# Liftosaur vs RPE 8 (slowdown tracker)

The clearest difference is in-app purchases: RPE 8 (slowdown tracker) at none against Liftosaur's 3. RPE 8 (slowdown tracker) also leads on iOS requirement (15.6 vs 17.0). Liftosaur's advantage is update cadence (every 6 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Liftosaur sells 3 in-app purchases, starting at $4.99 per month. RPE 8 (slowdown tracker) asks for nothing beyond the download.

Liftosaur ships an update every 6 days, RPE 8 (slowdown tracker) fortnightly. The most recent releases landed on September 25, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Liftosaur | RPE 8 (slowdown tracker) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (394 ratings)](https://appshunter.io/ios/app/liftosaur-scriptable-workouts/id1661880849/reviews)** | — |
| Number of ratings | **394** | — |
| Positive reviews | 89.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 66 MB | 1 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Liftosaur, LLC](https://appshunter.io/developer/1712548690) | [德凯 郝](https://appshunter.io/developer/6791808408) |

## 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


### RPE 8 (slowdown tracker)

[App page](https://appshunter.io/ios/app/rpe-8-slowdown-tracker/id6793735413)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Liftosaur free?

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

### Is RPE 8 (slowdown tracker) free?

RPE 8 (slowdown tracker) is free to download, with no in-app purchases.

### Do Liftosaur or RPE 8 (slowdown tracker) have ads?

Neither Liftosaur nor RPE 8 (slowdown tracker) shows ads.

### Which is updated more often, Liftosaur or RPE 8 (slowdown tracker)?

Liftosaur ships an update every 6 days, and RPE 8 (slowdown tracker) fortnightly. Most recently, Liftosaur was updated on September 25, 2026 and RPE 8 (slowdown tracker) 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.*