# 色感测试 vs GoodRainbow

The clearest difference is in-app purchases: 色感测试 at none against GoodRainbow's 2. 色感测试 also leads on iOS requirement (13 vs 16.6). GoodRainbow's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. GoodRainbow sells 2 in-app purchases, starting at $0.99 per month. 色感测试 asks for nothing beyond the download.

色感测试 ships an update every 3 months, GoodRainbow every 2 weeks. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 色感测试 | GoodRainbow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 52 MB | 3 MB |
| Requires iOS | **13** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Render Apps](https://appshunter.io/developer/1614413964) | [含章 赵](https://appshunter.io/developer/1876562804) |

## What reviewers say

### 色感测试

[App page](https://appshunter.io/ios/app/id6745006026)

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

**In-app purchases:** none


### GoodRainbow

[App page](https://appshunter.io/ios/app/goodrainbow/id6759077138)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Good Rainbow Premium | $0.99 | per month |
| Rainbow Premium | $9.99 | per year |


## Frequently asked questions

### Is 色感测试 free?

色感测试 is free to download, with no in-app purchases.

### Is GoodRainbow free?

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

### Do 色感测试 or GoodRainbow have ads?

Neither 色感测试 nor GoodRainbow shows ads.

### Which is updated more often, 色感测试 or GoodRainbow?

色感测试 ships an update every 3 months, and GoodRainbow every 2 weeks. Most recently, 色感测试 was updated on October 25, 2026 and GoodRainbow 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.*