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Screenshots

  • 4TRAINER screenshot 1
  • 4TRAINER screenshot 2
  • 4TRAINER screenshot 3
  • 4TRAINER screenshot 4

About 4TRAINER

I built 4TRAINER because my PT business was running on a calendar, a spreadsheet and a lot of WhatsApps. Now it runs on this. My clients have their own app too, so they can see their sessions and workouts without having to ask me. Schedule Book a client once and set it to repeat every week. Block out the hours you don't work, and sync your sessions to Google Calendar. Clients can book a session, pause for a holiday or ask for a new time from their app. Nothing changes in your diary until you say yes. Deliver Open today's session and log sets as they happen. The number pad is big enough to use mid-set, and it saves after every one, so a flat battery won't cost you a workout. Supersets, timed sets and cardio are all in there. Finish the workout and the session is marked done. Build templates from the exercise library, and give clients solo workouts to do on their own. Collect Invoice a package and its sessions are set aside for that client. They unlock as the client pays. When the sessions run out, the client can't book more until you've invoiced again. Analytics shows what you've earned, what you're owed and how many sessions you've delivered. Tap any number to see the sessions and invoices behind it. Your clients' app Clients see their next session, how many sessions they have left and their invoices. Every workout you log with them is there, with 12 weeks of history and a progress chart for each lift. Expect fewer "how many sessions do I have left?" messages. 4TRAINER is free for trainers and their clients. Made in Cape Town. Terms of use: https://4trainer.io/terms Privacy policy: https://4trainer.io/privacy

What’s new

Version 2.0.0 · Updated October 19, 2026

The new 4TRAINER. Same same, just better. Your clients now have their own app. They can see their sessions, invoices and workout history, book a session or ask to move one. You approve every change before it hits your diary. Sessions left is one number now, the same on every screen for you and your client. When you invoice a package, its sessions are set aside and unlock as your client pays. Tap a session on your dashboard or calendar to mark it done, log the workout or edit it. Logging workouts has a new number pad and supersets, and clients get 12 weeks of history and progress for every lift. The whole app looks cleaner, settings are easier to find, and there's dark mode. New to 4TRAINER? A short tour walks you through a demo business before you add your own clients.

App privacy

The developer, Racquel Nina Dennison, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Usage Data: Product Interaction
  • Diagnostics: Crash Data
  • Health & Fitness: Health
  • Financial Info: Other Financial Info
  • Contact Info: Email Address, Name, Phone Number
  • User Content: Other User Content
  • Identifiers: User ID

Used for: Analytics, App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Diagnostics: Performance Data, Other Diagnostic Data
  • Health & Fitness: Fitness

Used for: Analytics, App Functionality

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