# Stranger Fields vs Math Brain Challenge

The clearest difference is in-app purchases: Stranger Fields at none against Math Brain Challenge's 3. Stranger Fields also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Math Brain Challenge's advantage is update cadence (weekly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Math Brain Challenge sells 3 in-app purchases, starting at $0.99 per month. Stranger Fields asks for nothing beyond the download.

Stranger Fields ships an update every 3 months, Math Brain Challenge weekly. The most recent releases landed on September 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Stranger Fields | Math Brain Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Size | 259 MB | 60 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Games for Citizens](https://appshunter.io/developer/1573438126) | [Sefik Cevik](https://appshunter.io/developer/1539363112) |

## What reviewers say

### Stranger Fields

[App page](https://appshunter.io/ios/app/stranger-fields/id1413785721)

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

**In-app purchases:** none


### Math Brain Challenge

[App page](https://appshunter.io/ios/app/math-brain-challenge/id6753904419)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per month |
| Premium Access | $9.99 | per year |
| Premium - Lifetime Access | $19.99 | one-time |


## Frequently asked questions

### Is Stranger Fields free?

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

### Is Math Brain Challenge free?

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

### Do Stranger Fields or Math Brain Challenge have ads?

Math Brain Challenge shows ads; Stranger Fields does not.

### Which is updated more often, Stranger Fields or Math Brain Challenge?

Stranger Fields ships an update every 3 months, and Math Brain Challenge weekly. Most recently, Stranger Fields was updated on September 17, 2026 and Math Brain Challenge on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*