# Personal Trainer Exam Prep App vs Extended Euclidian Algorithm

The clearest difference is update cadence: Extended Euclidian Algorithm at every 3 months against Personal Trainer Exam Prep App's every 42 months. Extended Euclidian Algorithm also leads on price ($0.99 vs $3.99). Personal Trainer Exam Prep App's advantage is iOS requirement (12.4 vs 14.0). On ads, in-app purchases and device support there is nothing between them.

Personal Trainer Exam Prep App costs $3.99 and Extended Euclidian Algorithm $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Personal Trainer Exam Prep App ships an update every 42 months, Extended Euclidian Algorithm every 3 months. The most recent releases landed on September 8, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Personal Trainer Exam Prep App | Extended Euclidian Algorithm |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 3 months** |
| Size | 11 MB | 1 MB |
| Requires iOS | **12.4** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Tourkia CHIHI](https://appshunter.io/developer/1105976811) | [Gustav Gutsche](https://appshunter.io/developer/1661525357) |

## What reviewers say

### Personal Trainer Exam Prep App

[App page](https://appshunter.io/ios/app/personal-trainer-exam-prep-app/id1209899939)

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

**In-app purchases:** none


### Extended Euclidian Algorithm

[App page](https://appshunter.io/ios/app/extended-euclidian-algorithm/id1671229466)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Personal Trainer Exam Prep App free?

Personal Trainer Exam Prep App costs $3.99, with no in-app purchases.

### Is Extended Euclidian Algorithm free?

Extended Euclidian Algorithm costs $0.99, with no in-app purchases.

### Do Personal Trainer Exam Prep App or Extended Euclidian Algorithm have ads?

Neither Personal Trainer Exam Prep App nor Extended Euclidian Algorithm shows ads.

### Which is updated more often, Personal Trainer Exam Prep App or Extended Euclidian Algorithm?

Personal Trainer Exam Prep App ships an update every 42 months, and Extended Euclidian Algorithm every 3 months. Most recently, Personal Trainer Exam Prep App was updated on September 8, 2026 and Extended Euclidian Algorithm on May 17, 2026.

---

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