Comparison

Physique Lab vs Coach OS

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

Head to head
About

Physique Lab

This app helps you achieve your fitness goals by providing insights into your training and nutrition. Log workouts, track progress with photos, and receive feedback to optimize your efforts for faster results.

Highlights
  • Log workouts and training history
  • Track progress with photos
  • Graph and organize fitness data
  • Receive behavioral feedback
  • Save custom training programs
  • Calculate calorie and step needs
Features
Read full description

Building muscle, shredding fat, and getting stronger are easier to accomplish if you know what works best for you. How many calories do you need to eat to grow muscle without accumulating extra body fat? How many steps per day do you need to look your best? What’s the perfect amount of weight to lift each workout so you can rapidly build muscle and increase strength without under-training or overtraining? You can answer all of these and more by using The Science of Sculpture app. How does the app work? - Record information about yourself. - Log your workouts (ditch your logbook). - Upload your progress pics. How does the app work for you? - All of your data will be graphed and organized into weekly, monthly, and yearly categories. - All of your workouts will be stored allowing you to have comprehensive insight into your training history. - You can save workouts to build the best training programs that deliver you results. - You will receive feedback about your behaviors to make you aware of your strengths and weaknesses. - You can view your data next to your progress pics to identify exactly what you were doing when you looked your best. By knowing more about your lifestyle and training, you can get in the habit of doing more of what works for you, and cut out the junk that is holding you back. You’ll be able to work smarter outside and inside of the gym which creates more efficient progress and allows you to reach your goals faster. This is the app built by a lifter, Dr. Chester Sokolowski, for his fellow lifters so we can all be confident when we look in the mirror, and we never have to deal with the frustrations of slow gains or plateaus. The app will hold you accountable while educating, motivating, and transforming you.

About

Coach OS

This app provides a personalized strength training program that adapts weekly to your progress and goals. It eliminates guesswork with clear instructions and proven methods to help you build strength and muscle safely. Track your improvements and gain confidence in the gym with a plan that evolves with you.

Highlights
  • Personalized strength program
  • Weekly progress-based updates
  • Clear, simple workout instructions
  • Proven strength-building methods
  • Built-in progress tracker
Features
Read full description

Train smarter with a program built for you. Whether you’re new to lifting or getting back into it, you’ll get a clear, structured plan that’s easy to follow and actually works. Just set your goals and schedule, your program adjusts week by week to keep you progressing. No random workouts. No guesswork. What You Get: - A personalized strength program designed for steady progress - Weekly updates based on how you’re doing - Simple, clear instructions with no unnecessary fluff - Proven methods that build strength and muscle safely - Built-in tracker to see your improvements over time If you want to get stronger, build muscle, and feel confident in the gym, this coaching grows with you every week. Terms & Privacy https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ https://www.boostcamp.app/privacy-policy

Screenshots

Physique Lab4 screens
Coach OS4 screens

Verdict

The call

The clearest difference is in-app purchases: Physique Lab at none against Coach OS's 6. Physique Lab also leads on review sentiment (100% vs 67%) and rating (5.0 vs 4.7). Coach OS's advantage is update cadence (fortnightly vs every 2 months) and ratings volume (82 vs 10). On price, ads and device support 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. Coach OS sells 6 in-app purchases, starting at $19.99 per month. Physique Lab asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Physique Lab holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Coach OS has 82 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 100% of Physique Lab's written reviews are positive against 67% of Coach OS's.

UpkeepUpdate frequency

Physique Lab ships an update every 2 months, Coach OS fortnightly. The most recent releases landed on June 4, 2026 and September 16, 2026 respectively.

Scorecard7 real differences · 3 level
Physique Lab versus Coach OS: the parameters behind the verdict, then further details
ParameterPhysique LabCoach OS
PriceFreeFree
Rating5.0 (10 ratings) — better4.7 (82 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings1082 — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better15.1
Further details — not scored
Size50 MB79 MB
Age rating4++12
DeveloperThe Science of Sculpture LLCBPM Health Co.

Customer experience

Physique Lab

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Coach OS

All ratings82 ratings
Positive93.9%
Neutral0.0%
Negative6.1%
Written reviews15 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Physique Lab

No in-app purchases

6 purchases

Coach OS

Subscriptions6
  • Coach OS Subscription$19.991 Month
  • Coach OS Subscription$29.991 Month
  • Atlas Subscription7 Days trial$39.991 Month
Show 3 more
  • Coach OS Subscription$139.991 Year
  • Coach OS Subscription$199.991 Year
  • Atlas Subscription$299.991 Year

Questions

Is Physique Lab free?
Physique Lab is free to download, with no in-app purchases.
Is Coach OS free?
Coach OS is free to download, with in-app purchases available.
Which has better reviews, Physique Lab or Coach OS?
Physique Lab is rated higher. Physique Lab averages 5.0 out of 5 from 10 ratings, while Coach OS averages 4.7 from 82 ratings.
Do Physique Lab or Coach OS have ads?
Neither Physique Lab nor Coach OS shows ads.
Which is updated more often, Physique Lab or Coach OS?
Physique Lab ships an update every 2 months, and Coach OS fortnightly. Most recently, Physique Lab was updated on June 4, 2026 and Coach OS on September 16, 2026.

Other comparisons