# CauseCats vs Sort Letters 3D

The clearest difference is ads: CauseCats at none against Sort Letters 3D's shown. CauseCats also leads on iOS requirement (8.0 vs 12.5). Sort Letters 3D's advantage is update cadence (every 2 days vs every 6 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CauseCats ships an update every 6 months, Sort Letters 3D every 2 days. The most recent releases landed on October 14, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | CauseCats | Sort Letters 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 2 days** |
| Size | 194 MB | 125 MB |
| Requires iOS | **8.0** | 12.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tamalaki](https://appshunter.io/developer/1161836852) | [Dark Matter Oy](https://appshunter.io/developer/985584975) |

## What reviewers say

### CauseCats

[App page](https://appshunter.io/ios/app/causecats/id1161836853)

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

**In-app purchases:** none


### Sort Letters 3D

[App page](https://appshunter.io/ios/app/sort-letters-3d/id6749221692)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CauseCats free?

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

### Is Sort Letters 3D free?

Sort Letters 3D is free to download, with no in-app purchases.

### Do CauseCats or Sort Letters 3D have ads?

Sort Letters 3D shows ads; CauseCats does not.

### Which is updated more often, CauseCats or Sort Letters 3D?

CauseCats ships an update every 6 months, and Sort Letters 3D every 2 days. Most recently, CauseCats was updated on October 14, 2026 and Sort Letters 3D on October 18, 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.*