# FFMI Calc — Muscle Index Calc

> Muscle Index Calc (iPhone/iPad app by Tomoharu Iseki.)

- Source: https://appshunter.io/ios/app/ffmi-calc/id6768256805 (this page in markdown: same URL + `.md`)
- Developer: [Tomoharu Iseki](https://appshunter.io/developer/1863683948)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 26.4 · 1 MB
- Languages: American English
- Released: 2026-05-12
- Data updated: 2026-08-03
- User reviews in markdown: https://appshunter.io/ios/app/ffmi-calc/id6768256805/reviews.md

## What is FFMI Calc?

■ Main Features
Instant FFMI & Normalized FFMI Calculation
Simply enter your height, weight, and body fat percentage to instantly calculate your Fat-Free Mass Index (FFMI) and "Normalized FFMI," which adjusts for height differences to ensure a fair evaluation.
[NEW] Target FFMI Reverse Simulator
"What changes do I need to make to reach a Normalized FFMI of 22?"
Just set your target value, and the app automatically generates a "Body Fat % and Target Weight combination list" based on your height. It strongly supports your specific goal setting, from bulking up to cutting, by factoring in body fat fluctuations.
Classification Rank Display
Based on your calculated values, it provides intuitive feedback on where your muscle mass ranks, from below average up to the "God-like" level.
Global Support
Full compatibility with both Metric (cm/kg) and Imperial (ft/lbs) systems. It also supports multiple languages (Japanese, English, Korean, Traditional Chinese, and German).


## Version history (last 5 releases)

### 1.1.2 — 2026-07-31

Optimized the UI display.

### 1.1.1 — 2026-06-15

Optimized the UI display.

### 1.1.0 — 2026-05-25

Optimized the iPad display.

### 1.0.2 — 2026-05-15

Minor bug fixes and performance improvements.

### 1.0.1 — 2026-05-13

Minor bug fixes and performance improvements.

## Apps similar to FFMI Calc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [FFMI Calc - Muscle Potential](https://appshunter.io/ios/app/ffmi-calc-muscle-potential/id6760226439) | — | Free | Health & Fitness |
| [BYLD: Workout Tracker](https://appshunter.io/ios/app/byld-workout-tracker/id6759444916) | — | Free | Health & Fitness |
| [PumpRex — Gym Workout Tracker](https://appshunter.io/ios/app/pumprex-gym-workout-tracker/id6759879756) | — | Free | Health & Fitness |
| [FFMI](https://appshunter.io/ios/app/ffmi/id6673907322) | — | Free | Health & Fitness |
| [つみ筋 - 筋トレ＆食事RPG](https://appshunter.io/ios/app/rpg/id6757642776) | — | Free | Health & Fitness |
| [Body Measurement Tracker & BMI](https://appshunter.io/ios/app/body-measurement-tracker-and-bmi/id6757112288) | — | Free | Health & Fitness |

## More apps by Tomoharu Iseki

- [FFMI Analyzer](https://appshunter.io/ios/app/ffmi-analyzer/id6756921982)
- [Workout Analyzer - Fit Tracker](https://appshunter.io/ios/app/workout-analyzer-fit-tracker/id6767075465)

All apps by Tomoharu Iseki: https://appshunter.io/developer/1863683948

## Related topics

[ffmi calc](https://appshunter.io/ios/topics/ffmi-calc) · [ffmi](https://appshunter.io/ios/topics/ffmi)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-03.*