# 彩虹时钟 vs MindFlow 心流

The clearest difference is in-app purchases: MindFlow 心流 at none against 彩虹时钟's 2. MindFlow 心流 also leads on update cadence (daily vs every 6 weeks). 彩虹时钟's advantage is device support (3 vs 1) and iOS requirement (18.6 vs 26.0). On price and ads 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. MindFlow 心流 asks for nothing beyond the download.

彩虹时钟 ships an update every 6 weeks, MindFlow 心流 daily. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 彩虹时钟 | MindFlow 心流 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Size | 95 MB | 4 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rainbow Forest Co., Ltd](https://appshunter.io/developer/1739974336) | [成云 郑](https://appshunter.io/developer/1499241004) |

## 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 |


### MindFlow 心流

[App page](https://appshunter.io/ios/app/mindflow/id6755074783)

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

**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 MindFlow 心流 free?

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

### Do 彩虹时钟 or MindFlow 心流 have ads?

Neither 彩虹时钟 nor MindFlow 心流 shows ads.

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

彩虹时钟 ships an update every 6 weeks, and MindFlow 心流 daily. Most recently, 彩虹时钟 was updated on October 21, 2026 and MindFlow 心流 on October 14, 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.*