# Memory Concentration vs Bird Sort Funny

The clearest difference is price: Bird Sort Funny at Free against Memory Concentration's $0.99. Bird Sort Funny also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 34 months). On ads, device support and iOS requirement there is nothing between them.

Bird Sort Funny is free to download; Memory Concentration costs $0.99 up front. Memory Concentration sells 1 one-off in-app purchase. Bird Sort Funny asks for nothing beyond the download.

Memory Concentration ships an update every 34 months, Bird Sort Funny every 3 weeks. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Memory Concentration | Bird Sort Funny |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 3 weeks** |
| Size | 12 MB | 58 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ligature Technologies, LLC.](https://appshunter.io/developer/862705551) | [Quyen Pham](https://appshunter.io/developer/1167313158) |

## What reviewers say

### Memory Concentration

[App page](https://appshunter.io/ios/app/memory-concentration/id910311579)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Memory Ad Removal | $0.99 | one-time |


### Bird Sort Funny

[App page](https://appshunter.io/ios/app/bird-sort-funny/id6505095152)

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

**In-app purchases:** none


## Frequently asked questions

### Is Memory Concentration free?

Memory Concentration costs $0.99, and also offers in-app purchases.

### Is Bird Sort Funny free?

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

### Do Memory Concentration or Bird Sort Funny have ads?

Neither Memory Concentration nor Bird Sort Funny shows ads.

### Which is updated more often, Memory Concentration or Bird Sort Funny?

Memory Concentration ships an update every 34 months, and Bird Sort Funny every 3 weeks. Most recently, Memory Concentration was updated on September 23, 2026 and Bird Sort Funny on September 19, 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.*