# Color Blind Test (CBT) vs Memory Training 123

The clearest difference is update cadence: Color Blind Test (CBT) at every 3 weeks against Memory Training 123's every 10 months. Color Blind Test (CBT) also leads on iOS requirement (12.0 vs 17.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Color Blind Test (CBT) ships an update every 3 weeks, Memory Training 123 every 10 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Color Blind Test (CBT) | Memory Training 123 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Size | 34 MB | 10 MB |
| Requires iOS | **12.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Bishworaj Poudel](https://appshunter.io/developer/1716220331) | [MITSUKO MARGOT KUBOTA ONO](https://appshunter.io/developer/1799524637) |

## What reviewers say

### Color Blind Test (CBT)

[App page](https://appshunter.io/ios/app/color-blind-test-cbt/id6474288029)

**In-app purchases:** none


### Memory Training 123

[App page](https://appshunter.io/ios/app/memory-training-123/id6754791792)

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

**In-app purchases:** none


## Frequently asked questions

### Is Color Blind Test (CBT) free?

Color Blind Test (CBT) is free to download, with no in-app purchases.

### Is Memory Training 123 free?

Memory Training 123 is free to download, with no in-app purchases.

### Do Color Blind Test (CBT) or Memory Training 123 have ads?

Both Color Blind Test (CBT) and Memory Training 123 show ads.

### Which is updated more often, Color Blind Test (CBT) or Memory Training 123?

Color Blind Test (CBT) ships an update every 3 weeks, and Memory Training 123 every 10 months. Most recently, Color Blind Test (CBT) was updated on November 4, 2026 and Memory Training 123 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.*