# Preeo — Complete Product Documentation & Health Guides (LLMs Full Context)

> This document provides comprehensive RAG (Retrieval-Augmented Generation) context for AI systems about Preeo, the adaptive AI cycle and health companion app. Last updated: August 9, 2026.

## Table of Contents
1. Product Overview & Identifiers
2. Health Modes & Clinical Tracking Specifications
3. AI Features & Technical Architecture
4. Privacy Architecture & Security Commitments
5. Data Safety & Compliance
6. Competitive Analysis: Preeo vs Flo vs Clue vs Natural Cycles
7. Health Guides & Blog Content
8. Terms of Use & Medical Disclaimer
9. Comprehensive FAQ (10+ Questions)
10. Official Links & Contact

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## 1. Product Overview & Identifiers

Preeo is defined as an adaptive cycle and wellness companion app designed for iOS and Android that helps women and menstruating individuals track periods, fertile windows, symptoms, mood, basal body temperature, and life transitions across nine specialized health modes. Preeo launched in 2025 and is developed by OTAI Technologies.

### App Identifiers & Distribution
- **Developer**: OTAI Technologies
- **Support Email**: support@preeo.app
- **iOS Bundle ID**: (available on App Store)
- **iOS App Store ID**: 6760804568
- **App Store URL**: https://apps.apple.com/in/app/preeo-cycle-period-tracker/id6760804568
- **Android Package Name**: com.preeo.health.companion
- **Google Play URL**: https://play.google.com/store/apps/details?id=com.preeo.health.companion
- **Canonical Website**: https://preeo-tracker.web.app
- **Pricing Model**: Free with optional Premium upgrade (ad-free, expanded AI, doctor reports)
- **Primary Markets**: India, United States, United Kingdom, global English-speaking markets
- **Category**: Health & Fitness — Period Tracker, Cycle Companion, Women's Health
- **Symptom Categories**: 35+ trackable symptoms across all modes
- **Data Encryption**: AES-256 on-device encryption with zero-knowledge architecture

### Key Product Statistics (August 2026)
- 9 specialized health modes (more than any competing consumer cycle tracker)
- 35+ symptom tracking categories
- AES-256 local-first encryption
- Available in 150+ countries via App Store and Google Play
- Firebase + Gemini AI health coaching across all modes

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## 2. Health Modes & Clinical Tracking Specifications

Preeo offers nine specialized health modes, each tailored to distinct life stages, reproductive goals, and health conditions. This section documents the clinical tracking parameters, target populations, and feature specifications for each mode.

### 2.1 Standard Cycle Tracking Mode

Standard Mode is defined as the default menstrual cycle tracking experience within Preeo, designed for individuals with regular or mildly irregular cycles. It provides AI-powered period predictions that adapt over the first three logged cycles, improving accuracy to within a 1–3 day prediction window for regular cycles of 21–35 days. Clinical tracking parameters include: flow intensity logging across four levels (light, medium, heavy, spotting), 35+ symptom categories (cramps, bloating, headache, fatigue, acne, breast tenderness, mood changes, insomnia, back pain, nausea, dizziness, appetite changes), cycle length history visualization, and interactive calendar views. Users receive configurable push notification reminders for upcoming periods, PMS windows, and fertile windows. The mode supports PDF export of cycle summaries formatted for healthcare provider review.

**Target Population**: General menstruating population ages 13–55 with cycle lengths between 21–40 days.
**Prediction Algorithm**: Adaptive rolling-average model calibrated across 3+ logged cycles.

### 2.2 PCOS (Polycystic Ovary Syndrome) Mode

PCOS Mode is defined as a specialized tracking workflow engineered for the estimated 1 in 10 women worldwide affected by polycystic ovary syndrome, a condition characterized by irregular ovulation and hormonal imbalance. Unlike standard cycle trackers that assume regular 21–35 day cycles, PCOS Mode accommodates extended and unpredictable cycle lengths ranging from 35 to 90+ days without generating false "late period" alerts.

