# Cat Sort vs Stack APT.

The clearest difference is rating: Stack APT. at 5.0 against Cat Sort's 3.6. Cat Sort's advantage is ratings volume (8 vs 1) and iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Cat Sort sells 5 one-off in-app purchases and Stack APT. sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Stack APT. holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Cat Sort has 8 ratings behind it against 1, so its average is the more settled of the two.

Cat Sort ships an update every 4 weeks, Stack APT. every 5 weeks. The most recent releases landed on June 7, 2026 and August 11, 2026 respectively.

## The numbers

| Metric | Cat Sort | Stack APT. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (8 ratings)](https://appshunter.io/ios/app/cat-sort-color-puzzle/id6689515767/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stack-apt/id6737270698/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 171 MB | 88 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [PERCAS VIET NAM JOINT STOCK COMPANY](https://appshunter.io/developer/1587673711) | [Smelly Cat](https://appshunter.io/developer/1775690833) |

## What reviewers say

### Cat Sort

[App page](https://appshunter.io/ios/app/cat-sort-color-puzzle/id6689515767)

Engage your mind with a logic puzzle game featuring adorable cats. Sort them by color onto shelves to complete levels. Enjoy a relaxing experience with simple controls and challenging gameplay.

**Highlights:** Cute cat characters, Thousands of levels, One-finger control, Relaxing sound and visuals, Challenging to master, Boosters available

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $0.99 | one-time |
| 1000 Coins | $1.99 | one-time |
| Fun Pack | $4.99 | one-time |
| 5000 Coins | $7.99 | one-time |
| Master Pack | $19.99 | one-time |


### Stack APT.

[App page](https://appshunter.io/ios/app/stack-apt/id6737270698)

Tap to drop hanging apartments precisely into place and stack them as high as possible. Master timing and accuracy to build the ultimate skyscraper in this engaging game.

**Highlights:** Precise apartment dropping, Timing-based gameplay, Stacking mechanic, Build skyscrapers, Simple tap controls

**Features:** macOS Compatibility

**In-app purchases (1)**

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


## Frequently asked questions

### Is Cat Sort free?

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

### Is Stack APT. free?

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

### Which has better reviews, Cat Sort or Stack APT.?

Stack APT. is rated higher. Cat Sort averages 3.6 out of 5 from 8 ratings, while Stack APT. averages 5.0 from 1 ratings.

### Do Cat Sort or Stack APT. have ads?

Both Cat Sort and Stack APT. show ads.

### Which is updated more often, Cat Sort or Stack APT.?

Cat Sort ships an update every 4 weeks, and Stack APT. every 5 weeks. Most recently, Cat Sort was updated on June 7, 2026 and Stack APT. on August 11, 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.*