ZYM vs GC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZYM
This app fosters fitness consistency through social connection and AI coaching. Users can add friends, join challenges, and train together via group chats. AI coaches provide exercise guidance and nutrition feedback, with personalized workout planning and progress tracking.
- Add friends and follow training updates
- Join daily challenges and activity rankings
- Group chat for collaborative training
- AI coaches for exercise and nutrition advice
- Personalized workout planning
- Progress tracking and consistency review
- Apple Health integration for step count
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ZYM: Stop Guessing. Train Smarter. Your coach writes tomorrow's workout tonight, and asks how today went. Text your coach about your goal, your equipment and your schedule. Every day you get a session with sets, reps and starting weights. "Call" your coach any time to talk it through. How to use ZYM: • Form Check. Film a set, or pick a clip you already have. ZYM measures your joints and movements to evaluate your form and provide actionable feedback. • Your 24/7 AI personal coach. Start a live voice call or text to discuss about your plan, your form, or just why you don't feel like training today. Your AI coach answers in real time and provide personalized suggestions about you and only you. Ask anytime about "how do I do this exercise?" or "what should I train today?" Send a food photo for a quick nutrition read, or a training photo for a form check. • Today's workout planning. No plan? Tap once or ask your AI coach who builds a session from your goals, your equipment and what you've trained lately, sets, reps, and a starting weight to load the bar with. Tick exercises off as you go, or ask your coach to write something different if you want to adjust anything in the plan. • Train alongside other people. Follow other gym-goers, post your progress to the community feed, and compete on daily steps powered by Apple Health. Free to start: a live coach call every day, form checks, chat, and one-tap workouts. ZYM Plus adds longer and more frequent calls, camera on any call so your coach can watch you move, more daily form checks, unlimited messages, and more. Your level-up in gym is one tap away, simpler to start, easier to keep going. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://zym8.com/terms.html Privacy Policy: https://zym8.com/privacy.html
GC
Log your gym workouts with AI-generated plans tailored to your week and goals. Track sets, view progress by muscle group, and customize your training experience with various routines and features. Supports integration with popular AI assistants.
- AI-generated workout plans
- Log sets with previous numbers
- Muscle group visualization
- Rest timer and lock screen widget
- Customizable routines
- AI assistant integration
- Workout progress tracking
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Train every muscle, at the gym or at home. See each one on a body figure. Log every set with last time's numbers already filled in. Only the sets you tick count. Your own AI writes your plan. Connect ChatGPT, Claude or Gemini once. Make it yours with coral or lime, four app icons and widgets. GC (short for Gym Commitment) is a gym log your own AI can send plans to. It asks about your week and your gym, writes the plan, and the plan lands on your phone, ready to follow set by set. AT A GLANCE • Your workout full screen, one exercise at a time, with the rest timer • A plan from your own AI, showing what it did with each of your notes • Your last 7 days on Home, and 7 or 14 days on Progress • Every workout in full: each exercise, your sets and the muscles you worked YOUR AI, YOUR PLAN • Connect your own assistant once, with a code from the app • It asks one thing at a time before it writes the plan • The plan lands on your phone. Look it over, keep it and follow it • Change it in one sentence, like "make Thursday shorter". The new version lands in the same place • Ask your AI about your plan, like why an exercise is in it • Once connected, leave your AI a note on any exercise, like "No machine here". It goes with your next change • When you choose, share your last 12 weeks. Your AI writes a report with three changes for your plan • The AI tab can show one next step, so you know what to ask You connect your own ChatGPT, Claude or Gemini. Only the finished plan or report comes back to your phone. Some assistants need a paid plan or are limited by country. Rather not use an AI? Everything below works without one. IN THE GYM • Your sets open with last time's numbers, so you know what to beat • Tick a set and the rest timer starts, in the app and on your lock screen • The weight column says if it is one dumbbell, or bar and plates together • Warm up, drop and failure sets. Supersets open the next exercise when you tick a set • Machine taken? Swap the exercise. Or skip it today and keep it in your plan • Exercises show as pictures. Tap one to add it, or switch to a list • No routine? Tap Start and add exercises as you go • A new best gets a trophy on the set that beat it • Gym Time reminders on the days you pick ON YOUR LOCK SCREEN AND WRIST • A lock screen widget shows today's workout and your week • While you train, the Live Activity shows your exercise, your set and your rest. Add a photo from it during your workout • With your iPhone nearby, start, tick sets, change weight, reps and time, and finish from your Apple Watch ROUTINES, YOUR WAY • Ready-made routines for every situation: full body, upper lower, push pull legs, dumbbells only, machines only, home with no kit, 30 minutes, over 40 • Build your own, day by day, exercise by exercise • A friend or trainer builds one and sends you a link • Set a weekly goal. It counts from this week WHAT YOU SEE AFTER • Sets by muscle on a body figure, for any routine and for your week so far • Every lift on a graph, with personal records • Weekly, monthly and yearly reports that show the body parts you skipped • Progress photos kept with the session they came from. You can switch Photos off in Settings YOUR DATA • No account needed • Log every set with no signal. Form clips and your AI need a connection • Export every session and set as a CSV, whenever you want • In English, Spanish, Portuguese, Italian, German and French, following your phone or your pick in Settings WHAT PRO ADDS • More plans, changes and reports from your AI • Every earlier week, month and year • Every lift's progress back to day one • Every photo and every routine • Deeper insights with Advanced Mode • Backup to your own iCloud Questions or ideas: gymcommitmentapp@gmail.com Privacy: https://gymcommitment.com/privacy Terms: https://gymcommitment.com/terms ChatGPT is a trademark of OpenAI, Claude of Anthropic, and Gemini of Google. GC is not affiliated with any of them.
Screenshots
Verdict
The clearest difference is ads: ZYM at none against GC's shown. ZYM also leads on monetization model (free vs free with in-app purchases). GC's advantage is device support (3 vs 1) and ratings volume (28 vs 9). On price, rating, review sentiment and update cadence 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
Both are free to download. ZYM sells 2 in-app purchases, starting at $9.99 per month and GC sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for ZYM against 5.0 for GC. Both are backed by a comparable volume of ratings — 9 and 28 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
ZYM ships an update every 5 days, GC every 3 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | ZYM | GC |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) | 5.0 (28 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 9 | 28 — better |
| Update frequency | Every 5 days | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod, Apple Watch — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | ZYM Tech, Co. | gaurav khanna |
Customer experience
ZYM
GC
In-app purchases
ZYM
- ZYM Plus Monthly3 Days trial$9.991 Month
- ZYM Plus Annual3 Days trial$69.991 Year
GC
- Gym Commitment Monthly$1.991 Month
- Yearly with free trial1 Month trial$14.991 Year
- Gym Commitment Pro Yearly$14.991 Year
- Lifetime Gym Commitment$39.99