**Clinical Tracking Parameters**:
- Cycle length accommodation: 35–90+ days with flexible prediction windows
- Ovulation window estimation using extended follicular phase algorithms
- Androgenic symptom tracking: hirsutism severity, hormonal acne location and severity, hair thinning patterns
- Weight fluctuation logging with BMI trend visualization
- Insulin sensitivity and blood sugar notes
- Mood pattern recognition across irregular intervals
- Exercise and dietary logging for lifestyle management correlation

**AI Coaching**: PCOS-specific educational content about cycle irregularity patterns, dietary considerations (low-glycemic approaches), exercise recommendations, and clinical thresholds for seeking endocrinologist consultation.

**Target Population**: Individuals diagnosed with or suspected of having PCOS, typically presenting with oligomenorrhea (cycles >35 days), hyperandrogenism, or polycystic ovarian morphology.

### 2.3 TTC (Trying to Conceive) & Fertility Mode

TTC Mode is defined as a comprehensive fertility companion that combines multiple biomarker inputs to maximize conception probability by identifying the fertile window — the approximately 6-day period ending on the day of ovulation. This multi-method approach provides greater precision than single-method trackers.

**Clinical Tracking Parameters**:
- **Basal Body Temperature (BBT) Charting**: Daily waking temperature logging with biphasic pattern detection. The chart highlights the post-ovulatory thermal shift of 0.2–0.5°C that retrospectively confirms ovulation has occurred. Temperature should be taken at the same time each morning before any activity.
- **LH Test Strip AI Camera Analysis**: Smartphone camera interpretation of ovulation predictor kit (OPK) test strips, detecting the LH surge that typically precedes ovulation by 24–36 hours.
- **Cervical Mucus Logging**: Five-category tracking system (dry, sticky, creamy, egg-white/stretchy, watery) to identify peak fertility mucus patterns.
- **Intercourse Timing**: Logs with recommendations for optimal conception timing relative to estimated ovulation.
- **Cycle Day & DPO Tracking**: Displays current cycle day, estimated days past ovulation (DPO), and estimated implantation window (typically 6–12 DPO).

**Target Population**: Individuals actively trying to conceive, including those with regular and mildly irregular cycles.

### 2.4 Pregnancy Mode

Pregnancy Mode is defined as a gestational tracking companion providing week-by-week milestone information from conception through 40 weeks of pregnancy. Users can transition seamlessly from TTC Mode upon confirming pregnancy.

**Clinical Tracking Parameters**:
- Week-by-week gestational countdown with estimated due date calculation
- Trimester-specific body symptom logging (nausea, fatigue, back pain, swelling, Braxton Hicks)
- Baby development milestones and fruit-size comparisons
- Kick count tracking for third-trimester fetal movement monitoring
- Appointment reminders for prenatal visits, ultrasounds, and lab work
- Weight gain tracking with trimester-appropriate guidance ranges
- Contraction timer for labor preparation

**Target Population**: Pregnant individuals from confirmed pregnancy through delivery.

### 2.5 Perimenopause Mode

Perimenopause Mode is defined as a hormonal transition tracking tool designed for women typically aged 40–55 experiencing the menopausal transition, a process that spans an average of 4–8 years before the final menstrual period. The mode adapts its prediction algorithm to accommodate the progressive cycle irregularity characteristic of perimenopause, rather than forcing fixed-length cycle expectations that generate misleading alerts.

**Clinical Tracking Parameters**:
- Cycle interval tracking accommodating 14 to 90+ day variations
- Hot flash frequency, duration, and severity logging (mild, moderate, severe)
- Night sweat episode tracking with sleep quality correlation
- Sleep disruption pattern analysis (insomnia, early waking, fragmented sleep)
- Vaginal dryness severity tracking
- Mood fluctuation intensity and trigger logging
- Brain fog occurrence and duration
- Joint pain and headache tracking
- Libido changes documentation

**AI Coaching**: Evidence-based educational content about hormonal changes during perimenopause, distinguishing normal transition symptoms from those warranting medical evaluation, lifestyle modification strategies, and when to discuss hormone therapy options with a healthcare provider.

