# Liftosaur vs Flux

The clearest difference is ratings volume: Liftosaur at 420 against Flux's 1. Liftosaur also leads on device support (3 vs 1) and iOS requirement (17.0 vs 26.2). Flux's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 90%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Liftosaur sells 3 in-app purchases, starting at $4.99 per month and Flux sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Flux holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Liftosaur has 420 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 90% of Liftosaur's written reviews are positive against 100% of Flux's.

Liftosaur ships an update every 6 days, Flux weekly. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Liftosaur | Flux |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (420 ratings)](https://appshunter.io/ios/app/liftosaur-scriptable-workouts/id1661880849/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flux-workout-tracker/id6758521633/reviews)** |
| Number of ratings | **420** | 1 |
| Positive reviews | 89.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | Free with in-app purchases | Freemium |
| Size | 64 MB | 47 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Liftosaur, LLC](https://appshunter.io/developer/1712548690) | [Digital Flux Ltd](https://appshunter.io/developer/1873322568) |

## What reviewers say

### Liftosaur

[App page](https://appshunter.io/ios/app/liftosaur-scriptable-workouts/id1661880849)

This app automates strength training by allowing users to build custom progressive overload programs or use pre-built routines. It tracks workouts, visualizes progress, and automatically adjusts weights and reps based on user-defined logic, making it a smart fitness companion.

**Highlights:** Automated progressive overload, Scriptable workout builder (Liftoscript), Pre-built popular lifting programs, Workout tracking and progress visualization, Rest timers and plate calculator, Body weight and measurement tracking, Cloud backup and cross-device sync

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $39.99 | per year |
| Lifetime Subscription | $99.99 | one-time |

**What reviewers like**

- ✨ Highly customizable workouts
- 🚀 Efficient workout tracking
- 💡 Innovative Liftoscript feature
- 💰 Incredible value (lifetime subscription)
- 🤝 Excellent developer support

**What reviewers complain about**

- 📚 Steep learning curve
- 🐛 Frequent app crashes due to updates
- 🔄 Sync issues with Apple Health
- 🐌 UI could use a polish
- 🤔 Some users find it too technical

**Reported bugs**

- App crashes frequently after updates
- Syncing issues with iPhone Health app
- App freezes on startup screen, requires reinstallation
- Changes to program not saving correctly
- Error when trying to set different warm-ups for different weeks

**Requested features**

- Dark mode option
- Ability to use kgs for barbell and lbs for dumbbells
- More intuitive UI for beginners
- Improved documentation/organization of ideas


### 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 |


## Frequently asked questions

### Is Liftosaur free?

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

### Is Flux free?

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

### Which has better reviews, Liftosaur or Flux?

Flux is rated higher. Liftosaur averages 4.8 out of 5 from 420 ratings, while Flux averages 5.0 from 1 ratings.

### Do Liftosaur or Flux have ads?

Neither Liftosaur nor Flux shows ads.

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

Liftosaur ships an update every 6 days, and Flux weekly. Most recently, Liftosaur was updated on October 17, 2026 and Flux on October 4, 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.*