# Not Not vs Doing Math game

The clearest difference is in-app purchases: Doing Math game at none against Not Not's 10. Doing Math game also leads on iOS requirement (12.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Not Not sells 8 one-off in-app purchases. Doing Math game asks for nothing beyond the download.

## The numbers

| Metric | Not Not | Doing Math game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/not-not-a-brain-buster/id1107589341/reviews)** | — |
| Number of ratings | **1.1K** | — |
| Positive reviews | 78.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 75 MB | 37 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Alternative Shift](https://appshunter.io/developer/394617049) | [Andrey Lesnykh](https://appshunter.io/developer/1546855238) |

## What reviewers say

### Not Not

[App page](https://appshunter.io/ios/app/not-not-a-brain-buster/id1107589341)

Engage your brain with a logic and orientation puzzle game. Swipe your character according to increasingly complex instructions to reach higher levels. Offers two addictive game modes for a satisfying challenge.

**Highlights:** Logic and orientation challenges, Swipe-based character control, Increasingly complex instructions, Classic game mode, Challenge game mode, Addictive gameplay

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |
| Unlock World : The Liar | $0.99 | one-time |
| Emergency Kit | $0.99 | one-time |
| First Aid Kit | $0.99 | one-time |
| Survival Kit | $2.99 | one-time |
| Complete Kit | $4.99 | one-time |
| Immortal Kit | $9.99 | one-time |
| Ultimate Kit | $29.99 | one-time |

**What reviewers like**

- 🧠 Challenges the brain
- 🕹 Engaging and addictive gameplay
- 🕰 Good time-killer
- 👍 Simple yet effective game mechanics

**What reviewers complain about**

- 📺 Excessive ads and monetization
- 🐛 Bugs and technical issues
- 🔄 Language settings reset after each session
- 🔍 Difficulty progression can be uneven

**Reported bugs**

- Game freezes on startup
- Purchased ad removal not working
- Inconsistent swipe/input detection

**Requested features**

- More levels and game modes
- Option to disable music/sound effects
- Improved accessibility for color-blind players


### Doing Math game

[App page](https://appshunter.io/ios/app/doing-math-game/id1546855236)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Not Not free?

Not Not is free to download, with in-app purchases available.

### Is Doing Math game free?

Doing Math game is free to download, with no in-app purchases.

### Do Not Not or Doing Math game have ads?

Both Not Not and Doing Math game show ads.

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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.*