FFMI vs FFMI Calc
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
FFMI
Read full descriptionHide full description
Calculate and keep track of your Fat Free Mass Index (FFMI). Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
FFMI Calc
Read full descriptionHide full description
Calculate your Fat-Free Mass Index (FFMI) and discover your genetic muscle potential with scientific precision. FFMI Calc uses the normalized FFMI formula with gender adjustment and Casey Butt's 4th edition model to estimate your maximum lean mass based on your bone structure. Features: ā¢ FFMI & normalized FFMI calculation with gender correction ā¢ Casey Butt genetic maximum potential estimation ā¢ Body part comparison (chest, arms, legs, etc.) vs. genetic limits ā¢ Detailed PDF report with methodology ā¢ History tracking with PDF export ā¢ Supports metric (kg/cm) and imperial (lbs/in) units ā¢ Available in English, Finnish, and Spanish All calculations run locally on your device. No account required. No data collected. https://www.pumprex.com/ffmi-terms-of-service/ https://www.pumprex.com/ffmi-privacy-policy/
Screenshots
Verdict
The clearest difference is in-app purchases: FFMI Calc at none against FFMI's 1. FFMI Calc also leads on update cadence (every 4 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. FFMI sells 1 in-app purchase, starting at $0.99 per year. FFMI Calc asks for nothing beyond the download.
FFMI ships an update every 3 months, FFMI Calc every 4 weeks. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.
| Parameter | FFMI | FFMI Calc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 4 weeks ā better |
| Ads | No | No |
| In-app purchases | Yes | No ā better |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 ā better | 17.0 |
| Further details ā not scored | ||
| Size | 6 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Almudena Blanco Morett | JARI TOIVIAINEN |
In-app purchases
FFMI
- Full Year Access$0.991 Year
FFMI Calc
No in-app purchases
