# RE vs Sudoku Brain Puzzle

The clearest difference is ads: RE at none against Sudoku Brain Puzzle's shown. RE also leads on iOS requirement (7.0 vs 13.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. RE sells 1 one-off in-app purchase and Sudoku Brain Puzzle sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

RE ships an update every 4 weeks, Sudoku Brain Puzzle every 5 weeks. The most recent releases landed on November 5, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | RE | Sudoku Brain Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (14 ratings)](https://appshunter.io/ios/app/re-trace/id1264752380/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 110 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stewart Thomson](https://appshunter.io/developer/816337746) | [MOBIRIX](https://appshunter.io/developer/349276666) |

## What reviewers say

### RE

[App page](https://appshunter.io/ios/app/re-trace/id1264752380)

A memory-based arcade game where players tap flashing tiles in sequence. The difficulty increases as you progress, with added elements like combo multipliers and limited lives. Compete with friends for the highest score.

**Highlights:** Memory tile matching, Increasing difficulty, Combo multipliers, Limited lives, High score competition, Arcade gameplay

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Sudoku Brain Puzzle

[App page](https://appshunter.io/ios/app/sudoku-brain-puzzle/id6615072867)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ruby 300 | $1.99 | one-time |
| Ruby 500 | $2.99 | one-time |
| Ruby 1000 | $6.99 | one-time |
| No Ads Package | $6.99 | one-time |
| Ruby 3300 | $19.99 | one-time |
| Ruby 6000 | $34.99 | one-time |
| Ruby 13000 | $69.99 | one-time |


## Frequently asked questions

### Is RE free?

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

### Is Sudoku Brain Puzzle free?

Sudoku Brain Puzzle is free to download, with in-app purchases available.

### Do RE or Sudoku Brain Puzzle have ads?

Sudoku Brain Puzzle shows ads; RE does not.

### Which is updated more often, RE or Sudoku Brain Puzzle?

RE ships an update every 4 weeks, and Sudoku Brain Puzzle every 5 weeks. Most recently, RE was updated on November 5, 2026 and Sudoku Brain Puzzle on November 4, 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.*