# Drowning Math vs Addition Algorithm

The clearest difference is ads: Addition Algorithm at none against Drowning Math's shown. Addition Algorithm also leads on update cadence (every 6 days vs every 19 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Drowning Math ships an update every 19 months, Addition Algorithm every 6 days. The most recent releases landed on September 12, 2026 and May 31, 2026 respectively.

## The numbers

| Metric | Drowning Math | Addition Algorithm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Every 6 days** |
| Size | 71 MB | 56 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Brothapps, SL](https://appshunter.io/developer/1126030162) | [JASON A RIGBY](https://appshunter.io/developer/1811566397) |

## 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


### Addition Algorithm

[App page](https://appshunter.io/ios/app/addition-algorithm/id6760708208)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Drowning Math free?

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

### Is Addition Algorithm free?

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

### Do Drowning Math or Addition Algorithm have ads?

Drowning Math shows ads; Addition Algorithm does not.

### Which is updated more often, Drowning Math or Addition Algorithm?

Drowning Math ships an update every 19 months, and Addition Algorithm every 6 days. Most recently, Drowning Math was updated on September 12, 2026 and Addition Algorithm on May 31, 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.*