Yes, you can build a gym workout logger with sets, saved workouts and personal records.
You can build an iPhone app that logs exercises, weights and reps, then tracks your best lifts. Start with data saved on your phone, so you can use it at the gym without setting up accounts.
What keeps people on Strong:Years of polish
The checker split your own version of Strong into its key parts and sorted each one.
Workout logging
Vibecode can build an active workout screen where you add exercises and record weight and reps for each set.
Works out of the box
Exercise picker
You can search a built-in exercise list and add your own exercises.
Works out of the box
Personal records
The app can compare completed sets with your saved history and flag your heaviest lifts.
Works out of the box
Workout history
Save completed workouts on your phone and tap a past session to review its exercises and sets.
Works out of the box
An iPhone app makes it easy to log sets while you train.
Plan ahead: Define a personal record clearly, such as the heaviest completed set per exercise, so the app compares lifts consistently.
Written by the checker for a first version. Paste it into Vibecode as is, or change it to make the app yours.
Build an iPhone app for gym users who want a simple workout log. The main screen should show a Start Workout button, recent workouts and personal records. Starting a workout opens a searchable exercise picker. After choosing an exercise, I can enter weight and reps, add another set and mark each set complete. A Finish Workout button saves the session on my phone. Tapping a past workout shows all its exercises and sets. Track the heaviest completed set for each exercise and highlight a new record. Use a clean dark design with large inputs, clear text and green accents that are easy to use in the gym. Include realistic sample exercises and past workouts so I can try the whole flow.
Opens Vibecode with this prompt ready. Your first build is free.
Strong gives people its ready-made exercise instruction library and an established team that maintains the app.
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Vibecode builds a first version from one prompt, and the checker would start with these parts: start a workout, choose exercises and log weight and reps; save finished workouts and review your history; show your heaviest completed set for each exercise. Plan on an afternoon for a working first version with its real features.
Vibecode's first build is free for new accounts that sign up with Google or Apple on the web or the iPhone app, as the account's first project: one build of about 10 minutes with up to 3 features, on sample data. After that you need credits, from a paid plan or auto-reload. For your own version of Strong, the checker lists these costs: Vibecode Plus ($20 a month); Apple Developer Program ($99 a year).
Strong gives people its ready-made exercise instruction library and an established team that maintains the app. A version you build yourself won't have these: Strong's exercise demonstration library; Strong's written exercise instructions; Strong's maintenance and support team.
Checked October 21, 2026 with the free Can I vibe code it? checker
Strong is a trademark of its owner. Vibecode isn't affiliated with or endorsed by Strong.
Start from the checker's prompt and get a first version you can tap through. Your first build is free. Got a twist on it? Check that idea first.