# Infected vs Math Sprint Challenge

The clearest difference is update cadence: Math Sprint Challenge at weekly against Infected's every 14 months. Infected's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Infected ships an update every 14 months, Math Sprint Challenge weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Infected | Math Sprint Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 14 months | **Weekly** |
| Size | 139 MB | 21 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [TwinRayj Studios](https://appshunter.io/developer/1420348312) | [Henrique Pedro](https://appshunter.io/developer/1708462258) |

## What reviewers say

### Infected

[App page](https://appshunter.io/ios/app/infected-join-us/id1583996297)

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Sprint Challenge

[App page](https://appshunter.io/ios/app/math-sprint-challenge/id6758415290)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Infected free?

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

### Is Math Sprint Challenge free?

Math Sprint Challenge is free to download, with no in-app purchases.

### Do Infected or Math Sprint Challenge have ads?

Both Infected and Math Sprint Challenge show ads.

### Which is updated more often, Infected or Math Sprint Challenge?

Infected ships an update every 14 months, and Math Sprint Challenge weekly. Most recently, Infected was updated on November 7, 2026 and Math Sprint Challenge on October 31, 2026.

---

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