# Flux vs MacroStack AI

The clearest difference is monetization model: Flux at freemium against MacroStack AI's subscription. Flux also leads on update cadence (weekly vs every 2 weeks). MacroStack AI's advantage is iOS requirement (17.0 vs 26.2). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Flux sells 4 in-app purchases, starting at $2.99 per month and MacroStack AI sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Flux against 5.0 for MacroStack AI. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Flux ships an update weekly, MacroStack AI every 2 weeks. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Flux | MacroStack AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/flux-workout-tracker/id6758521633/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/macrostack-ai-macro-tracker/id6760374803/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | **Freemium** | Subscription |
| Size | 47 MB | 68 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Digital Flux Ltd](https://appshunter.io/developer/1873322568) | [Rexhep Rexhepi](https://appshunter.io/developer/1882562698) |

## 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 |


### MacroStack AI

[App page](https://appshunter.io/ios/app/macrostack-ai-macro-tracker/id6760374803)

This app uses your logged food and weigh-ins to adaptively adjust your calorie and macro goals weekly. It reveals your body's actual calorie burn and forecasts your progress, offering personalized insights and meal suggestions.

**Highlights:** Adaptive calorie goal recalibration, Revealed TDEE calculation, Weekly goal adjustments with explanations, Offline food database with barcode scanner, AI food scanner for unlabeled items, AI nutrition coach for meal suggestions, Optional fasting timer

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MacroStack Monthly | $3.99 | per month |
| MacroStack Annual | $34.99 | per year |
| MacroStack Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Flux free?

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

### Is MacroStack AI free?

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

### Which has better reviews, Flux or MacroStack AI?

Flux and MacroStack AI are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Flux or MacroStack AI have ads?

Neither Flux nor MacroStack AI shows ads.

### Which is updated more often, Flux or MacroStack AI?

Flux ships an update weekly, and MacroStack AI every 2 weeks. Most recently, Flux was updated on October 4, 2026 and MacroStack AI on October 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.*