# Blocks Challenge vs Sirret Terris Reversed

The clearest difference is update cadence: Blocks Challenge at every 5 weeks against Sirret Terris Reversed's every 5 months. Sirret Terris Reversed's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

Blocks Challenge ships an update every 5 weeks, Sirret Terris Reversed every 5 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Blocks Challenge | Sirret Terris Reversed |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Size | 82 MB | 138 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Daniela Baillo](https://appshunter.io/developer/1733437806) | [Huynh Ngan](https://appshunter.io/developer/1826748443) |

## What reviewers say

### Blocks Challenge

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

**In-app purchases:** none


### Sirret Terris Reversed

[App page](https://appshunter.io/ios/app/sirret-terris-reversed/id6748639376)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Blocks Challenge free?

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

### Is Sirret Terris Reversed free?

Sirret Terris Reversed is free to download, with no in-app purchases.

### Do Blocks Challenge or Sirret Terris Reversed have ads?

Neither Blocks Challenge nor Sirret Terris Reversed shows ads.

### Which is updated more often, Blocks Challenge or Sirret Terris Reversed?

Blocks Challenge ships an update every 5 weeks, and Sirret Terris Reversed every 5 months. Most recently, Blocks Challenge was updated on October 25, 2026 and Sirret Terris Reversed on October 25, 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.*