Comparison

fin fitnesstracker vs Fett

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

Head to head
About

fin fitnesstracker

Track your strength training progress with detailed logging of sets, reps, and weights. Monitor your performance over time and integrate data from Apple Health for a comprehensive view of your readiness and progress. Share workouts or keep them private.

Highlights
  • Detailed workout logging
  • Progress visualization
  • Apple Health integration
  • Customizable for different sports
  • Workout sharing options
  • Streak protection for rest days
Features
Read full description

Logging your strength training is free in fin. No time limit, no trial that runs out. Been training for months and not sure whether it's actually going anywhere? fin records every set, every weight and every rep — and shows you in plain numbers where you stand. FREE, FOR GOOD Log sets, reps and weights. The full exercise catalogue with 222 movements. Up to three training plans. Apple Watch, Lock Screen control and everything with friends. YOUR LAST SET, ALWAYS IN VIEW While you train, your previous value sits right next to the current one. No thinking between sets — just a number to beat. FROM THE LOCK SCREEN Add weight, tick off a set, start the rest timer — without opening the app. Works on Apple Watch too, even without your iPhone nearby. WITH FRIENDS OR ON YOUR OWN Share sessions with people who follow you — or keep everything private. You decide for each one. REST DAYS DON'T BREAK YOUR STREAK Marking a day as rest or sick keeps your streak intact. Training should help you, not punish you. WARM-UP SETS AND DROPSETS Hold a set to mark it as a warm-up. It shows an A instead of a number and stays out of the count. — WITH FIN PRO FIN SKILL Set a goal for strength, calisthenics or endurance. fin plans the path week by week, replans when something hurts and calls out your target pace on runs. Uses AI only if you agree. WHAT'S IN YOU TODAY fin reads sleep, heart rate and resting heart rate from Apple Health and shows your training readiness each morning. Measured against your own baseline, not some population average. PROGRESS IN NUMBERS Weight per exercise across weeks and months. Total volume, personal records, bodyweight trend. You log, fin does the rest. HYROX, STRENGTH ENDURANCE AND CARDIO Hyrox with the official competition weights by division. Cardio with running, rowing, Ski Erg, elliptical and stair climber — each with the right units. AND Widgets for Home Screen, Lock Screen and StandBy. Garmin sync. Your full history beyond 30 days. Nothing is ever deleted. Unlock later and everything is still there. — SUBSCRIPTION fin (1 month) – €7.99 fin (annual) – €49.99 The first 30 days are free. After that the subscription renews automatically unless cancelled at least 24 hours before the period ends. Payment is charged to your Apple Account. You can cancel any time in your Apple Account settings. Terms of Use: https://fin-tracker.de/terms.html Privacy Policy: https://fin-tracker.de/privacy.html

About

Fett

Features
Read full description

Fettsack ist dein ehrlicher Körperfett-Coach. Mach ein Foto von dir, lass deinen Körperfettanteil per KI schätzen, verfolge deinen Fortschritt und arbeite mit deinem persönlichen Coach an deinem Ziel – Fett verlieren, Form halten oder Muskeln aufbauen. SO FUNKTIONIERT ES • Body-Scan: Foto machen oder aus der Galerie wählen – die KI schätzt deinen Körperfettanteil und gibt dir eine ehrliche Einschätzung. • Verlauf: Alle Scans auf einen Blick, damit du siehst, wie sich dein Körper verändert. • KI-Coach: Frag deinen Coach zu Training, Ernährung und Motivation. Er kennt dein Profil, dein Ziel und deine letzten Scans. • Kalorien & BMI: Dein Kalorienziel, Grundumsatz, Protein-Empfehlung und BMI werden aus deinen Angaben berechnet. • Apple Health: Optional Schritte und Aktivkalorien einbinden sowie Körperfett und Gewicht in Health speichern. DEINE DATEN Profil, Scans und Chats liegen auf deinem iPhone. Für die Foto-Analyse und den Coach werden Foto bzw. Chatnachrichten zusammen mit deinen Profilangaben an Google Gemini übertragen. Ein Account bei uns ist nicht nötig – der App-Zugang wird nur lokal mit einem Passwort geschützt. Alle Daten kannst du jederzeit in der App löschen. WICHTIG Die Körperfett-Schätzung ist eine visuelle Einschätzung und keine medizinische Messung. Die App ersetzt keine ärztliche Beratung.

Screenshots

fin fitnesstracker4 screens
Fett4 screens

Verdict

The call

The clearest difference is in-app purchases: Fett at none against fin fitnesstracker's 4. fin fitnesstracker's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. fin fitnesstracker sells 4 in-app purchases, starting at $6.99 per month. Fett asks for nothing beyond the download.

UpkeepUpdate frequency

fin fitnesstracker ships an update every 3 days, Fett every 5 days. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 5 level
fin fitnesstracker versus Fett: the parameters behind the verdict, then further details
Parameterfin fitnesstrackerFett
PriceFreeFree
Positive reviews97.3% of reviews—
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size89 MB1 MB
Age rating4+4+
DeveloperTim BodonSebastian Schirmer

In-app purchases

4 purchases

fin fitnesstracker

Subscriptions3
  • fin (1 Monat)1 Month trial$6.991 Month
  • fin (3 Monate)1 Month trial$8.993 Months
  • fin (Jahresabo)1 Month trial$44.991 Year
One-time1
  • fin$99.99
None

Fett

No in-app purchases

Questions

Is fin fitnesstracker free?
fin fitnesstracker is free to download, with in-app purchases available.
Is Fett free?
Fett is free to download, with no in-app purchases.
Do fin fitnesstracker or Fett have ads?
Neither fin fitnesstracker nor Fett shows ads.
Which is updated more often, fin fitnesstracker or Fett?
fin fitnesstracker ships an update every 3 days, and Fett every 5 days. Most recently, fin fitnesstracker was updated on November 10, 2026 and Fett on November 6, 2026.

Other comparisons