# 81 Rush vs Brain Training

The clearest difference is in-app purchases: Brain Training at none against 81 Rush's 3. Brain Training also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 81 Rush sells 3 one-off in-app purchases. Brain Training asks for nothing beyond the download.

81 Rush ships an update fortnightly, Brain Training every 3 weeks. The most recent releases landed on October 1, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 81 Rush | Brain Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (31 ratings)](https://appshunter.io/ios/app/81-rush/id881743883/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 129 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hoang Phan](https://appshunter.io/developer/881747886) | [Hyunwoo Lee](https://appshunter.io/developer/1883358620) |

## What reviewers say

### 81 Rush

[App page](https://appshunter.io/ios/app/81-rush/id881743883)

A 9x9 board puzzle game where players tap numbers from 1 to 81 in ascending order. It requires focus, speed, and memory to achieve high scores.

**Highlights:** 9x9 board puzzle, Tap numbers 1-81, Ascending order gameplay, Focus and speed challenge, High score pursuit

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Pass · 1 Month | $0.99 | one-time |
| Ad-Free Pass · 3 Months | $1.99 | one-time |
| No more Ads | $9.99 | one-time |


### Brain Training

[App page](https://appshunter.io/ios/app/brain-training-brain-age-test/id6789837132)

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

**In-app purchases:** none


## Frequently asked questions

### Is 81 Rush free?

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

### Is Brain Training free?

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

### Do 81 Rush or Brain Training have ads?

81 Rush shows ads; Brain Training does not.

### Which is updated more often, 81 Rush or Brain Training?

81 Rush ships an update fortnightly, and Brain Training every 3 weeks. Most recently, 81 Rush was updated on October 1, 2026 and Brain Training on October 21, 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.*