# Rescue Sort vs Block Stack

The clearest difference is in-app purchases: Rescue Sort at none against Block Stack's 1. Rescue Sort also leads on iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Block Stack sells 1 one-off in-app purchase. Rescue Sort asks for nothing beyond the download.

## The numbers

| Metric | Rescue Sort | Block Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 4 days |
| Size | 106 MB | 204 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Yavuz OZSOY](https://appshunter.io/developer/1654687636) | [Wodh LTD](https://appshunter.io/developer/1878638321) |

## What reviewers say

### Rescue Sort

[App page](https://appshunter.io/ios/app/rescue-sort/id6785990327)

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

**In-app purchases:** none


### Block Stack

[App page](https://appshunter.io/ios/app/block-stack-color-sort-puzzle/id6815547548)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Rescue Sort free?

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

### Is Block Stack free?

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

### Do Rescue Sort or Block Stack have ads?

Both Rescue Sort and Block Stack show ads.

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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.*