# I am Not a Robot vs Gravity Blocks 3D

The clearest difference is in-app purchases: Gravity Blocks 3D at none against I am Not a Robot's 8. Gravity Blocks 3D also leads on update cadence (every 2 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. I am Not a Robot sells 8 one-off in-app purchases. Gravity Blocks 3D asks for nothing beyond the download.

I am Not a Robot ships an update every 2 weeks, Gravity Blocks 3D every 2 days. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | I am Not a Robot | Gravity Blocks 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.5K ratings)](https://appshunter.io/ios/app/i-am-not-a-robot-brain-test/id6751884210/reviews)** | — |
| Number of ratings | **1.5K** | — |
| Positive reviews | 35.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 267 MB | 267 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [SayGames LTD](https://appshunter.io/developer/1551847165) | [Ahmed Salim](https://appshunter.io/developer/6782794001) |

## What reviewers say

### I am Not a Robot

[App page](https://appshunter.io/ios/app/i-am-not-a-robot-brain-test/id6751884210)

Engage in a variety of logic puzzles and brain teasers designed to test your cognitive skills. Prove you're human by solving diverse challenges, from spotting differences to tile placement, all within a fun and mentally stimulating environment.

**Highlights:** Variety of puzzle types, Hundreds of levels, Logic games, Brain teasers, Memory games, Concentration games

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hints 1 | $2.99 | one-time |
| No ADS | $4.99 | one-time |
| Hints 2 | $4.99 | one-time |
| Time Stop 1 | $4.99 | one-time |
| Time Stop 2 | $4.99 | one-time |
| Promotion | $7.99 | one-time |
| Hints 3 | $11.99 | one-time |
| Time Stop 3 | $11.99 | one-time |


### Gravity Blocks 3D

[App page](https://appshunter.io/ios/app/gravity-blocks-3d/id6792556521)

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

**In-app purchases:** none


## Frequently asked questions

### Is I am Not a Robot free?

I am Not a Robot is free to download, with in-app purchases available.

### Is Gravity Blocks 3D free?

Gravity Blocks 3D is free to download, with no in-app purchases.

### Do I am Not a Robot or Gravity Blocks 3D have ads?

Both I am Not a Robot and Gravity Blocks 3D show ads.

### Which is updated more often, I am Not a Robot or Gravity Blocks 3D?

I am Not a Robot ships an update every 2 weeks, and Gravity Blocks 3D every 2 days. Most recently, I am Not a Robot was updated on October 20, 2026 and Gravity Blocks 3D on October 12, 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.*