# Brain Training vs 鏡文字の逆読みONLINE

The clearest difference is iOS requirement: Brain Training at 13.0 against 鏡文字の逆読みONLINE's 15.0. 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.

Brain Training ships an update every 9 days, 鏡文字の逆読みONLINE every 5 days. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Brain Training | 鏡文字の逆読みONLINE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/brain-trainingfind-numbers/id6746371027/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 254 MB | 68 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideyuki Aono](https://appshunter.io/developer/1458194648) | [BEAK,K.K.](https://appshunter.io/developer/1808079760) |

## What reviewers say

### Brain Training

[App page](https://appshunter.io/ios/app/brain-trainingfind-numbers/id6746371027)

This game challenges you to find matching pairs of numbers hidden within a grid. Clear each stage by locating three pairs of the same number. It's a quick and engaging puzzle perfect for all ages.

**Highlights:** Find matching number pairs, Clear stages by finding three pairs, Easy-to-read 2-digit numbers, Randomized layouts for replayability, Quick brain workouts

**Features:** macOS Compatibility

**In-app purchases:** none


### 鏡文字の逆読みONLINE

[App page](https://appshunter.io/ios/app/online/id6754183448)

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

**In-app purchases:** none


## Frequently asked questions

### Is Brain Training free?

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

### Is 鏡文字の逆読みONLINE free?

鏡文字の逆読みONLINE is free to download, with no in-app purchases.

### Do Brain Training or 鏡文字の逆読みONLINE have ads?

Both Brain Training and 鏡文字の逆読みONLINE show ads.

### Which is updated more often, Brain Training or 鏡文字の逆読みONLINE?

Brain Training ships an update every 9 days, and 鏡文字の逆読みONLINE every 5 days. Most recently, Brain Training was updated on October 19, 2026 and 鏡文字の逆読みONLINE on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*