Period Synced vs My Best Days
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Period Synced
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Train with your cycle, not against it. Period Synced is a workout interval timer that adapts your training intensity to where you are in your menstrual cycle. It's a precision gym timer first โ with phase-aware suggestions layered on top. If you've ever wondered why some weeks every set feels light and other weeks the same warm-up wrecks you, your hormones are part of the answer. Period Synced helps you read that signal and time your effort accordingly. WHAT YOU GET - A full-featured workout interval timer - HIIT, Tabata, EMOM, AMRAP, For Time, and fully custom interval sequences - Smooth circular timer with crisp audio cues and haptic feedback - Phase-aware intensity suggestions for every workout - Cycle visualization with a four-phase ring you can read at a glance - Curated workout library organized by cycle phase - Workout history with stats, streaks, and progress charts - Six languages, dark-mode friendly palette, clean modern interface TIMER MODES HIIT โ set work, rest, and rounds. Get a 3-2-1 countdown and bell on every interval change. Tabata โ classic 20 / 10 protocol, 8 rounds, ready in one tap. EMOM โ every minute on the minute, with a clear interval indicator. AMRAP โ as many rounds as possible, with a clean countdown. For Time โ count up, track your PR. Custom โ build any interval sequence you want, name each segment, save it. CYCLE PHASE INTELLIGENCE The four phases of the menstrual cycle each shift your energy, recovery, and strength capacity. Period Synced calculates your current phase from your last period start and suggests how to train: Menstrual โ lower intensity, mobility, gentle movement, recovery focus. Follicular โ energy rising. Strength building, progressive overload, new challenges. Ovulation โ peak performance window. Sprints, heavy lifts, personal records. Luteal โ winding down. Steady cardio, moderate strength, more recovery between sessions. These are guidance, not rules. Skip them, override them, or use them as a starting point โ the timer works on its own. WORKOUT LIBRARY Twelve curated templates organized by phase. Mobility flows for your menstrual phase. Strength builders for your follicular phase. HIIT peak-power sessions for your ovulatory window. Steady endurance for your luteal phase. Tap to load any template straight into the timer. INSIGHTS Track total workouts, active minutes, current streak, and most active phase. See your weekly activity chart and phase distribution. Build a picture of how you actually train across a full cycle. PRIVACY FIRST Your cycle data lives on your device. No account required. No sign-up. No third-party data sharing beyond what's required to deliver ads โ and you control that with a built-in consent center you can change any time. SIX LANGUAGES English, Spanish, French, Italian, German, Portuguese. WHO IT'S FOR People who lift, run, do HIIT, train for events, or just want a clean interval timer with one more layer of intelligence on top. If you menstruate and you train, this is built for you. If you don't, the timer still works beautifully โ the cycle layer is opt-in. IMPORTANT This app provides general fitness guidance, not medical advice. It is not a contraceptive aid and should not be used to predict fertility. Consult a qualified healthcare provider for medical questions about your cycle or training. Privacy Policy: https://silvervalleyprintco.com/privacy_policies.html Questions, suggestions, bug reports โ get in touch through the App Store contact link. We read everything.
My Best Days
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My Best Days is a calm, beautiful period and fertility tracker that helps you understand your cycle and find your best days. Log your period in a tap, see your history on a clear calendar, and get predictions for your next period that learn from your recent cycles. When you're trying to conceive, My Best Days estimates your fertile window and ovulation so you know your best days. Your data stays private. My Best Days is offline-first โ your cycle information is stored on your device and predictions are computed on-device. Optional sign-in lets you back up and sync across your devices. We never sell your data and never use your health data for advertising. WHAT'S INSIDE โข Period logging and a clear, colourful calendar โข Next-period predictions that learn from your cycles โข Fertile window and ovulation estimates โ find your best days โข Symptoms, mood, and daily notes โข Basal body temperature (BBT) and cervical mucus charting โข Pregnancy mode with a week-by-week view โข Cycle statistics and insights โข Period and fertility reminders โข Data export โข Optional account backup & sync across your devices Important: My Best Days is for informational and educational purposes only. It is not a contraceptive and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
Screenshots
Verdict
The clearest difference is ads: My Best Days at none against Period Synced's shown. Period Synced's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Period Synced | My Best Days |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Every 2 months |
| Ads | Yes | No โ better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 13.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 29 MB | 54 MB |
| Age rating | 4+ | 12+ |
| Developer | Ferran Espuna | Jayasekara M M T Jayasekara |
In-app purchases
Period Synced
No in-app purchases
My Best Days
No in-app purchases









