# Key Sort vs Stack Up Circle

The clearest difference is update cadence: Stack Up Circle at every 5 days against Key Sort's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

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

Key Sort ships an update fortnightly, Stack Up Circle every 5 days. The most recent releases landed on September 26, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Key Sort | Stack Up Circle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/key-sort/id6468569514/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 149 MB | 87 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ozan Kasikci](https://appshunter.io/developer/1485317310) | [Rootcraft](https://appshunter.io/developer/1370994577) |

## What reviewers say

### Key Sort

[App page](https://appshunter.io/ios/app/key-sort/id6468569514)

Arrange, mix, and combine keys to discover hidden treasures. This puzzle game challenges your organizational skills with satisfying gameplay.

**Highlights:** Stack keys, Order keys, Shuffle keys, Merge keys, Unlock treasures, Satisfying gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Stack Up Circle

[App page](https://appshunter.io/ios/app/stack-up-circle/id6473114736)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Key Sort free?

Key Sort is free to download, with no in-app purchases.

### Is Stack Up Circle free?

Stack Up Circle is free to download, with no in-app purchases.

### Do Key Sort or Stack Up Circle have ads?

Both Key Sort and Stack Up Circle show ads.

### Which is updated more often, Key Sort or Stack Up Circle?

Key Sort ships an update fortnightly, and Stack Up Circle every 5 days. Most recently, Key Sort was updated on September 26, 2026 and Stack Up Circle on September 13, 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.*