Cycle KEEPER vs ZenFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cycle KEEPER
This app provides a customizable repetitive timer for activities like studying or yoga. It offers dual timer settings, multiple sound and visual alerts, and ensures your device stays on during sessions. It works in the foreground and can even alert you in silent mode.
- Dual timer settings up to 99min 99sec
- Multiple sound and flash screen alerts
- Vibration notifications
- Dark screen mode
- Works in silent mode
- Prevents device auto-lock
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A Sweet Sound Repetitive Double Timer You can use it like... - 4 set of “Concentration 25 min + Break 5 min” for repeat. - for Yoga, Stretch or Studying etc. features - 2 timer settings (max 99min 99sec + 99min 99sec) - basic 3 sounds and additional 5 sound - flash screen notice - vibration notice - dark screen mode recommendation - Earphones and speakers will make the sound much better notices - While counting, your iPhone will NEVER turns off automatically - It sounds even in silent mode - This app works only in the foreground - The accuracy of the time is NOT guaranteed screen explanation - 1st Time Count - 2nd Time & Loops Setting + sound / flash / vibration - 3rd Sound Select If you have any questions, please visit the support site
ZenFlow
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zenflow is a meditation timer for people who already sit. set a length. sit. one bell at the end. no course, no voice, nothing that nags — just the room to practice. — what zenflow is — a quiet instrument, not a program. you set the length; zenflow keeps the time and closes the sit with a single Tibetan singing bowl. a soft bell opens, one closes — and silence, or a gentle sound, in between. the screen stays awake while you sit, and the timer keeps true time even if you lock the phone. — for experienced meditators — made for zazen, vipassana and shamatha. no guidance, no lessons, no levels. five minutes or an hour and a half — if you already know how to sit, zenflow is the tool that stays out of your way. — what's inside — • a timer with a soft opening bell and one closing bell (Tibetan bowl) • sits from 5 minutes up to 90 • interval bells, only if you want them: one soft bell every few minutes • 9 ambient sounds: rain, ocean, forest, fireplace, wind, birds, thunder, white noise, creek — or silence. listen before you choose. • breathing: 4-7-8 and box, with a calm animation • a quiet record of your sits with gentle stats and a soft streak • an optional daily reminder, once a day, at a time you choose • dark mode, 7 languages, ensō and washi-paper design — honest about money — free: 5-, 10- and 15-minute sits, two sounds (rain + silence), 4-7-8 breath, and your record. premium (optional): longer sits up to 90 minutes, interval bells, all 9 sounds, box breathing, and a daily goal. monthly, or yearly with a 7-day free trial for new subscribers — cancel anytime. or pay once for lifetime premium. — what zenflow does not do — no ads. no guided courses, no voice-overs. no bells or reminders you didn't ask for. no guilt when you skip a day. — privacy, honestly — no account required to start: until you make one, your record stays on this device. an account is optional; with one, your record syncs to your own private account on servers in the EU. nothing is sold or shared with advertisers. for stability we collect only anonymous crash and usage diagnostics. sit whenever you like. zenflow waits quietly. — terms — terms of use (EULA): https://www.zenflow.day/terms privacy policy: https://www.zenflow.day/privacy
Screenshots
Verdict
The clearest difference is iOS requirement: Cycle KEEPER at 13.0 against ZenFlow's 15.1. On price, update cadence, ads and in-app purchases 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. Cycle KEEPER sells 2 one-off in-app purchases and ZenFlow sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Cycle KEEPER ships an update monthly, ZenFlow every 3 weeks. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.
| Parameter | Cycle KEEPER | ZenFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 10 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | MITSURU OMURA | DJUMP, MB |
In-app purchases
Cycle KEEPER
- Sound Set-A Usage$0.99
- Sound Set-B Usage$0.99
ZenFlow
- ZenFlow Premium Monthly$3.991 Month
- ZenFlow Premium Yearly$23.991 Year









