Comparison

PumpRex vs FFMI Calc

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

PumpRex

Features
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PumpRex is a training app that gets straight to the point. No sign-ups, no email prompts, no ads. Download and start training. PROGRAMMED TRAINING Build your own training programs from scratch or pick from ready-made templates. Set exercises, sets, reps and weights for each day. Adjust freely as you progress. Templates included: - Push/Pull/Legs (3-6 days) - Upper/Lower (4 days) - Full Body (3 days) - And many more SMART PROGRESSION The app tracks your performance and suggests when to increase weight. Linear progression, double progression and RPE-based tracking built in. You decide โ€” the app advises. PRECISE LOGGING Log every set during your workout. Weight, reps, RPE, RIR and technique โ€” everything saves automatically. See your previous results right in the logging view. RPE & RIR Intensity tracking is built in. The app calculates when it's time to back off and suggests deloads based on your training data and mesocycle. ANALYTICS Track your progress with clear charts. Volume, tonnage, PRs and trends โ€” view by week, month or full history. BODY TRACKING Log weight, body fat and muscle mass. Take body measurements. Capture progress photos and compare your development over time. Export your data as PDF. iCLOUD SYNC Turn it on and your data syncs securely across all your Apple devices. Optional โ€” works fully offline too. RIVACY FIRST - No sign-up or account creation - No email collection - No analytics or tracking - No ads - Data stays on your device and in your iCloud FREE FEATURES - Create and edit training programs - Log workouts with RPE/RIR tracking - Smart progression suggestions - Progress analytics and PRs PUMPREX PRO Unlock body composition, measurements, progress photos, PDF export, deload weeks, mesocycle periodization and iCloud sync. Try free for 2 weeks. Terms of Use: https://www.pumprex.com/terms-of-service/ Privacy Policy: https://www.pumprex.com/privacy-policy/

About

FFMI Calc

Features
Read full description

โ–  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).

Screenshots

PumpRex4 screens
FFMI Calc3 screens

Verdict

The call

The clearest difference is in-app purchases: FFMI Calc at none against PumpRex's 2. FFMI Calc also leads on update cadence (every 4 days vs every 3 weeks). PumpRex's advantage is iOS requirement (17.0 vs 26.4). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PumpRex sells 2 in-app purchases, starting at $6.99 per month. FFMI Calc asks for nothing beyond the download.

UpkeepUpdate frequency

PumpRex ships an update every 3 weeks, FFMI Calc every 4 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

Scorecard3 real differences ยท 3 level
PumpRex versus FFMI Calc: the parameters behind the verdict, then further details
ParameterPumpRexFFMI Calc
PriceFreeFree
Update frequencyEvery 3 weeksEvery 4 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.0 โ€” better26.4
Further details โ€” not scored
Size5 MB1 MB
Age rating4+4+
DeveloperJARI TOIVIAINENTomoharu Iseki

In-app purchases

2 purchases

PumpRex

Subscriptions2
  • PumpRex Pro Monthly14 Days trial$6.991 Month
  • PumpRex Pro Yearly14 Days trial$44.991 Year
None

FFMI Calc

No in-app purchases

Questions

Is PumpRex free?
PumpRex is free to download, with in-app purchases available.
Is FFMI Calc free?
FFMI Calc is free to download, with no in-app purchases.
Do PumpRex or FFMI Calc have ads?
Neither PumpRex nor FFMI Calc shows ads.
Which is updated more often, PumpRex or FFMI Calc?
PumpRex ships an update every 3 weeks, and FFMI Calc every 4 days. Most recently, PumpRex was updated on October 11, 2026 and FFMI Calc on October 7, 2026.

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