ULA Period Tracker vs Flowna
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ULA Period Tracker
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Your cycle should not be a product. Keep it yours with ULA. ULA is the period tracker built on one non-negotiable principle: everything stays on your device. No servers. No cloud. Your data belongs only to you, no one, not even us, can see your information. You've seen what happens when others do. Most period tracking apps have become something else entirely, wellness platforms, advertising engines, data brokers dressed in pink. They offer horoscopes, social feeds, and premium subscriptions, while your most sensitive health information quietly becomes their most valuable asset. Some have faced the legal consequences. Their users faced worse. ULA is the opposite of all that. One thing, done right. ULA tracks your cycle. That's it. No social features. No ads. No upsells. No account required. Just an intelligent, private tool that learns your unique pattern, including considerations for irregularities like PCOS or PMS, and gives you predictions for your period, fertile windows, and ovulation. All on your iPhone. All offline. Track what actually matters: From bleeding intensity to ovulation pain, mood swings to fatigue, ULA gives you the depth to truly understand your body, without broadcasting it to anyone. Log symptoms, sexual activity, and cycle phases with precision. Edit past entries anytime. Your history is yours, no excuses. Nothing hidden. Nothing leaving your phone: ULA's prediction and business logic is open source. Audit it on GitHub. Verify the architecture yourself. We publish our math because we have nothing to hide and because you deserve to know exactly how your data is handled. Not a promise. Proof. ULA Period Tracker: Privacy. Period.
Flowna
This app helps you understand your menstrual cycle with intuitive tracking and personalized insights. It prioritizes your privacy by storing all data locally on your device, offering a secure and ad-free experience.
- Intuitive cycle dashboard
- Period and fertile window predictions
- Log flow, symptoms, mood, and medications
- Calendar heatmap and phase duration breakdowns
- Local data storage with no account needed
- Apple Health and Apple Watch integration
- Smart, customizable notifications
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Flowna is a beautifully designed period and cycle tracking app that puts your privacy first. All your data stays on your device — no accounts, no cloud uploads, no ads. Ever. KNOW YOUR CYCLE • See exactly where you are in your cycle with a clear, intuitive dashboard • Get predictions for your next period and fertile window • Track cycle day, phase, and days until your next period at a glance TRACK WHAT MATTERS • Log flow intensity, symptoms, mood, energy, and medications • Add notes with quick tags for doctor visits, milestones, and patterns • Record activities and track how they relate to your cycle • Optional time-of-day tracking for more detailed patterns INSIGHTS & HISTORY • View your full cycle history with visual comparisons • See phase duration breakdowns and symptom trends • Calendar heatmap shows your logging patterns over time • Export a doctor's report with your complete cycle data BEAUTIFUL & PERSONAL • Multiple color themes to match your style • Light and dark mode support • Animated, calming interface designed with care YOUR DATA, YOUR CONTROL • All data stored locally on your device — never uploaded • No account required — start tracking immediately • Export your data anytime as JSON or CSV • Import from other apps (JSON, CSV, Apple Health) • Optional Apple Health integration for cross-app sync • Biometric app lock (Face ID / Touch ID) for extra privacy APPLE WATCH COMPANION • See your current cycle phase and predictions on your wrist • Log flow and symptoms directly from Apple Watch • Automatic sync between iPhone and Watch SMART NOTIFICATIONS • Get reminders before your period is predicted to start • Fertile window alerts when relevant • Customizable daily log reminders • All notifications processed locally — no server push for health data IMPORTANT DISCLAIMER Flowna is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or condition. Predictions and insights are estimates based on calendar methods and should not be used as a contraceptive method or for medical decision-making. Always consult a qualified healthcare provider for medical advice.
Screenshots
Verdict
The clearest difference is in-app purchases: Flowna at none against ULA Period Tracker's 4. Flowna also leads on iOS requirement (15.1 vs 26.0). On price, update cadence, ads and device support 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. ULA Period Tracker sells 4 one-off in-app purchases. Flowna asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | ULA Period Tracker | Flowna |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, Apple Watch | iPhone, iPod, Apple Watch — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 10 MB | 50 MB |
| Age rating | 12+ | 12+ |
| Developer | Jeronimo Emiliano Ainchil Calahorra | Wafa Akbar |
In-app purchases
ULA Period Tracker
- Small Tip$0.99
- Medium Tip$2.99
- Large Tip$3.99
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- Huge Tip$8.99
Flowna
No in-app purchases









