# Brain Challenge vs US Constitution Guide

The clearest difference is in-app purchases: US Constitution Guide at none against Brain Challenge's 2. US Constitution Guide also leads on update cadence (every 6 weeks vs every 7 months). Brain Challenge's advantage is ads (none vs shown) and iOS requirement (15.0 vs 26.5). On price and device support there is nothing between them.

Both are free to download. Brain Challenge sells 2 in-app purchases, starting at $1.99 per month. US Constitution Guide asks for nothing beyond the download.

Brain Challenge ships an update every 7 months, US Constitution Guide every 6 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Brain Challenge | US Constitution Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Size | 30 MB | 7 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BIG DREAMS GROUP](https://appshunter.io/developer/1684759638) | [Yeferson Jimenez Sevilla](https://appshunter.io/developer/1889049374) |

## What reviewers say

### Brain Challenge

[App page](https://appshunter.io/ios/app/brain-challenge-iq-test/id6759228276)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Challenge App - Premium | $1.99 | per month |
| Single certificate-Brain Challenge | $0.99 | one-time |


### US Constitution Guide

[App page](https://appshunter.io/ios/app/us-constitution-guide/id6780650729)

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

**In-app purchases:** none


## Frequently asked questions

### Is Brain Challenge free?

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

### Is US Constitution Guide free?

US Constitution Guide is free to download, with no in-app purchases.

### Do Brain Challenge or US Constitution Guide have ads?

US Constitution Guide shows ads; Brain Challenge does not.

### Which is updated more often, Brain Challenge or US Constitution Guide?

Brain Challenge ships an update every 7 months, and US Constitution Guide every 6 weeks. Most recently, Brain Challenge was updated on October 3, 2026 and US Constitution Guide on October 8, 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.*