# Sort & Relax vs Ball Stack

The clearest difference is in-app purchases: Ball Stack at none against Sort & Relax's 10. Ball Stack also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.2). Sort & Relax's advantage is update cadence (every 4 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Sort & Relax sells 10 one-off in-app purchases. Ball Stack asks for nothing beyond the download.

Sort & Relax ships an update every 4 days, Ball Stack every 3 weeks. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Sort & Relax | Ball Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 154 MB | 2 MB |
| Requires iOS | 15.2 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [holudi e.U.](https://appshunter.io/developer/1705701048) | [Rufe.org LLC](https://appshunter.io/developer/1683900465) |

## What reviewers say

### Sort & Relax

[App page](https://appshunter.io/ios/app/sort-and-relax/id6464299054)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Animal Faces Theme | $1.99 | one-time |
| 3D Balls Theme | $1.99 | one-time |
| Fruit Halves Theme | $1.99 | one-time |
| US Flags Theme I | $1.99 | one-time |
| US Flags Theme II | $1.99 | one-time |
| World Flags Theme I | $1.99 | one-time |
| Christmas Theme I | $1.99 | one-time |
| 25 containers | $3.99 | one-time |
| Level Unlock | $4.99 | one-time |
| 100 containers | $9.99 | one-time |


### Ball Stack

[App page](https://appshunter.io/ios/app/ball-stack-color-sort-puzzle/id6470507681)

**In-app purchases:** none


## Frequently asked questions

### Is Sort & Relax free?

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

### Is Ball Stack free?

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

### Do Sort & Relax or Ball Stack have ads?

Sort & Relax shows ads; Ball Stack does not.

### Which is updated more often, Sort & Relax or Ball Stack?

Sort & Relax ships an update every 4 days, and Ball Stack every 3 weeks. Most recently, Sort & Relax was updated on October 4, 2026 and Ball Stack on October 8, 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.*