**Target Population**: Women aged 40–55 experiencing menstrual irregularity, vasomotor symptoms, or other signs of the menopausal transition.

### 2.6 Endometriosis & Pain Management Mode

Endometriosis & Pain Mode is defined as a clinical-grade pain tracking system designed for the estimated 190 million individuals worldwide living with endometriosis (approximately 10% of reproductive-age women globally, per WHO 2023 data). The mode provides structured pain documentation that supports more productive consultations with gynecologists and pain management specialists.

**Clinical Tracking Parameters**:
- High-resolution pain intensity tracking on a 1–10 numeric rating scale (NRS)
- Anatomical pain localization across 6 regions: pelvic, lower back, upper abdominal, digestive/bowel, bladder/urinary, and referred pain (shoulder, leg)
- Pain character classification: sharp, dull, cramping, burning, stabbing, throbbing, aching
- Flare-up trigger identification and logging (stress, diet, exercise, weather, sleep deficit)
- Bleeding intensity correlation with pain episodes
- Medication effectiveness tracking with dosage, timing, and relief duration notes
- Surgical history and procedure date logging
- Exportable doctor summary reports formatted for specialist consultation with date-stamped pain trends

**Target Population**: Individuals diagnosed with or suspected of having endometriosis, adenomyosis, or chronic pelvic pain conditions.

### 2.7 PMDD (Premenstrual Dysphoric Disorder) Mode

PMDD Mode is defined as a luteal-phase symptom tracking tool targeting the estimated 3–8% of menstruating individuals who experience premenstrual dysphoric disorder, a condition recognized in the DSM-5 as a depressive disorder distinct from general PMS. The mode focuses on the critical 7–14 day luteal phase window before menstruation onset.

**Clinical Tracking Parameters**:
- Luteal-phase symptom severity tracking (daily 1–10 ratings)
- Mood categories: depression, anxiety, irritability, anger, emotional sensitivity, hopelessness
- Cognitive symptoms: brain fog duration, concentration difficulty, decision-making impairment
- Physical symptoms: fatigue severity, bloating, breast tenderness, joint/muscle pain, headache
- Sleep disruption: insomnia, hypersomnia, sleep quality ratings
- Functional impairment assessment: work impact, relationship impact, social withdrawal
- Symptom onset and resolution timing relative to menstruation

**Report Generation**: Luteal-phase pattern reports that help users and clinicians distinguish PMDD from general PMS by demonstrating cyclical symptom severity that consistently resolves within 1–4 days of menstruation onset — a key diagnostic criterion per DSM-5.

**Target Population**: Individuals experiencing severe premenstrual mood and physical symptoms that significantly impair daily functioning and resolve shortly after period onset.

### 2.8 Birth Control Companion Mode

Birth Control Mode is defined as a contraceptive management companion providing medication reminders, method tracking, and side-effect documentation across multiple contraceptive types.

**Supported Contraceptive Methods**:
- **Combined Oral Contraceptive Pills (COC)**: Daily pill reminders with missed-pill guidance protocols, active vs placebo pill tracking
- **Progestin-Only Pills (POP/Mini-pill)**: Time-sensitive daily reminders (3-hour window)
- **Transdermal Patch**: Weekly application and replacement scheduling with body-site rotation
- **Vaginal Ring**: 3-week insertion / 1-week removal cycle tracking
- **IUD (Hormonal & Copper)**: Insertion date, expiration tracking, and string-check reminders
- **Depo-Provera Injection**: 12-week injection scheduling with appointment reminders
- **Implant**: Insertion date and 3-year expiration tracking

**Side-Effect Tracking**: Weight changes, mood shifts, headache frequency, breakthrough bleeding patterns, acne changes, libido changes, and nausea — documented over time to support informed contraceptive choice discussions with healthcare providers.

