# Sort Stack vs Ring Sort Puzzle

The clearest difference is in-app purchases: Ring Sort Puzzle at none against Sort Stack's 6. Ring Sort Puzzle also leads on rating (4.9 vs 4.5) and review sentiment (100% vs 75%). Sort Stack's advantage is ads (none vs shown) and update cadence (monthly vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Sort Stack sells 6 one-off in-app purchases. Ring Sort Puzzle asks for nothing beyond the download.

Ring Sort Puzzle holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Sort Stack has 516 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 75% of Sort Stack's written reviews are positive against 100% of Ring Sort Puzzle's.

Sort Stack ships an update monthly, Ring Sort Puzzle every 5 months. The most recent releases landed on August 11, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | Sort Stack | Ring Sort Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (516 ratings)](https://appshunter.io/ios/app/sort-stack/id1544010456/reviews) | **[4.9 (20 ratings)](https://appshunter.io/ios/app/ring-sort-puzzle/id1639456761/reviews)** |
| Number of ratings | **516** | 20 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 45 MB | 104 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vnstart LLC](https://appshunter.io/developer/1467854570) | [Hirokazu Uno](https://appshunter.io/developer/1570016990) |

## What reviewers say

### Sort Stack

[App page](https://appshunter.io/ios/app/sort-stack/id1544010456)

Engage your mind with a colorful ring stacking puzzle game. Strategically move rings to sort them by color, with over 2000 puzzles and unlimited gameplay. Enjoy this free, offline challenge that's easy to learn but difficult to master.

**Highlights:** Ring classification puzzles, Sort rings by color, Move one ring at a time, 2000+ puzzles, Unlimited gameplay, Offline play

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +50 Undo | $0.99 | one-time |
| +120 Undo | $1.99 | one-time |
| Remove ads | $2.99 | one-time |
| +250 Undo | $2.99 | one-time |
| Unlimited Undo | $5.99 | one-time |
| Unlock All | $5.99 | one-time |


### Ring Sort Puzzle

[App page](https://appshunter.io/ios/app/ring-sort-puzzle/id1639456761)

A relaxing puzzle game challenges you to sort colored rings by matching them to the same color. Progress through increasingly complex levels with more colors. The game offers a constant save feature, allowing you to pause and resume your progress anytime.

**Highlights:** Color ring sorting gameplay, Increasing level difficulty, Multiple color options, Constant save function, Resume at any time

**In-app purchases:** none


## Frequently asked questions

### Is Sort Stack free?

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

### Is Ring Sort Puzzle free?

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

### Which has better reviews, Sort Stack or Ring Sort Puzzle?

Ring Sort Puzzle is rated higher. Sort Stack averages 4.5 out of 5 from 516 ratings, while Ring Sort Puzzle averages 4.9 from 20 ratings.

### Do Sort Stack or Ring Sort Puzzle have ads?

Ring Sort Puzzle shows ads; Sort Stack does not.

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

Sort Stack ships an update monthly, and Ring Sort Puzzle every 5 months. Most recently, Sort Stack was updated on August 11, 2026 and Ring Sort Puzzle on August 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*