# Enigma vs Critter Blocks

The clearest difference is ads: Enigma at none against Critter Blocks's shown. Critter Blocks's advantage is update cadence (every 6 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Enigma ships an update every 3 months, Critter Blocks every 6 days. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Enigma | Critter Blocks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 6 days** |
| Size | 466 MB | 49 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Corey Clark](https://appshunter.io/developer/1578949040) | [Chung Wang](https://appshunter.io/developer/1798123298) |

## What reviewers say

### Enigma

[App page](https://appshunter.io/ios/app/enigma-essentials-i/id6504303873)

**Features:** macOS Compatibility

**In-app purchases:** none


### Critter Blocks

[App page](https://appshunter.io/ios/app/critter-blocks/id6743764263)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Enigma free?

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

### Is Critter Blocks free?

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

### Do Enigma or Critter Blocks have ads?

Critter Blocks shows ads; Enigma does not.

### Which is updated more often, Enigma or Critter Blocks?

Enigma ships an update every 3 months, and Critter Blocks every 6 days. Most recently, Enigma was updated on October 25, 2026 and Critter Blocks on October 9, 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.*