# Math Brain Challenge vs PlusGrid

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

Both are free to download. Math Brain Challenge sells 3 in-app purchases, starting at $0.99 per month. PlusGrid asks for nothing beyond the download.

Math Brain Challenge ships an update weekly, PlusGrid every 3 days. The most recent releases landed on September 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Math Brain Challenge | PlusGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/plusgrid-math-sudoku-puzzle/id6769464938/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Free |
| Size | 60 MB | 30 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Sefik Cevik](https://appshunter.io/developer/1539363112) | [YAROSLAV RUDENKO](https://appshunter.io/developer/1896660662) |

## What reviewers say

### Math Brain Challenge

[App page](https://appshunter.io/ios/app/math-brain-challenge/id6753904419)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per month |
| Premium Access | $9.99 | per year |
| Premium - Lifetime Access | $19.99 | one-time |


### PlusGrid

[App page](https://appshunter.io/ios/app/plusgrid-math-sudoku-puzzle/id6769464938)

This number puzzle game combines elements of Sudoku, Kakuro, and Killer Sudoku. Fill grids with digits so rows and columns sum correctly, with no repeating numbers. Enjoy multiple grid sizes, difficulties, and helpful features for a relaxing brain workout.

**Highlights:** Sudoku, Kakuro, and Killer Sudoku mix, Multiple grid sizes (3x3, 4x4, 5x5), Three difficulty levels, Pencil marks, hints, and undo, Timer, streaks, and best times, Light and dark themes, Offline play

**In-app purchases:** none


## Frequently asked questions

### Is Math Brain Challenge free?

Math Brain Challenge is free to download, with in-app purchases available.

### Is PlusGrid free?

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

### Do Math Brain Challenge or PlusGrid have ads?

Math Brain Challenge shows ads; PlusGrid does not.

### Which is updated more often, Math Brain Challenge or PlusGrid?

Math Brain Challenge ships an update weekly, and PlusGrid every 3 days. Most recently, Math Brain Challenge was updated on September 1, 2026 and PlusGrid on September 19, 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.*