# Project Solitaire vs OK Solitaire

The clearest difference is in-app purchases: Project Solitaire at none against OK Solitaire's 2. OK Solitaire's advantage is update cadence (daily vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OK Solitaire sells 2 in-app purchases, starting at $9.99 per year. Project Solitaire asks for nothing beyond the download.

Project Solitaire ships an update every 9 days, OK Solitaire daily. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Project Solitaire | OK Solitaire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/ok-solitaire/id6806094128/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 3 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AYSE AKSAKAL](https://appshunter.io/developer/1810667738) | [aeliox](https://appshunter.io/developer/303891545) |

## What reviewers say

### Project Solitaire

[App page](https://appshunter.io/ios/app/project-solitaire/id6756858404)

**Features:** macOS Compatibility

**In-app purchases:** none


### OK Solitaire

[App page](https://appshunter.io/ios/app/ok-solitaire/id6806094128)

A classic Klondike solitaire game redesigned for one-handed play on mobile. Features intuitive card handling, multiple play modes, and an 'Insight' mode to analyze game states. Enjoy a clean, ad-free experience with optional themes and features via subscription.

**Highlights:** One-handed vertical play, Intuitive card selection and movement, Undo and auto-flip options, Standard, Daily Challenge, and Only Wins modes, Insight mode for game analysis, Offline play, Game Center leaderboards

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OK Solitaire Full | $9.99 | per year |
| Unlock for life | $29.99 | one-time |


## Frequently asked questions

### Is Project Solitaire free?

Project Solitaire is free to download, with no in-app purchases.

### Is OK Solitaire free?

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

### Do Project Solitaire or OK Solitaire have ads?

Neither Project Solitaire nor OK Solitaire shows ads.

### Which is updated more often, Project Solitaire or OK Solitaire?

Project Solitaire ships an update every 9 days, and OK Solitaire daily. Most recently, Project Solitaire was updated on October 28, 2026 and OK Solitaire on October 29, 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.*