# Stack Star vs Unwound Block

The clearest difference is ads: Unwound Block at none against Stack Star's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Stack Star sells 10 one-off in-app purchases and Unwound Block sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Stack Star ships an update every 9 days, Unwound Block every 5 days. The most recent releases landed on November 13, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Stack Star | Unwound Block |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/stack-star-color-sort/id6770474297/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 361 MB | 143 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Moonstep Games](https://appshunter.io/developer/1827009450) | [BAYRAM ALI BAYRAK](https://appshunter.io/developer/1809549960) |

## What reviewers say

### Stack Star

[App page](https://appshunter.io/ios/app/stack-star-color-sort/id6770474297)

A strategy-based puzzle game where players move colorful blocks between columns to organize them by color. It offers hundreds of handcrafted logic puzzles with simple mechanics that become challenging to master.

**Highlights:** Unique color stacking gameplay, Organize blocks by color, Hundreds of logic puzzles, Easy to learn, challenging to master, Smooth animations and satisfying interactions, Discover new mechanics

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $0.99 | one-time |
| 1000 Coins | $1.99 | one-time |
| Star Bundle | $4.99 | one-time |
| No Ads | $7.99 | one-time |
| Super Bundle | $9.99 | one-time |
| Mega Bundle | $19.99 | one-time |
| Giant Bundle | $49.99 | one-time |
| 50000 Coins | $59.99 | one-time |
| 100000 Coins | $89.99 | one-time |
| Ultimate Bundle | $99.99 | one-time |


### Unwound Block

[App page](https://appshunter.io/ios/app/unwound-block-logic-puzzle/id6791304547)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 Coins | $0.99 | one-time |
| 5000 Coins | $3.99 | one-time |
| No Ads Offer | $4.99 | one-time |
| 10000 Coins | $6.99 | one-time |
| 25000 Coins | $14.99 | one-time |


## Frequently asked questions

### Is Stack Star free?

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

### Is Unwound Block free?

Unwound Block is free to download, with in-app purchases available.

### Do Stack Star or Unwound Block have ads?

Stack Star shows ads; Unwound Block does not.

### Which is updated more often, Stack Star or Unwound Block?

Stack Star ships an update every 9 days, and Unwound Block every 5 days. Most recently, Stack Star was updated on November 13, 2026 and Unwound Block on November 10, 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.*