# 彩虹时钟 vs Diiing

The clearest difference is in-app purchases: Diiing at none against 彩虹时钟's 2. Diiing also leads on update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (15.1 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. 彩虹时钟 sells 2 in-app purchases, starting at $6.99 per year. Diiing asks for nothing beyond the download.

彩虹时钟 ships an update every 6 weeks, Diiing every 2 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 彩虹时钟 | Diiing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Size | 95 MB | 24 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rainbow Forest Co., Ltd](https://appshunter.io/developer/1739974336) | [可昕 刘](https://appshunter.io/developer/1837615673) |

## What reviewers say

### 彩虹时钟

[App page](https://appshunter.io/ios/app/id6482986395)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 彩虹PRO 年度订阅 | $6.99 | per year |
| 永久彩虹PRO 会员 | $14.99 | one-time |


### Diiing

[App page](https://appshunter.io/ios/app/diiing-visual-time-jar/id6752020158)

**In-app purchases:** none


## Frequently asked questions

### Is 彩虹时钟 free?

彩虹时钟 is free to download, with in-app purchases available.

### Is Diiing free?

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

### Do 彩虹时钟 or Diiing have ads?

Neither 彩虹时钟 nor Diiing shows ads.

### Which is updated more often, 彩虹时钟 or Diiing?

彩虹时钟 ships an update every 6 weeks, and Diiing every 2 weeks. Most recently, 彩虹时钟 was updated on November 4, 2026 and Diiing on October 30, 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.*