Comparison

Chime vs Period Synced

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Chime

Features
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Chime gets you from zero to training in seconds. Pick a mode, tap start, and move. Run Tabata, EMOM, AMRAP, or any HIIT-style workout with clear audio cues and haptic feedback that keep pace with you, even when your phone is locked. WORKOUT MODES Tabata The classic 20-on / 10-off format. Eight rounds. AMRAP (As Many Rounds As Possible) Set the clock and chase as many rounds as possible. EMOM (Every Minute On the Minute) Set your rounds and move on the minute, every minute. Custom Dial in your own rounds, work time, and rest time for circuits, conditioning blocks, or strength intervals. FEATURES โ€ข Configurable pre-session countdown โ€ข Large progress ring, readable at a glance โ€ข Audio and haptic cues with independent controls โ€ข Timer and cues keep running with your phone locked โ€ข Play, pause, skip, and rewind controls during any session โ€ข Dark mode support โ€ข No ads, no login, no account, no tracking

About

Period Synced

Features
Read full description

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.

Screenshots

Chime4 screens
Period Synced4 screens

Verdict

The call

The clearest difference is ads: Chime at none against Period Synced's shown. Period Synced's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17). On price and in-app purchases 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences ยท 3 level
Chime versus Period Synced: the parameters behind the verdict, then further details
ParameterChimePeriod Synced
PriceFreeFree
Update frequencyMonthlyโ€”
AdsNo โ€” betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, iPod โ€” better
Requires iOS1713.0 โ€” better
Further details โ€” not scored
Size7 MB29 MB
Age rating4+4+
DeveloperKunal ParmarFerran Espuna

In-app purchases

None

Chime

No in-app purchases

None

Period Synced

No in-app purchases

Questions

Is Chime free?
Chime is free to download, with no in-app purchases.
Is Period Synced free?
Period Synced is free to download, with no in-app purchases.
Do Chime or Period Synced have ads?
Period Synced shows ads; Chime does not.

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