# Peter Rabbit (ピーターラビット) vs Addition Algorithm

The clearest difference is update cadence: Addition Algorithm at every 6 days against Peter Rabbit (ピーターラビット)'s every 4 months. Addition Algorithm also leads on iOS requirement (16.0 vs 18.2). 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.

Peter Rabbit (ピーターラビット) ships an update every 4 months, Addition Algorithm every 6 days. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Peter Rabbit (ピーターラビット) | Addition Algorithm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 days** |
| Size | 153 MB | 56 MB |
| Requires iOS | 18.2 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Dick](https://appshunter.io/developer/821338172) | [JASON A RIGBY](https://appshunter.io/developer/1811566397) |

## What reviewers say

### Peter Rabbit (ピーターラビット)

[App page](https://appshunter.io/ios/app/peter-rabbit/id6738369911)

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

**In-app purchases:** none


### Addition Algorithm

[App page](https://appshunter.io/ios/app/addition-algorithm/id6760708208)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Peter Rabbit (ピーターラビット) free?

Peter Rabbit (ピーターラビット) is free to download, with no in-app purchases.

### Is Addition Algorithm free?

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

### Do Peter Rabbit (ピーターラビット) or Addition Algorithm have ads?

Neither Peter Rabbit (ピーターラビット) nor Addition Algorithm shows ads.

### Which is updated more often, Peter Rabbit (ピーターラビット) or Addition Algorithm?

Peter Rabbit (ピーターラビット) ships an update every 4 months, and Addition Algorithm every 6 days. Most recently, Peter Rabbit (ピーターラビット) was updated on October 8, 2026 and Addition Algorithm on October 16, 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.*