# Solitaire | TriPeaks vs Four By 21

The clearest difference is iOS requirement: Solitaire | TriPeaks at 12.0 against Four By 21's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Solitaire | TriPeaks ships an update every 3 months, Four By 21 every 4 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Solitaire | TriPeaks | Four By 21 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 4 months |
| Size | 33 MB | 22 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qais Ali](https://appshunter.io/developer/577053562) | [Alexander Harm](https://appshunter.io/developer/1012507990) |

## What reviewers say

### Solitaire | TriPeaks

[App page](https://appshunter.io/ios/app/solitaire-tripeaks/id1270101775)

**Features:** Vision Pro support

**In-app purchases:** none


### Four By 21

[App page](https://appshunter.io/ios/app/four-by-21/id1501220469)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solitaire | TriPeaks free?

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

### Is Four By 21 free?

Four By 21 is free to download, with no in-app purchases.

### Do Solitaire | TriPeaks or Four By 21 have ads?

Both Solitaire | TriPeaks and Four By 21 show ads.

### Which is updated more often, Solitaire | TriPeaks or Four By 21?

Solitaire | TriPeaks ships an update every 3 months, and Four By 21 every 4 months. Most recently, Solitaire | TriPeaks was updated on October 26, 2026 and Four By 21 on October 27, 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.*