# Oust vs TriLevelChess

The clearest difference is price: Oust at Free against TriLevelChess's $0.99. Oust also leads on update cadence (every 4 days vs every 2 months) and iOS requirement (15.0 vs 17.6). TriLevelChess's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Oust is free to download; TriLevelChess costs $0.99 up front. Oust sells 2 in-app purchases, starting at $3.99 per month. TriLevelChess asks for nothing beyond the download.

Oust ships an update every 4 days, TriLevelChess every 2 months. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Oust | TriLevelChess |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Size | 125 MB | 16 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Vapolia](https://appshunter.io/developer/889942216) | [David Michael Matusow](https://appshunter.io/developer/1835497022) |

## What reviewers say

### Oust

[App page](https://appshunter.io/ios/app/oust-a-very-challenging-game/id6749748375)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $22.99 | per year |


### TriLevelChess

[App page](https://appshunter.io/ios/app/trilevelchess/id6754844510)

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

**In-app purchases:** none


## Frequently asked questions

### Is Oust free?

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

### Is TriLevelChess free?

TriLevelChess costs $0.99, with no in-app purchases.

### Do Oust or TriLevelChess have ads?

Neither Oust nor TriLevelChess shows ads.

### Which is updated more often, Oust or TriLevelChess?

Oust ships an update every 4 days, and TriLevelChess every 2 months. Most recently, Oust was updated on November 5, 2026 and TriLevelChess on October 30, 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.*