# simian.interface++ vs Sliding Puzzle

The clearest difference is in-app purchases: Sliding Puzzle at none against simian.interface++'s 1. simian.interface++'s advantage is ads (none vs shown) and update cadence (daily vs every 2 days). On price, device support and iOS requirement there is nothing between them.

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

simian.interface++ ships an update daily, Sliding Puzzle every 2 days. The most recent releases landed on June 5, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | simian.interface++ | Sliding Puzzle |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 days |
| Monetization | Free with in-app purchases | — |
| Size | 152 MB | 62 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [vested interest LLC](https://appshunter.io/developer/1746378363) | [Hiroki Nakamura](https://appshunter.io/developer/1819351468) |

## What reviewers say

### 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 |


### Sliding Puzzle

[App page](https://appshunter.io/ios/app/sliding-puzzle-essential/id6747007748)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is simian.interface++ free?

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

### Is Sliding Puzzle free?

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

### Do simian.interface++ or Sliding Puzzle have ads?

Sliding Puzzle shows ads; simian.interface++ does not.

### Which is updated more often, simian.interface++ or Sliding Puzzle?

simian.interface++ ships an update daily, and Sliding Puzzle every 2 days. Most recently, simian.interface++ was updated on June 5, 2026 and Sliding Puzzle on September 11, 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.*