Comparison

Satzwerk vs Gym Log

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

Head to head
About

Satzwerk

Features
Read full description

See if you're getting stronger. No feed, no ads, no account needed. YOUR WEEK AS CARDS See your week as a stack of cards, with today's workout in front. Tap a card to see its exercises and start the workout. Give every workout its own design, on the card, during the workout and in the widget on your Home Screen. Share a finished workout as a story or as a sticker for your own photo. WHAT YOU KNOW AFTERWARDS Which exercise was too light. Per exercise: did your reps land in the target, too light, too heavy or at the top. Whether you're getting stronger. One verdict per exercise: stronger, same or weaker, from your second training week. Which muscle gets too little. Working sets per muscle group and week, with the 10-20 mark as a line (dose-response meta-analysis, Schoenfeld 2017). Warm-up sets don't count. How hard it was. Enter how many reps you had left after the last set (RIR). Satzwerk shows the share of hard sets against the four weeks before. 25 weeks as a grid, plus an archive with every session and every set. A FINDING, NEVER AN INSTRUCTION Satzwerk tells you what your data says. Never what to do. No weight suggestion. The decision stays with you or your coach. DURING THE WORKOUT What you did last time is already there, in grey. Your workout stays on the lock screen. Check the set off there, without opening the app (iOS 17 and up). YOUR BODY IS PART OF THE TRAINING Weight as a weekly average, Monday to Sunday, because a single morning says nothing. Body fat from three skinfolds (Jackson & Pollock), four skinfolds (Durnin & Womersley) or from your scale. Measurements with their own breakdown, and a curve of its own for your waist. Phases with a target rate and the calorie number that fits that rate. PLANS AND GYMS Keep several plans side by side. The library has 223 exercises, your own names work too. Pick one of twelve templates for gym, dumbbells or no equipment, for beginners or advanced, and take it as a copy. Satzwerk recommends none of them. Edit this week and next without changing your plan: move workouts, add one on a rest day or mark a training break. Satzwerk keeps your gyms apart, down to what you did there last time. Pass your plan on to your training partner as plain text. SATZWERK PRO Included without Pro: plans and the plan library, workouts with last time's numbers and the lock screen, two card designs, weight with weekly average and pace, archive, backup and export. Pro unlocks the analysis: progression, sets per muscle, intensity, RIR and gyms. For your body: body fat, measurements, phases, goals and calories. Plus all seven card designs and your progression in the shared image. 30 days of Pro are on us. They start with your first completed workout and end by themselves: nothing to cancel, no payment. Satzwerk Pro comes monthly or yearly. It renews automatically unless cancelled at least 24 hours before the end of the current period. You can cancel any time in your Apple ID settings. Your own data is never locked. Whatever you logged stays visible, with or without Pro. YOUR DATA Everything runs on your iPhone. Satzwerk asks once whether to keep a backup in your own iCloud. You can switch it in your profile at any time. A backup as a file and CSV export on top. Apple Health receives your workouts, weight and body fat, each with its own switch. If you turn it on, Satzwerk reads only your weight. English and German, kg and lb, light and dark. WHO IT'S FOR For people who train seriously, from their first plan of their own to their tenth year of training. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Gym Log

Track your strength training, runs, and bodyweight progress with this ad-free app. Log sets quickly, view detailed charts, and utilize a helpful rest timer. Syncs across devices and works offline.

Highlights
  • Log reps, weight, and RPE
  • Superset and custom set types
  • Strength trend charts and history
  • Built-in rest timer with alerts
  • Track runs, bodyweight, and body fat
  • Home and Lock Screen widgets
  • Offline functionality and data export
Features
Read full description

Gym Log is a simple, ad-free tracker to track your workouts. Log a set in a couple taps, see your strength trend upward week over week, and never lose track of how much rest time you have left again. BUILT FOR THE SET-BY-SET GRIND • Log reps, weight, and RPE in seconds. The last session's numbers are right there to beat. • Warm-up, drop, failure, and AMRAP set types. • Supersets: group exercises and move through them together. • A built-in plate calculator does the math on the bar. SEE REAL PROGRESS • Estimated 1-rep max (e1RM) and best-weight tracking per exercise. • Progress charts and a full session history for every lift. • A training heatmap and streaks that reward showing up. REST TIMER THAT ACTUALLY HELPS • A single, always-visible rest countdown that survives navigating around the app. Free. • Time-sensitive alerts break through Focus so you never miss the next set. Free. • With Gym Log Plus: the countdown follows you to your Apple Watch and your Lock Screen, so you are free to doomscroll between sets without losing track of time. MORE THAN THE BARBELL • Runs: log distance, time, and pace, with weekly mileage and a 12-week trend. Optionally import your running workouts from Apple Health (read-only). • Bodyweight & InBody: track weight, body fat, and muscle mass over time. • Weekly schedule and a Today view that tells you exactly what's on for the day. YOURS, EVERYWHERE • Home-screen and Lock Screen widgets for today's plan and your streak. • Everything syncs to your account and works offline. • Export all your data as JSON anytime. Gym Log is free: logging, charts, history, runs, bodyweight, widgets, and the in-app rest timer. Gym Log Plus (monthly subscription with a 7-day free trial) adds the rest timer on your Apple Watch and Lock Screen, plus machine setup photos, and helps keep an indie app alive. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Satzwerk4 screens
Gym Log4 screens

Verdict

The call

The clearest difference is update cadence: Satzwerk at every 6 days against Gym Log's every 3 months. Satzwerk also leads on iOS requirement (16.0 vs 26.0). Gym Log's advantage is device support (3 vs 1). On price, ads and in-app purchases 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. Satzwerk sells 2 in-app purchases, starting at $3.99 per month and Gym Log sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Satzwerk ships an update every 6 days, Gym Log every 3 months. Both last shipped on October 31, 2026.

Scorecard3 real differences · 6 level
Satzwerk versus Gym Log: the parameters behind the verdict, then further details
ParameterSatzwerkGym Log
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 6 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS16.0 — better26.0
Further details — not scored
Size5 MB8 MB
Age rating4+4+
DeveloperKevin SchroppNavin Chikkodi

In-app purchases

2 purchases

Satzwerk

Subscriptions2
  • Satzwerk Pro$3.991 Month
  • Satzwerk Pro Yearly$24.991 Year
1 purchases

Gym Log

Subscriptions1
  • Gym Log Plus7 Days trial$2.991 Month

Questions

Is Satzwerk free?
Satzwerk is free to download, with in-app purchases available.
Is Gym Log free?
Gym Log is free to download, with in-app purchases available.
Do Satzwerk or Gym Log have ads?
Neither Satzwerk nor Gym Log shows ads.
Which is updated more often, Satzwerk or Gym Log?
Satzwerk ships an update every 6 days, and Gym Log every 3 months. Most recently, Satzwerk was updated on October 31, 2026 and Gym Log on October 31, 2026.

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