# arithmetical restorations vs BrainBoost

The clearest difference is in-app purchases: arithmetical restorations at none against BrainBoost's 1. BrainBoost's advantage is update cadence (every 3 months vs every 6 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. BrainBoost sells 1 one-off in-app purchase. arithmetical restorations asks for nothing beyond the download.

arithmetical restorations ships an update every 6 months, BrainBoost every 3 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | arithmetical restorations | BrainBoost |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 90 MB | 31 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [有限会社ぴっくる](https://appshunter.io/developer/317768197) | [AppSeed, Incorporated.](https://appshunter.io/developer/1268184135) |

## What reviewers say

### arithmetical restorations

[App page](https://appshunter.io/ios/app/arithmetical-restorations/id883235211)

**Features:** macOS Compatibility

**In-app purchases:** none


### BrainBoost

[App page](https://appshunter.io/ios/app/brainboost-9-brain-games/id1475455172)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide ads | $2.99 | one-time |


## Frequently asked questions

### Is arithmetical restorations free?

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

### Is BrainBoost free?

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

### Do arithmetical restorations or BrainBoost have ads?

Both arithmetical restorations and BrainBoost show ads.

### Which is updated more often, arithmetical restorations or BrainBoost?

arithmetical restorations ships an update every 6 months, and BrainBoost every 3 months. Most recently, arithmetical restorations was updated on October 26, 2026 and BrainBoost on October 29, 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.*