# Union Three vs FitML

The clearest difference is in-app purchases: Union Three at none against FitML's 2. Union Three also leads on ratings volume (259 vs 3). FitML's advantage is device support (3 vs 1). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. FitML sells 2 in-app purchases, starting at $4.99 per month. Union Three asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Union Three against 5.0 for FitML. That said, the two scores are not equally well evidenced: Union Three has 259 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Union Three ships an update every 3 weeks, FitML every 4 weeks. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Union Three | FitML |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (259 ratings)](https://appshunter.io/ios/app/union-three/id1477343238/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/fitml-workout-tracker/id6746139404/reviews) |
| Number of ratings | **259** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | **Ad-supported** | Freemium |
| Size | 38 MB | 46 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Mariana Tek Corporation](https://appshunter.io/developer/1178746980) | [Drew Taylor](https://appshunter.io/developer/1815393850) |

## What reviewers say

### Union Three

[App page](https://appshunter.io/ios/app/union-three/id1477343238)

This app provides a platform for managing your fitness profile and booking classes. It fosters a supportive community focused on self-acceptance and personal growth through various fitness activities.

**Highlights:** Profile management, Class booking, Class reservations, Community connection, Fitness transformation

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

**In-app purchases:** none


### FitML

[App page](https://appshunter.io/ios/app/fitml-workout-tracker/id6746139404)

This app helps you track your fitness journey with detailed data, charts, and graphs. It offers AI-powered workout generation, exercise logging, and personalized progress insights to help you achieve your goals.

**Highlights:** AI-powered workout generation, Detailed exercise logging (sets, weights, reps, distance), Hundreds of charts, stats, and graphs, Personalized progress insights and suggestions, Goal setting and progress tracking, Exercise database with instructional videos, Routine building and management

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FitML Pro Monthly | $4.99 | per month |
| FitML Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Union Three free?

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

### Is FitML free?

FitML is free to download, with in-app purchases available.

### Which has better reviews, Union Three or FitML?

Union Three and FitML are both rated 5.0 out of 5 on the App Store, from 259 and 3 ratings respectively.

### Do Union Three or FitML have ads?

Neither Union Three nor FitML shows ads.

### Which is updated more often, Union Three or FitML?

Union Three ships an update every 3 weeks, and FitML every 4 weeks. Most recently, Union Three was updated on October 10, 2026 and FitML on October 1, 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.*