# RoboFit vs Lean · 薄肌

The clearest difference is update cadence: RoboFit at every 4 days against Lean · 薄肌's every 3 weeks. Lean · 薄肌's advantage is iOS requirement (18.0 vs 26.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. RoboFit sells 2 in-app purchases, starting at $6.99 per month and Lean · 薄肌 sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

RoboFit ships an update every 4 days, Lean · 薄肌 every 3 weeks. The most recent releases landed on October 28, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | RoboFit | Lean · 薄肌 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 55 MB | 37 MB |
| Requires iOS | 26.1 | **18.0** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Jipai Tech](https://appshunter.io/developer/1874857700) | [海圆 马](https://appshunter.io/developer/1896405198) |

## What reviewers say

### RoboFit

[App page](https://appshunter.io/ios/app/robofit-food-and-workout-log/id6758762443)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoboFit Pro Monthly | $6.99 | per month |
| RoboFit Pro Yearly | $49.99 | per year |


### Lean · 薄肌

[App page](https://appshunter.io/ios/app/lean/id6767283263)

This app is an AI-powered strength training journal that tracks your workouts, provides post-session coaching, and visualizes your progress. It offers built-in programs, custom plan creation, and AI-assisted planning based on your goals and equipment.

**Highlights:** AI-assisted workout planning, Voice and text workout logging, Post-workout AI debriefs, Set-by-set logging with PR detection, Apple Watch standalone app, HealthKit integration, 3D muscle heatmap visualization

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LumaFit Pro Monthly | $8.99 | per month |
| LumaFit Pro Yearly | $59.99 | per year |


## Frequently asked questions

### Is RoboFit free?

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

### Is Lean · 薄肌 free?

Lean · 薄肌 is free to download, with in-app purchases available.

### Do RoboFit or Lean · 薄肌 have ads?

Neither RoboFit nor Lean · 薄肌 shows ads.

### Which is updated more often, RoboFit or Lean · 薄肌?

RoboFit ships an update every 4 days, and Lean · 薄肌 every 3 weeks. Most recently, RoboFit was updated on October 28, 2026 and Lean · 薄肌 on October 22, 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.*