# Flux vs CoachOS

The clearest difference is in-app purchases: CoachOS at none against Flux's 4. CoachOS also leads on iOS requirement (16.2 vs 26.2). Flux's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Flux sells 4 in-app purchases, starting at $2.99 per month. CoachOS asks for nothing beyond the download.

Flux ships an update weekly, CoachOS every 3 weeks. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Flux | CoachOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flux-workout-tracker/id6758521633/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 48 MB | 76 MB |
| Requires iOS | 26.2 | **16.2** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Digital Flux Ltd](https://appshunter.io/developer/1873322568) | [CoachOS Ltd](https://appshunter.io/developer/1883390017) |

## What reviewers say

### Flux

[App page](https://appshunter.io/ios/app/flux-workout-tracker/id6758521633)

This app helps you train smarter by generating personalized workouts based on your goals, available equipment, and time. It uniquely adapts to your progress over time, keeping all your data on your device for privacy. Track every set, rep, and weight with ease, and benefit from advanced features like progressive overload and fatigue-aware training.

**Highlights:** Personalized workout generation, Customizable routines and exercises, Real-time adaptive changes, Progressive overload and periodisation, Fatigue-aware training support, Apple Health integration, Data export

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flux Pro : 1 Month | $2.99 | per month |
| Flux Pro : 12 Month | $19.99 | per year |
| Flux Pro : Lifetime Pass - Founder | $49.99 | one-time |
| Flux Pro : Lifetime Pass | $59.99 | one-time |


### CoachOS

[App page](https://appshunter.io/ios/app/coachos-client-training-app/id6760235660)

**In-app purchases:** none


## Frequently asked questions

### Is Flux free?

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

### Is CoachOS free?

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

### Do Flux or CoachOS have ads?

Neither Flux nor CoachOS shows ads.

### Which is updated more often, Flux or CoachOS?

Flux ships an update weekly, and CoachOS every 3 weeks. Most recently, Flux was updated on September 17, 2026 and CoachOS on September 13, 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.*