Gym Bank: PT & Workout Log

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Everyone
5+
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About this app

Gym Bank is a personal trainer app for PT sessions: workout logs, client signatures, schedules, no-shows and remaining sessions in one place. Built for gym trainers, PT studios and freelance personal trainers.

Note: the app is currently available in Korean only.
Inside the app you will see its Korean name, 근육통장 ("muscle bankbook").

■ For trainers

Today at a glance
· See your next session, today's schedule and each client's remaining PT sessions on the home screen.
· Clients with few sessions left or who haven't come in a while are gathered for you.

Tap to log sets
· Pick from 201 exercises, enter weight and reps per set, and the rest timer starts when you tap done.
· Last session's records are shown side by side so you can choose today's weight.
· Load routines and plan workouts for a booking in advance.

Client signature at the end of each session
· The client signs on the trainer's phone with a finger.
· Save and share the signed session confirmation as an image or PDF.

Client records on one page
· Choose a period (this month, last month, last 3 months, all) and what to include: workouts, PT attendance, signatures.
· Preview, then save as PDF or image.

Schedule and no-shows
· Create bookings on the calendar and mark them as done, no-show or cancelled.
· Decide whether a no-show deducts a PT session.
· Get booking reminders (if notifications are allowed).

Client management
· Record name, phone number, PT sessions and expiry date, goals and notes.
· Enter InBody results to compare changes, and archive clients you no longer train.

Muscle map and exercise videos
· Tap a muscle on the front/back, surface/deep anatomy map to see exercises and stretches that use it.
· Bench press, squat and 29 stretches come with movement videos.

Session price
· Set your session price to see this month's expected income on the home screen. The price is stored only on this device.

■ Free for clients
· Clients log in with the phone number their trainer registered — no sign-up.
· Check the next PT booking and remaining sessions.
· See their own workout history, volume and body weight trends, InBody, meals and water intake.
· Earn XP and badges and join challenges by working out.

■ Free for solo lifters
· No trainer needed: sign up with email and log your workouts.
· Set logging with a rest timer, routines, progress stats, InBody, weight and meal logs, plus the muscle map and exercise videos, all free.
· Starting PT? Tell your trainer about Gym Bank.

■ Pricing
· Free: up to 3 clients with all features.
· Pro: unlimited clients, monthly or yearly subscription. Prices are shown in your local currency on Google Play.
· No free trial. The selected price is charged on the day you subscribe.
· Clients use the app for free without subscribing.

■ Subscription terms
· Payment is charged to your account when you confirm the purchase.
· The subscription renews automatically at the same price until cancelled. Cancel at least 24 hours before the end of the current period to avoid being charged for the next one.
· Manage or cancel in Play Store → Payments & subscriptions → Subscriptions.
· Uninstalling the app or deleting your account does not cancel the subscription.
· Terms: https://trainer-pro-flax.vercel.app/terms.html
· Privacy policy: https://trainer-pro-flax.vercel.app/privacy.html

■ Good to know
· Trainers must get the client's consent before entering their name, phone number or health information.
· This app is not for medical diagnosis or treatment. It provides workout records and reference information.
· Client and solo screens may show non-personalized ads. The trainer screen has no ads.
· Notification permission is optional. The app does not access location, camera or contacts.
· You can delete your account and data in Profile → Settings → Delete account.

Contact: mapo8211@naver.com
Operated by Portable Nutrition Co., Ltd.
Personal trainer app: log PT sessions, client signatures, schedules and no-shows
Updated on
Oct 14, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Personal info and 5 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

A soft beep each second for the last 5 seconds of rest, plus a final tone when rest ends. You can turn it off in Profile settings.
Member profiles now store age instead of birth date.
Performance improvements.
Content rating
Everyone
In-App Purchases
Learn more

App support

About the developer
(주)포터블뉴트리션
lyslys1108@gmail.com
공항대로 242, 열린엠타워2차 603-606호 강서구, 서울특별시 07805 South Korea
+82 10-9261-5845