# Happy Differences vs Bubble Sort

The clearest difference is in-app purchases: Bubble Sort at none against Happy Differences's 12. Happy Differences's advantage is update cadence (every 5 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Happy Differences sells 12 one-off in-app purchases. Bubble Sort asks for nothing beyond the download.

Happy Differences ships an update every 5 days, Bubble Sort monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Happy Differences | Bubble Sort |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (6.4K ratings)](https://appshunter.io/ios/app/happy-differences/id1670817236/reviews)** | — |
| Number of ratings | **6.4K** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 237 MB | 128 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [New Story Inc. (Apps)](https://appshunter.io/developer/1468607831) | [Abdulkadir Tekpinar](https://appshunter.io/developer/1896772409) |

## What reviewers say

### Happy Differences

[App page](https://appshunter.io/ios/app/happy-differences/id1670817236)

Engage in a relaxing picture puzzle game with no time limits. Explore over 100 diverse images, from cosmic scenes to underwater worlds, and train your memory by spotting subtle differences. Utilize helpful hints when you get stuck.

**Highlights:** No time limit, Over 100 pictures, Memory training, Hint button, Diverse image themes

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin 100 | $1.99 | one-time |
| Mini Pack | $1.99 | one-time |
| Beginner's Pack | $3.99 | one-time |
| No AD | $4.99 | one-time |
| Starter Pack | $4.99 | one-time |
| Advanced Pack | $6.99 | one-time |
| Coin 500 | $8.99 | one-time |
| Bronze Pack | $9.99 | one-time |
| Coin 1000 | $12.99 | one-time |
| Gold Pack | $19.99 | one-time |
| Coin 2500 | $23.99 | one-time |
| Coin 10000 | $86.99 | one-time |

**What reviewers like**

- 👍 Keeps the mind active
- 👍 Clear and colorful graphics
- 👍 Fun game to play
- 👍 Enjoyable experience
- 👍 Beautiful

**What reviewers complain about**

- 🔍 Colors too light
- 🕰️ Too easy
- 🛑 Ads in the middle of a level

**Reported bugs**

- Game shuts down before completing a level

**Requested features**

- Add sound
- Improve stability to prevent game shutdowns


### Bubble Sort

[App page](https://appshunter.io/ios/app/bubble-sort-color-puzzle-mind/id6774314035)

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

**In-app purchases:** none


## Frequently asked questions

### Is Happy Differences free?

Happy Differences is free to download, with in-app purchases available.

### Is Bubble Sort free?

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

### Do Happy Differences or Bubble Sort have ads?

Both Happy Differences and Bubble Sort show ads.

### Which is updated more often, Happy Differences or Bubble Sort?

Happy Differences ships an update every 5 days, and Bubble Sort monthly. Most recently, Happy Differences was updated on October 30, 2026 and Bubble Sort on October 31, 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.*