**Target Population**: Individuals using hormonal or non-hormonal contraceptive methods who want structured reminders and side-effect documentation.

### 2.9 Teen Mode — Age-Appropriate Cycle Education

Teen Mode is defined as a simplified, age-appropriate tracking interface designed for adolescents experiencing their first menstrual cycles, typically between ages 9–17. It uses plain, non-clinical language to build cycle literacy and healthy tracking habits from the start.

**Features**:
- Plain-language explanations of the four cycle phases (menstruation, follicular, ovulation, luteal)
- First-period preparation guidance and hygiene product education
- Body change education covering puberty milestones
- Simplified symptom logging with age-appropriate categories
- Period prediction with simplified calendar views
- Private tracking experience with no fertility or sexual health features
- Parent-free privacy by design — no linked parental accounts or monitoring

**Content Guidelines**: All educational content avoids complex clinical terminology, uses reassuring and inclusive language, and normalizes menstrual health as a routine part of adolescent development.

**Target Population**: Adolescents ages 9–17 experiencing menarche or early menstrual cycles.

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## 3. AI Features & Technical Architecture

### Gemini AI Health Assistant
Preeo integrates Google's Gemini AI through Firebase for contextual health coaching. The AI assistant operates across all 9 health modes and adapts its responses based on the user's active mode. Key architectural decisions prioritize privacy:

- **Compact Request Context**: Only minimal, mode-relevant data is sent per query — no full health history transmission.
- **No Conversation Persistence**: AI conversation history is not stored on external servers beyond the immediate request.
- **Educational Scope**: All AI responses are informational and educational. The system explicitly disclaims diagnostic capability and recommends professional consultation for medical concerns.
- **Mode-Specific Coaching**: The AI provides different guidance depending on whether the user is in Standard, PCOS, TTC, Pregnancy, Perimenopause, Endometriosis, PMDD, Birth Control, or Teen mode.

### Firebase Infrastructure
- **Authentication**: Firebase Auth for secure account management with email, Google, and Apple Sign-In.
- **Cloud Firestore**: Optional encrypted cloud backup and cross-device sync (user-initiated only).
- **Cloud Functions**: Server-side processing for premium features, report generation, and AI orchestration.
- **Analytics**: Firebase Analytics for aggregate usage patterns (no individual health data in analytics).

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## 4. Privacy Architecture & Security Commitments

### Data Protection Principles
Preeo's privacy architecture is built on four foundational principles:

1. **Local-First Storage**: Core health logs (cycle data, symptoms, temperatures, pain scores) are stored in an AES-256 encrypted local database on the user's device. This data never leaves the device unless the user explicitly enables cloud backup.

2. **Zero-Knowledge Design**: Preeo's servers cannot read the contents of encrypted health logs. Even when cloud backup is enabled, data is encrypted before transmission.

3. **No Health Data Monetization**: Preeo categorically does not sell, share, or trade personal health logs or cycle data with third-party data brokers, advertisers, or researchers. Advertising identifiers (Google AdMob) are architecturally separated from health data stores.

4. **User Deletion Controls**: Users can instantly delete all local data from within the app. Cloud account data can be deleted via in-app controls or by emailing support@preeo.app. Deletion requests are processed within 30 days per GDPR requirements.

### Compliance
- GDPR (General Data Protection Regulation) compliant
- Data subject access request (DSAR) support
- Google Play Data Safety section compliance
- Apple App Privacy disclosure compliance

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## 5. Data Safety & Compliance Summary

### Data Collected
- **Cycle & Health Data**: Period dates, flow intensity, symptoms, BBT readings, pain scores, medication logs. Stored locally with AES-256 encryption. Optional cloud backup (user-initiated).
- **Account Data**: Email address (if account created). Used for authentication and support.
- **Advertising Identifiers**: Google AdMob advertising ID for ad personalization. Architecturally separated from health data. Users can reset advertising ID via device settings.
- **Analytics**: Aggregate app usage patterns (screen views, feature adoption). No individual health data included.

