# Ring Sort vs Stack Up Circle

The clearest difference is in-app purchases: Stack Up Circle at none against Ring Sort's 10. Stack Up Circle also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Ring Sort sells 10 one-off in-app purchases. Stack Up Circle asks for nothing beyond the download.

Ring Sort ships an update every 3 weeks, Stack Up Circle every 5 days. Both last shipped on November 4, 2026.

## The numbers

| Metric | Ring Sort | Stack Up Circle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (5 ratings)](https://appshunter.io/ios/app/ring-sort-puzzle-game/id6471392971/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 288 MB | 87 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sablo Studio](https://appshunter.io/developer/1434408975) | [Rootcraft](https://appshunter.io/developer/1370994577) |

## What reviewers say

### Ring Sort

[App page](https://appshunter.io/ios/app/ring-sort-puzzle-game/id6471392971)

Engage in a relaxing 3D color sorting puzzle game. Drag and drop colorful rings to match them on stacks, offering thousands of challenging levels. Perfect for unwinding and exercising your logic skills.

**Highlights:** 3D color sorting gameplay, Drag and drop controls, Thousands of puzzle levels, Color matching challenges, Relaxing color therapy experience, Logic puzzle solving

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Undo | $0.99 | one-time |
| Hints | $0.99 | one-time |
| Fist of Gems | $0.99 | one-time |
| Add Tubes | $0.99 | one-time |
| Special Offer | $1.99 | one-time |
| Sack of Gems | $2.99 | one-time |
| Jumbo Offer | $3.99 | one-time |
| Chest of Gems | $4.99 | one-time |
| Mega Offer | $5.99 | one-time |
| Remove Ads | $9.99 | one-time |


### 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 Ring Sort free?

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

### Is Stack Up Circle free?

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

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

Both Ring Sort and Stack Up Circle show ads.

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

Ring Sort ships an update every 3 weeks, and Stack Up Circle every 5 days. Most recently, Ring Sort was updated on November 4, 2026 and Stack Up Circle on November 4, 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.*