ULA Period Tracker vs Flow State Cycle
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.
Flow State Cycle
This private period tracker logs your cycle with a single tap and uses your data for smart predictions. It offers symptom and mood tracking, cycle insights, and doctor-ready reports. Your health data stays on your device, ensuring complete privacy.
- Smart cycle predictions
- Symptom and mood logging
- Cycle insights and patterns
- Doctor-ready PDF reports
- Health ecosystem sync
- CSV data export
- Dark mode support
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Flow State is a private, local-first period tracker that keeps your health data on your device — no account required, no cloud, no tracking. Log your period with a single tap. Flow State learns your unique cycle and predicts your next period using your own data, not assumptions. FEATURES • Smart predictions — weighted rolling average based on your cycle history, not a generic 28-day guess • Symptom and mood tracking — log cramps, headache, fatigue, mood changes, and more • Cycle insights — flow intensity patterns, symptom frequency, mood distribution, and correlations • Doctor-ready PDF report — share a clean summary with your healthcare provider • Apple Health and Google Health Connect sync — read and write menstrual data across your health ecosystem • Curated essentials — helpful products for each phase of your cycle • Dark mode — full light, dark, and system theme support • CSV export — download your complete cycle history anytime PRIVACY FIRST Your data never leaves your device. No account, no servers, no analytics, no ads. Period.
Screenshots
Verdict
The clearest difference is in-app purchases: Flow State Cycle at none against ULA Period Tracker's 4. Flow State Cycle also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (15.1 vs 26.0). On price, 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. Flow State Cycle asks for nothing beyond the download.
ULA Period Tracker ships an update every 3 months, Flow State Cycle every 3 weeks. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.
| Parameter | ULA Period Tracker | Flow State Cycle |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 10 MB | 33 MB |
| Age rating | 12+ | 4+ |
| Developer | Jeronimo Emiliano Ainchil Calahorra | Brett East |
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
Flow State Cycle
No in-app purchases
Questions
Is ULA Period Tracker free?
Is Flow State Cycle free?
Do ULA Period Tracker or Flow State Cycle have ads?
Which is updated more often, ULA Period Tracker or Flow State Cycle?
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