# Re_Bound vs Arithmetic Train your Brain

The clearest difference is update cadence: Arithmetic Train your Brain at daily against Re_Bound's every 42 months. 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.

Re_Bound ships an update every 42 months, Arithmetic Train your Brain daily. The most recent releases landed on October 11, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Re_Bound | Arithmetic Train your Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/arithmetic-train-your-brain/id6451027097/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 42 months | **Daily** |
| Monetization | — | Ad-supported |
| Size | 21 MB | 64 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hoon Nam](https://appshunter.io/developer/452506721) | [minoru yamazaki](https://appshunter.io/developer/1449437588) |

## What reviewers say

### Re_Bound

[App page](https://appshunter.io/ios/app/re-bound/id1181703797)

**Features:** macOS Compatibility

**In-app purchases:** none


### Arithmetic Train your Brain

[App page](https://appshunter.io/ios/app/arithmetic-train-your-brain/id6451027097)

Engage in daily brain training with arithmetic puzzles. Compete against your past performance to improve your calculation skills and stimulate your mind. Enjoy a progressive difficulty system and track your progress with a calendar feature.

**Highlights:** Daily brain training, Compete with past self, Progressive difficulty levels, Four arithmetic operations, Calendar progress tracking, Unlimited play

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Re_Bound free?

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

### Is Arithmetic Train your Brain free?

Arithmetic Train your Brain is free to download, with no in-app purchases.

### Do Re_Bound or Arithmetic Train your Brain have ads?

Both Re_Bound and Arithmetic Train your Brain show ads.

### Which is updated more often, Re_Bound or Arithmetic Train your Brain?

Re_Bound ships an update every 42 months, and Arithmetic Train your Brain daily. Most recently, Re_Bound was updated on October 11, 2026 and Arithmetic Train your Brain on September 23, 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.*