# Flip Clock vs ずんだチャイム

The clearest difference is in-app purchases: ずんだチャイム at none against Flip Clock's 1. ずんだチャイム also leads on update cadence (every 9 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Flip Clock sells 1 one-off in-app purchase. ずんだチャイム asks for nothing beyond the download.

Flip Clock ships an update monthly, ずんだチャイム every 9 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Flip Clock | ずんだチャイム |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Size | 3 MB | 185 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [磊 刘](https://appshunter.io/developer/1892400556) | [masatomo ota](https://appshunter.io/developer/6787378793) |

## What reviewers say

### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clock-timer-and-focus/id6767742797)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimpleClock Pro Edition | $2.99 | one-time |


### ずんだチャイム

[App page](https://appshunter.io/ios/app/id6787574809)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Flip Clock free?

Flip Clock is free to download, with in-app purchases available.

### Is ずんだチャイム free?

ずんだチャイム is free to download, with no in-app purchases.

### Do Flip Clock or ずんだチャイム have ads?

Neither Flip Clock nor ずんだチャイム shows ads.

### Which is updated more often, Flip Clock or ずんだチャイム?

Flip Clock ships an update monthly, and ずんだチャイム every 9 days. Most recently, Flip Clock was updated on October 16, 2026 and ずんだチャイム on October 6, 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.*