# Bubble Sort Puzzles vs Ring Stack

The clearest difference is rating: Ring Stack at 4.9 against Bubble Sort Puzzles's 4.4. Bubble Sort Puzzles's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, update cadence and monetization model there is nothing between them.

Both are free to download. Ring Stack sells 1 one-off in-app purchase. Bubble Sort Puzzles asks for nothing beyond the download.

Ring Stack holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 8 and 17 respectively.

Bubble Sort Puzzles ships an update every 6 weeks, Ring Stack every 5 weeks. The most recent releases landed on September 27, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Bubble Sort Puzzles | Ring Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (8 ratings)](https://appshunter.io/ios/app/bubble-sort-puzzles/id1610141528/reviews) | **[4.9 (17 ratings)](https://appshunter.io/ios/app/ring-stack-color-sort/id1610379899/reviews)** |
| Number of ratings | 8 | **17** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 302 MB | 61 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oleksii Korban](https://appshunter.io/developer/1610141530) | [Sergei Shendrikov](https://appshunter.io/developer/1548534996) |

## What reviewers say

### Bubble Sort Puzzles

[App page](https://appshunter.io/ios/app/bubble-sort-puzzles/id1610141528)

A relaxing yet challenging puzzle game where you sort colored balls into tubes. Exercise your brain with simple one-finger controls and no time limits. Enjoy the game at your own pace.

**Highlights:** Sort colored balls, One finger control, Free to play, No time limit, Relaxing gameplay, Brain exercise

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring Stack

[App page](https://appshunter.io/ios/app/ring-stack-color-sort/id1610379899)

Engage in a classic and addictive puzzle experience. Arrange colorful hoops by sorting them onto the correct stacks. This game offers a simple yet challenging way to test your sorting skills.

**Highlights:** Classic addictive puzzle gameplay, Colorful hoop sorting, Simple and challenging mechanics, Intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Bubble Sort Puzzles free?

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

### Is Ring Stack free?

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

### Which has better reviews, Bubble Sort Puzzles or Ring Stack?

Ring Stack is rated higher. Bubble Sort Puzzles averages 4.4 out of 5 from 8 ratings, while Ring Stack averages 4.9 from 17 ratings.

### Do Bubble Sort Puzzles or Ring Stack have ads?

Ring Stack shows ads; Bubble Sort Puzzles does not.

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

Bubble Sort Puzzles ships an update every 6 weeks, and Ring Stack every 5 weeks. Most recently, Bubble Sort Puzzles was updated on September 27, 2026 and Ring Stack on October 5, 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.*