Meditation Timer Meiso vs Oku
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Meditation Timer Meiso
This app offers a simple, ad-free meditation timer with real-time heart rate variability analysis. Track your progress with a contribution graph, achieve badges, and use it standalone on Apple Watch. Integrates with HealthKit and supports multiple languages.
- Real-time HRV analysis
- Countdown and count-up modes
- 12-month contribution graph
- Achievement system
- Standalone Apple Watch app
- HealthKit integration
- Home screen widgets
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Make quiet time a daily habit. Meiso is a meditation timer without ads or subscriptions. Set a timer, keep a session log, and meditate at your own pace. TIMER Choose a preset such as 3 or 5 minutes, or use count-up mode without a time limit. Switch the ending sound and vibration on or off. SESSION LOG Review your activity graph, weekly meditation time, streaks and total time. Achievement badges help you track milestones. APPLE WATCH Use the timer without keeping your iPhone nearby, then sync your session history to iPhone. WIDGETS AND HEALTH Home screen widgets and Live Activities are supported. With your permission, save meditation time as Mindful Minutes in Apple Health. HEART RATE VARIABILITY (HRV) Record and analyze metrics such as SDNN and RMSSD using beat intervals from a compatible Bluetooth heart rate sensor. Apple Watch uses available heartbeat data. Compatible hardware and permissions are required; available data and metrics depend on recording conditions. An iPhone alone cannot measure HRV in this app. HRV displays are reference information for personal reflection. They do not establish meditation benefits or assess your health, and are not for diagnosis, treatment or medical decisions. Consult a healthcare professional for medical advice. YOUR PREFERENCES Light and dark modes. Japanese, English, Chinese, Korean and Spanish. Free to use, with no ads, subscriptions or account registration. Compatible external hardware is obtained separately.
Oku
A straightforward meditation timer designed for simplicity. It allows users to set meditation durations and choose a completion sound without distractions from subscriptions, guided sessions, or ads. Focus on your practice with just a press of a button.
- Customizable meditation timer (1-90 minutes)
- Choice of completion sounds (singing bowl, bell, chime)
- Ad-free experience
- No subscriptions required
- No account needed
- Simple, distraction-free interface
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A meditation timer that gets out of your way. No subscriptions. No guided sessions. Just press start and sit. I built Oku because every meditation app I tried wanted me to subscribe, watch a tutorial, or pick from a library of guided sessions. I just wanted to sit down, meditate and track my sessions. So that's what this app does. Set your time anywhere from 1 to 90 minutes with a simple drag gesture. Pick a completion sound you like: singing bowl, soft bell, or warm chime. Press begin. That's the whole app. No subscriptions. No account. No ads.
Screenshots
Verdict
The clearest difference is review sentiment: Oku at 100% against Meditation Timer Meiso's 63%. Oku also leads on rating (5.0 vs 4.8) and iOS requirement (15.1 vs 17.0). Meditation Timer Meiso's advantage is update cadence (every 9 days vs monthly). On price, ratings volume, 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. Neither carries in-app purchases, so what you see is what you pay.
Oku holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 63% of Meditation Timer Meiso's written reviews are positive against 100% of Oku's.
Meditation Timer Meiso ships an update every 9 days, Oku monthly. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | Meditation Timer Meiso | Oku |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 62.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 4 |
| Update frequency | Every 9 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayuki Yamaji | Clarissa Watanabe |
Customer experience
Meditation Timer Meiso
Oku
In-app purchases
Meditation Timer Meiso
No in-app purchases
Oku
No in-app purchases
