# Drowning Math vs π Pi Challenge

The clearest difference is in-app purchases: Drowning Math at none against π Pi Challenge's 1. Drowning Math also leads on ads (none vs shown) and update cadence (every 5 days vs every 2 months). π Pi Challenge's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price there is nothing between them.

Both are free to download. π Pi Challenge sells 1 in-app purchase, starting at $0.99 per month. Drowning Math asks for nothing beyond the download.

Drowning Math ships an update every 5 days, π Pi Challenge every 2 months. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Drowning Math | π Pi Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 67 MB | 73 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brothapps, SL](https://appshunter.io/developer/1126030162) | [SIC Company Limited](https://appshunter.io/developer/1800842356) |

## What reviewers say

### Drowning Math

[App page](https://appshunter.io/ios/app/drowning-math-mental-math/id6450683721)

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

**In-app purchases:** none


### π Pi Challenge

[App page](https://appshunter.io/ios/app/pi-challenge/id6756227034)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |


## Frequently asked questions

### Is Drowning Math free?

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

### Is π Pi Challenge free?

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

### Do Drowning Math or π Pi Challenge have ads?

π Pi Challenge shows ads; Drowning Math does not.

### Which is updated more often, Drowning Math or π Pi Challenge?

Drowning Math ships an update every 5 days, and π Pi Challenge every 2 months. Most recently, Drowning Math was updated on October 16, 2026 and π Pi Challenge on October 5, 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.*