# Blocks Challenge vs Compatibility Test

The clearest difference is in-app purchases: Blocks Challenge at none against Compatibility Test's 2. Compatibility Test's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Compatibility Test sells 2 in-app purchases, starting at $5.99 per 7 days. Blocks Challenge asks for nothing beyond the download.

Blocks Challenge ships an update every 5 weeks, Compatibility Test every 2 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Blocks Challenge | Compatibility Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Size | 82 MB | 42 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Daniela Baillo](https://appshunter.io/developer/1733437806) | [Andrii Kulchytskyi](https://appshunter.io/developer/1759867572) |

## What reviewers say

### Blocks Challenge

[App page](https://appshunter.io/ios/app/blocks-challenge/id6478589080)

**In-app purchases:** none


### Compatibility Test

[App page](https://appshunter.io/ios/app/compatibility-test-crush-test/id6744529794)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Couples Crush Zodiac Test | $5.99 | per 7 days |
| Numerology compatibility check | $19.99 | per year |


## Frequently asked questions

### Is Blocks Challenge free?

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

### Is Compatibility Test free?

Compatibility Test is free to download, with in-app purchases available.

### Do Blocks Challenge or Compatibility Test have ads?

Neither Blocks Challenge nor Compatibility Test shows ads.

### Which is updated more often, Blocks Challenge or Compatibility Test?

Blocks Challenge ships an update every 5 weeks, and Compatibility Test every 2 months. Most recently, Blocks Challenge was updated on October 6, 2026 and Compatibility Test on October 15, 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.*