# correct vs Shake Judge

The clearest difference is iOS requirement: Shake Judge at 15.6 against correct's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

correct ships an update every 6 months, Shake Judge every 5 months. The most recent releases landed on June 20, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | correct | Shake Judge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 5 months** |
| Size | 4 MB | 9 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [hiromu izuwa](https://appshunter.io/developer/599721911) | [Yusaku Maki](https://appshunter.io/developer/1493369014) |

## What reviewers say

### correct

[App page](https://appshunter.io/ios/app/correct/id625981167)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shake Judge

[App page](https://appshunter.io/ios/app/shake-judge/id1543329989)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is correct free?

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

### Is Shake Judge free?

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

### Do correct or Shake Judge have ads?

Both correct and Shake Judge show ads.

### Which is updated more often, correct or Shake Judge?

correct ships an update every 6 months, and Shake Judge every 5 months. Most recently, correct was updated on June 20, 2026 and Shake Judge on September 8, 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.*