# Mondrian Sudoku vs simian.interface++

The clearest difference is in-app purchases: Mondrian Sudoku at none against simian.interface++'s 1. simian.interface++'s advantage is update cadence (daily vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. simian.interface++ sells 1 one-off in-app purchase. Mondrian Sudoku asks for nothing beyond the download.

Mondrian Sudoku ships an update every 3 weeks, simian.interface++ daily. The most recent releases landed on September 11, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Mondrian Sudoku | simian.interface++ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/simianinterface-plus-plus/id6502666587/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 106 MB | 152 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [康 杨](https://appshunter.io/developer/843812777) | [vested interest LLC](https://appshunter.io/developer/1746378363) |

## What reviewers say

### Mondrian Sudoku

[App page](https://appshunter.io/ios/app/mondrian-sudoku/id6467719812)

**Features:** macOS Compatibility

**In-app purchases:** none


### simian.interface++

[App page](https://appshunter.io/ios/app/simianinterface-plus-plus/id6502666587)

An abstract puzzle game that challenges players with pattern recognition and intuition. It features a unique soundtrack, an original version of the game, and a new infinite mode with procedurally generated content for endless replayability.

**Highlights:** Abstract puzzle experience, Pattern recognition challenges, Intuitive gameplay, Original game included, Infinite_loop mode, Procedurally generated levels

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Full Game | $1.99 | one-time |


## Frequently asked questions

### Is Mondrian Sudoku free?

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

### Is simian.interface++ free?

simian.interface++ is free to download, with in-app purchases available.

### Do Mondrian Sudoku or simian.interface++ have ads?

Neither Mondrian Sudoku nor simian.interface++ shows ads.

### Which is updated more often, Mondrian Sudoku or simian.interface++?

Mondrian Sudoku ships an update every 3 weeks, and simian.interface++ daily. Most recently, Mondrian Sudoku was updated on September 11, 2026 and simian.interface++ on June 5, 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.*