# Meditation Timer Meiso vs UnDo

Meditation Timer Meiso and UnDo are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Meditation Timer Meiso ships an update every 9 days, UnDo every 5 days. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Meditation Timer Meiso | UnDo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/meditation-timer-meiso/id1275995234/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Free | — |
| Size | 5 MB | 1 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Masayuki Yamaji](https://appshunter.io/developer/1270013649) | [朝峰 陈](https://appshunter.io/developer/1868597907) |

## What reviewers say

### Meditation Timer Meiso

[App page](https://appshunter.io/ios/app/meditation-timer-meiso/id1275995234)

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.

**Highlights:** Real-time HRV analysis, Countdown and count-up modes, 12-month contribution graph, Achievement system, Standalone Apple Watch app, HealthKit integration, Home screen widgets

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### UnDo

[App page](https://appshunter.io/ios/app/undo/id6761196951)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Meditation Timer Meiso free?

Meditation Timer Meiso is free to download, with no in-app purchases.

### Is UnDo free?

UnDo is free to download, with no in-app purchases.

### Do Meditation Timer Meiso or UnDo have ads?

Neither Meditation Timer Meiso nor UnDo shows ads.

### Which is updated more often, Meditation Timer Meiso or UnDo?

Meditation Timer Meiso ships an update every 9 days, and UnDo every 5 days. Most recently, Meditation Timer Meiso was updated on October 16, 2026 and UnDo on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*