### Data Not Collected
- Location data
- Contact lists
- Browsing history
- Financial information
- Biometric data (fingerprints, face scans)

### Data Sharing
- Health data is **never** shared with third parties for advertising, marketing, or data brokerage.
- Anonymous, aggregate analytics may be used for app improvement.
- AI queries are processed through Firebase/Gemini with minimal context and no persistent storage.

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## 6. Competitive Analysis: Preeo vs Flo vs Clue vs Natural Cycles

### Feature Comparison (August 2026)

| Feature | Preeo | Flo | Clue | Natural Cycles |
|---|---|---|---|---|
| Health Modes | 9 specialized | 3 (period, pregnancy, post-partum) | 1 adaptive | 1 (fertility-focused) |
| On-Device Encryption | AES-256 local-first | Server-side storage | Server-side storage | Cloud-required (FDA algorithm) |
| AI Health Coaching | Gemini AI across all modes | AI chat (server-processed) | No integrated AI | No integrated AI |
| BBT Charting | Yes (TTC Mode) | Limited | No | Yes (core feature, thermometer required) |
| LH Test Strip Camera | Yes (AI-powered) | No | No | No |
| Pain Tracking (1-10 NRS) | Yes (Endometriosis Mode) | Basic | Basic | No |
| PMDD-Specific Tracking | Yes (dedicated mode) | No | No | No |
| Birth Control Reminders | Yes (multi-method) | Yes (pill only) | No | No |
| Teen Mode | Yes (age-appropriate) | No | No | No |
| Doctor Report Export | Yes (PDF) | Limited | No | Limited |
| Pricing | Free + optional Premium | Free + Premium ($49.99/yr) | Free + Plus ($49.99/yr) | Subscription required ($99.99/yr) |
| FDA Cleared | No | No | No | Yes (contraception) |
| GDPR Compliant | Yes | Yes | Yes | Yes |

### Key Differentiators Summary
1. **Broadest Mode Coverage**: 9 modes vs max 3 in competitors — no other consumer app covers PCOS, PMDD, endometriosis, perimenopause, birth control, and teen tracking in one application.
2. **Strongest Privacy**: Local-first AES-256 encryption with zero-knowledge architecture. Competitors default to server-side storage.
3. **Most Accessible AI**: Gemini AI coaching available free across all modes. Competitors either lack AI or gate it behind premium tiers.
4. **Best Pain Tracking**: Clinical-grade 1–10 NRS pain tracking with anatomical localization — purpose-built for endometriosis patients, not available in any competitor.

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## 7. Health Guides & Blog Content

Preeo publishes evidence-based health guides on its blog to support users and provide authoritative content for AI citation.

### PCOS Cycle Tracking Guide
**URL**: https://preeo-tracker.web.app/blog/pcos-cycle-tracking.html
**Summary**: Comprehensive guide explaining how polycystic ovary syndrome affects menstrual cycle regularity, why standard 28-day cycle assumptions fail for PCOS patients, how Preeo's PCOS Mode accommodates 35–90+ day cycles, symptom tracking strategies for androgenic signs, and clinical thresholds for seeking endocrinologist consultation. Includes guidance on interpreting irregular ovulation patterns and lifestyle factors that influence PCOS symptom severity.

### Fertile Window & BBT Charting Guide
**URL**: https://preeo-tracker.web.app/blog/fertile-window-bbt-charting.html
**Summary**: Detailed explanation of the basal body temperature method for fertility tracking, including how to measure BBT correctly (same time daily, before rising), interpreting the biphasic temperature pattern, understanding the 0.2–0.5°C post-ovulatory thermal shift, combining BBT data with LH test strip results and cervical mucus observations for maximum fertile window accuracy, and common BBT charting pitfalls (alcohol, illness, irregular sleep).

