# PAAT vs Euler Gamma

The clearest difference is iOS requirement: PAAT at 13.0 against Euler Gamma's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

PAAT ships an update every 3 weeks, Euler Gamma every 9 days. The most recent releases landed on September 25, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | PAAT | Euler Gamma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 11 MB | 14 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IAEA](https://appshunter.io/developer/535500126) | [音 卢](https://appshunter.io/developer/1895433682) |

## What reviewers say

### PAAT

[App page](https://appshunter.io/ios/app/paat-iaea/id6470376172)

**In-app purchases:** none


### Euler Gamma

[App page](https://appshunter.io/ios/app/euler-gamma-ndt-calculator/id6772123721)

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

**In-app purchases:** none


## Frequently asked questions

### Is PAAT free?

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

### Is Euler Gamma free?

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

### Do PAAT or Euler Gamma have ads?

Neither PAAT nor Euler Gamma shows ads.

### Which is updated more often, PAAT or Euler Gamma?

PAAT ships an update every 3 weeks, and Euler Gamma every 9 days. Most recently, PAAT was updated on September 25, 2026 and Euler Gamma on September 9, 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.*