Comparison

Carbon Performance Gym vs StackMate

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

Head to head
About

Carbon Performance Gym

Features
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Unlock your fitness potential with the Carbon Performance appโ€”your ultimate companion for health, wellness, and performance. Designed to help you maximize results both inside and outside the gym, this app connects you to everything you need to elevate your fitness journey. Key Features: -Seamless Class Scheduling: Book your favorite classes like Mat Pilates, Delta strength, and Yoga with just a few taps. -Membership Management: View and update your membership plan, check-in history, and exclusive offers. -Workout Plans & Progress Tracking: Access personalized workout plans, track your progress, and crush your goals. -Exclusive Wellness Access: Explore our recovery lounge benefits, including cold plunges, Normatec boots, and more. -Event Updates: Stay in the loop about upcoming events like 'Sweat & Sip' and Cold Plunge Week. -Expert Guidance: Connect with our trainers for tailored fitness advice and personal training sessions. -Connect to wearable devices like Apple Watch (synced to Health app), Fitbit and Withings to sync body stats instantly Download the app today!

About

StackMate

Features
Read full description

Everything you take, in one calm place. StackMate is a thoughtful way to organize your peptides, supplements and medications. Keep your schedule together, log your doses, do the vial math, and get gentle reminders that fit into your day. Built with women in mind, StackMate brings a little more ease to a routine that already has plenty of moving parts. YOUR STACK, BEAUTIFULLY ORGANIZED Add what you take from a library of nearly 200 peptides, vitamins, minerals and botanicals, each with its own page: what it is, route, half-life, storage and sources. Set daily, weekday or custom days, days on and off, weeks on and off, or a set length that counts Day 12 of 30. SNAP THE VIAL Photograph a vial label and StackMate AI reads the name and amount for you to check. Vial math shows units on a U-100 syringe from the numbers you enter, and keeps past vials when you start a new one. A LITTLE LESS TO REMEMBER Today shows what's scheduled, what you've logged and what's still ahead. Log a dose with the site on a front and back body map, and see where you logged that compound last time. GENTLE REMINDERS A quiet nudge when it's time. Discreet notifications keep the names of what you take off your lock screen. SEE YOUR RHYTHM A calendar of complete, partial and missed days, weekly insights, check-ins on how you feel, and weigh-ins on a simple chart. YOUR RECORDS, IN THE SAME PLACE Bring in bloodwork, InBody and DEXA pages. StackMate AI reads the printed values and the lab's own ranges into a record you can check and edit, and lines them up across visits and labs. LEARN AT YOUR PACE Short lessons on syringe units, reconstitution, half-life, storage and reading lab ranges, with drawn diagrams and a Listen button. A KIND COMMUNITY Optional. Share your week with photos or a short video, follow friends and cheer each other on. No medical advice and no selling, with reporting and blocking built in. ASK STACKMATE AI Ask about your own data and get a plain answer drawn from what you logged. It describes; it never advises. Off until you turn it on. YOUR DATA, YOUR CALL StackMate works fully without an account. Sign in with Apple or Google only if you want a cloud copy, the web view or Community, and delete your account any time. Your stack, made simple. StackMate is a tracking and organization tool and does not provide medical advice or suggest treatments or dosages. Check with your clinician before starting or changing any medication, supplement or peptide routine. Terms: https://stackmate.rork.app/terms Privacy: https://stackmate.rork.app/privacy

Screenshots

Carbon Performance Gym4 screens
StackMate4 screens

Verdict

The call

The clearest difference is update cadence: StackMate at weekly against Carbon Performance Gym's every 6 weeks. Carbon Performance Gym's advantage is device support (4 vs 1) and iOS requirement (15.5 vs 18.0). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Carbon Performance Gym ships an update every 6 weeks, StackMate weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard3 real differences ยท 3 level
Carbon Performance Gym versus StackMate: the parameters behind the verdict, then further details
ParameterCarbon Performance GymStackMate
PriceFreeFree
Update frequencyEvery 6 weeksWeekly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod, Apple Watch โ€” betteriPhone
Requires iOS15.5 โ€” better18.0
Further details โ€” not scored
Size198 MB22 MB
Age rating4+12+
DeveloperCarbon Culture LLCDylan Capshaw

In-app purchases

None

Carbon Performance Gym

No in-app purchases

None

StackMate

No in-app purchases

Questions

Is Carbon Performance Gym free?
Carbon Performance Gym is free to download, with no in-app purchases.
Is StackMate free?
StackMate is free to download, with no in-app purchases.
Do Carbon Performance Gym or StackMate have ads?
Neither Carbon Performance Gym nor StackMate shows ads.
Which is updated more often, Carbon Performance Gym or StackMate?
Carbon Performance Gym ships an update every 6 weeks, and StackMate weekly. Most recently, Carbon Performance Gym was updated on November 4, 2026 and StackMate on October 31, 2026.

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