# 彩虹时钟 vs Flip Focus

The clearest difference is update cadence: Flip Focus at fortnightly against 彩虹时钟's every 2 months. Flip Focus also leads on iOS requirement (16.4 vs 18.6). On price, ads, in-app purchases 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 and Flip Focus sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

彩虹时钟 ships an update every 2 months, Flip Focus fortnightly. The most recent releases landed on October 4, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 彩虹时钟 | Flip Focus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 86 MB | 48 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rainbow Forest Co., Ltd](https://appshunter.io/developer/1739974336) | [Augustine Ezeh](https://appshunter.io/developer/6790922868) |

## 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 |


### Flip Focus

[App page](https://appshunter.io/ios/app/flip-focus-deep-work-timer/id6790922866)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Yearly Premium | $24.99 | per year |
| Lifetime Premium | $59.99 | one-time |


## Frequently asked questions

### Is 彩虹时钟 free?

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

### Is Flip Focus free?

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

### Do 彩虹时钟 or Flip Focus have ads?

Neither 彩虹时钟 nor Flip Focus shows ads.

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

彩虹时钟 ships an update every 2 months, and Flip Focus fortnightly. Most recently, 彩虹时钟 was updated on October 4, 2026 and Flip Focus on October 19, 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.*