# Heptrix 3D vs Brain Blocks Challenge

The clearest difference is in-app purchases: Heptrix 3D at none against Brain Blocks Challenge's 1. Brain Blocks Challenge's advantage is ads (none vs shown) and update cadence (every 7 months vs every 19 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Brain Blocks Challenge sells 1 one-off in-app purchase. Heptrix 3D asks for nothing beyond the download.

Heptrix 3D ships an update every 19 months, Brain Blocks Challenge every 7 months. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Heptrix 3D | Brain Blocks Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Every 7 months** |
| Size | 74 MB | 68 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jose Varela](https://appshunter.io/developer/336500035) | [Botan Sahin](https://appshunter.io/developer/1593059777) |

## What reviewers say

### Heptrix 3D

[App page](https://appshunter.io/ios/app/heptrix-3d-ads/id919644015)

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

**In-app purchases:** none


### Brain Blocks Challenge

[App page](https://appshunter.io/ios/app/brain-blocks-challenge/id1671997951)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Heptrix 3D free?

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

### Is Brain Blocks Challenge free?

Brain Blocks Challenge is free to download, with in-app purchases available.

### Do Heptrix 3D or Brain Blocks Challenge have ads?

Heptrix 3D shows ads; Brain Blocks Challenge does not.

### Which is updated more often, Heptrix 3D or Brain Blocks Challenge?

Heptrix 3D ships an update every 19 months, and Brain Blocks Challenge every 7 months. Most recently, Heptrix 3D was updated on October 24, 2026 and Brain Blocks Challenge on October 19, 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.*