Period Tracker vs Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Period Tracker
This app offers a private and secure way to track your menstrual cycle, ovulation, and symptoms. It features a chronological timeline for easy pattern identification and a minimalist design. Premium features include advanced charts and HealthKit integration.
- Privacy-first local data storage
- Chronological symptom timeline
- Native minimalist design
- Cycle history charts
- HealthKit integration
- Medical PDF exports
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Aura is the premium, privacy-first period and cycle tracking app designed exclusively for iOS. We believe your health data is yours alone. That is why Aura operates entirely on your device with zero third-party servers, zero data selling, and zero ads. 100% Private & Secure Your cycle history, symptoms, and health notes are stored in a local, encrypted database directly on your iPhone. Aura seamlessly and securely syncs across your devices using your private Apple iCloud. We cannot see, access, or share your data. Chronological Symptom Timeline Read your day as a timeline. Aura features a strictly chronological sort for your daily logs, moving sequentially from morning to evening. This makes it effortless to visually identify personal symptom patterns and daily fluctuations over your cycle. Native & Minimalist Design Built to feel like a native Apple application, Aura utilizes a minimalist, high-contrast geometric design that is calm, clinical, and free from cluttered stereotypes. Navigating your calendar provides satisfying, high-quality tactile haptics. Premium Features (Aura Premium) While core logging and predictions are forever free, Aura Premium unlocks advanced, deterministic insights: Native Charts: Visualize your 12-month cycle history and Basal Body Temperature (BBT) curve with blazing-fast, beautiful graphs. Deep HealthKit Integration: Automatically sync nighttime wrist temperature data from your Apple Watch and push your logged periods directly to Apple Health. Medical Exports: Generate high-quality, formatted PDF reports of your 6-month cycle history to share directly with your healthcare provider. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Flow
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FlowSync is your intelligent period and cycle tracking companion. With a beautiful, intuitive calendar interface, FlowSync helps you understand your body's natural rhythms. KEY FEATURES: • Smart Calendar — Visual cycle tracking with color-coded days for period, fertile window, and ovulation • Period Predictions — AI-powered cycle predictions based on your history • Symptom Tracking — Log mood, energy, cramps, and other symptoms daily • Today View — At-a-glance dashboard showing cycle day, phase, and upcoming events • Cycle Insights — Understand your patterns with detailed cycle analysis • Beautiful Design — Clean, modern interface that's a joy to use FlowSync is designed for informational and general wellness purposes only. It is not intended to be used for contraception, medical advice, diagnosis, or treatment. Always consult your healthcare provider for medical concerns.
Screenshots
Verdict
The clearest difference is in-app purchases: Flow at none against Period Tracker's 3. Flow also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Period Tracker sells 3 in-app purchases, starting at $2.99 per month. Flow asks for nothing beyond the download.
Period Tracker ships an update every 2 months, Flow every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | Period Tracker | Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18 | 17.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | Parag Bafna | 拥军 刘 |
In-app purchases
Period Tracker
- Aura Premium (Monthly)$2.991 Month
- Aura Premium (Yearly)$19.991 Year
- Aura Premium (Lifetime)$49.99
Flow
No in-app purchases









