# Flux vs Onus Strength

The clearest difference is iOS requirement: Onus Strength at 17.0 against Flux's 26.2. On price, ads, in-app purchases 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 and Onus Strength sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Flux | Onus Strength |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Freemium | — |
| Size | 47 MB | 9 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Digital Flux Ltd](https://appshunter.io/developer/1873322568) | [Nathaniel Faiad](https://appshunter.io/developer/6804785348) |

## 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 |


### Onus Strength

[App page](https://appshunter.io/ios/app/onus-strength/id6804785346)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Unlock | $19.99 | one-time |


## Frequently asked questions

### Is Flux free?

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

### Is Onus Strength free?

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

### Do Flux or Onus Strength have ads?

Neither Flux nor Onus Strength shows ads.

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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.*