# RGB+ vs Scan Sudoku

The clearest difference is ads: RGB+ at none against Scan Sudoku's shown. RGB+ also leads on iOS requirement (8.0 vs 17.0). Scan Sudoku's advantage is update cadence (daily vs every 11 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RGB+ ships an update every 11 months, Scan Sudoku daily. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | RGB+ | Scan Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/rgb-plus/id1289495571/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Daily** |
| Monetization | Free | — |
| Size | 63 MB | 53 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Emil Mirzaian](https://appshunter.io/developer/1289495570) | [Hailemedhn Tegegne](https://appshunter.io/developer/1798976811) |

## What reviewers say

### RGB+

[App page](https://appshunter.io/ios/app/rgb-plus/id1289495571)

This puzzle game challenges players to combine primary colors (Red, Green, Blue) to create secondary colors (Cyan, Magenta, Yellow) and eventually White. Utilize familiar sliding block mechanics to clear the grid and achieve high scores.

**Highlights:** Additive RGB color model gameplay, Sliding block puzzle mechanics, Combine primary colors to make secondary, Create white by combining secondary colors, Leaderboard and high score sharing, Minimalist design

**Features:** macOS Compatibility

**In-app purchases:** none


### Scan Sudoku

[App page](https://appshunter.io/ios/app/scan-sudoku/id6762844167)

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

**In-app purchases:** none


## Frequently asked questions

### Is RGB+ free?

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

### Is Scan Sudoku free?

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

### Do RGB+ or Scan Sudoku have ads?

Scan Sudoku shows ads; RGB+ does not.

### Which is updated more often, RGB+ or Scan Sudoku?

RGB+ ships an update every 11 months, and Scan Sudoku daily. Most recently, RGB+ was updated on October 23, 2026 and Scan Sudoku on October 15, 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.*