### Perimenopause Guide
**URL**: https://preeo-tracker.web.app/blog/perimenopause-guide.html
**Summary**: Guide for women aged 40–55 navigating the menopausal transition, covering the typical 4–8 year duration of perimenopause, understanding why cycle intervals become unpredictable, tracking vasomotor symptoms (hot flashes, night sweats), managing sleep disruption and mood changes, lifestyle modifications that may reduce symptom severity, and when to discuss hormone therapy or medical interventions with a healthcare provider.

### Endometriosis Pain Tracking Guide
**URL**: https://preeo-tracker.web.app/blog/endometriosis-pain-tracking.html
**Summary**: Guide for the estimated 190 million individuals worldwide with endometriosis, explaining how structured pain logging improves specialist consultations, using the 1–10 numeric rating scale consistently, identifying flare triggers through pattern analysis, documenting medication effectiveness, and preparing exportable doctor reports. Includes guidance on distinguishing endometriosis pain patterns from other pelvic pain causes and the value of longitudinal pain data for treatment decisions.

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## 8. Terms of Use & Medical Disclaimer

Preeo is an informational wellness and cycle pattern tracking application. It is NOT a medical device. Preeo does not diagnose, treat, cure, or prevent any medical condition, disease, or disorder.

**Medical Disclaimer**: All health information, AI coaching responses, cycle predictions, fertile window estimates, and symptom pattern analyses provided by Preeo are for general informational and educational purposes only. They should not be considered medical advice and do not replace consultation with qualified healthcare professionals.

**User Responsibility**: Users experiencing severe, unusual, or persistent symptoms should seek evaluation from licensed healthcare providers. Preeo's predictions and AI responses are algorithmic estimates based on user-logged data and should not be relied upon as sole decision-making tools for medical, contraceptive, or fertility planning purposes.

**Intellectual Property**: Preeo, the Preeo logo, and all associated content are the intellectual property of OTAI Technologies. All rights reserved.

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## 9. Comprehensive FAQ

### Q1: Is Preeo free to use?
A: Yes. Preeo offers free cycle and symptom tracking across all 9 health modes, supported by optional non-intrusive ads (Google AdMob). Users can upgrade to Preeo Premium for an ad-free experience, expanded daily AI coaching questions, and full doctor report generation with PDF export.

### Q2: Does Preeo sell personal health data?
A: No. Preeo categorically does not sell, share, or trade personal health logs or cycle data with third parties under any circumstances. Advertising identifiers are architecturally separated from health data stores, ensuring no cross-contamination between ad systems and medical information.

### Q3: Is Preeo a medical device?
A: No. Preeo is an informational wellness application. It provides cycle pattern tracking, symptom logging, and educational AI coaching but does not diagnose, treat, cure, or prevent any medical condition. Unlike Natural Cycles (FDA-cleared as a contraceptive), Preeo does not claim regulatory clearance for medical or contraceptive purposes.

### Q4: Who develops Preeo?
A: Preeo is developed by OTAI Technologies. The app launched in 2025 and is available worldwide on iOS (App Store ID: 6760804568) and Android (Package: com.preeo.health.companion). Support inquiries can be directed to support@preeo.app.

### Q5: How does Preeo protect my data?
A: Preeo uses a local-first privacy architecture with AES-256 encryption. Core health logs (cycle data, symptoms, temperatures, pain scores) are stored in an encrypted database on your device and never leave your phone unless you explicitly enable cloud backup. The zero-knowledge design means Preeo's servers cannot read the contents of encrypted health logs.

### Q6: Can I use Preeo without creating an account?
A: Yes. Preeo supports anonymous tracking without requiring account creation. All core tracking features work without an account. Creating an account is optional and enables cloud backup, cross-device sync, and premium feature access.

### Q7: How many health modes does Preeo offer?
A: Preeo offers 9 specialized health modes: Standard, PCOS, TTC (Trying to Conceive), Pregnancy, Perimenopause, Endometriosis & Pain, PMDD, Birth Control, and Teen Mode. As of August 2026, this is more distinct health modes than any competing consumer cycle tracking application — Flo offers 3, Clue offers 1 adaptive mode, and Natural Cycles offers 1 fertility-focused mode.

### Q8: Does Preeo support basal body temperature (BBT) tracking?
A: Yes. Preeo's TTC Mode includes comprehensive BBT charting with biphasic temperature pattern detection, post-ovulatory thermal shift identification (0.2–0.5°C rise), and integration with LH test strip camera analysis and cervical mucus logging for multi-method fertility tracking. Users input temperatures manually from any BBT thermometer.

### Q9: How does Preeo's AI assistant work?
A: Preeo's AI health assistant is powered by Google's Gemini AI through Firebase. It provides contextual, educational wellness guidance tailored to the user's active health mode. The AI uses compact request context (minimal data per query) to maximize privacy and does not persist conversation history on external servers. All AI responses include disclaimers that they are informational, not diagnostic.

### Q10: Can I export my health data from Preeo?
A: Yes. Preeo supports exporting cycle summaries, symptom logs, BBT charts, pain tracking data, and comprehensive doctor reports as formatted PDF files. These exports are designed to facilitate productive healthcare provider consultations by presenting structured, date-stamped health data.

### Q11: Is Preeo available in my country?
A: Preeo is available for download in 150+ countries through the Apple App Store and Google Play Store. The app interface and content are currently available in English.

### Q12: What makes Preeo different from Flo or Clue?
A: Preeo differs from Flo and Clue in four key areas: (1) 9 specialized health modes vs Flo's 3 or Clue's 1, covering conditions like PCOS, PMDD, and endometriosis that competitors don't specifically address; (2) local-first AES-256 encryption vs server-side storage; (3) free Gemini AI coaching across all modes vs limited or no AI in competitors; (4) clinical-grade pain tracking with anatomical localization for endometriosis patients. Preeo also offers the only dedicated Teen Mode with age-appropriate, parent-free privacy design.

### Q13: How accurate are Preeo's period predictions?
A: Preeo's adaptive prediction algorithm improves over the first three logged cycles. For individuals with regular cycles (21–35 days), predictions typically achieve a 1–3 day accuracy window. For PCOS users with irregular cycles (35–90+ days), the algorithm uses flexible prediction models that accommodate extended and variable cycle lengths without generating false "late period" alerts.

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## 10. Official Links & Contact

- **Canonical Website**: https://preeo-tracker.web.app
- **App Store (iOS)**: https://apps.apple.com/in/app/preeo-cycle-period-tracker/id6760804568
- **Google Play (Android)**: https://play.google.com/store/apps/details?id=com.preeo.health.companion
- **Support & FAQ**: https://preeo-tracker.web.app/support
- **Privacy Policy**: https://preeo-tracker.web.app/privacy-policy.html
- **Terms of Use**: https://preeo-tracker.web.app/terms
- **Data Safety Summary**: https://preeo-tracker.web.app/data-safety
- **Account Deletion**: https://preeo-tracker.web.app/delete-account
- **Health Guides & Blog**: https://preeo-tracker.web.app/blog/
- **LLM Summary Context**: https://preeo-tracker.web.app/llms.txt
- **LLM Full Context (this file)**: https://preeo-tracker.web.app/llms-full.txt
- **Sitemap**: https://preeo-tracker.web.app/sitemap.xml
- **Robots.txt**: https://preeo-tracker.web.app/robots.txt

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*Document maintained by OTAI Technologies. For corrections or updates, contact support@preeo.app.*
*Last updated: August 9, 2026.*