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About
You got into personal training to coach people. Your job should not be to chase unpaid invoices, rebuild session spreadsheets, or piece together what a client did three weeks ago from a WhatsApp thread. But that's what most of your admin ends up being.
4Trainer is built to fix that. One platform that keeps your clients, sessions, programs, invoices, and revenue in sync - so you always know what you've sold, what you've delivered, and what you're owed.
What's inside:
- Sessions & invoicing - bill clients, log session credits, and track exactly what's been paid and what's still outstanding. No more end-of-month guesswork.
- Your calendar - schedule sessions, mark attendance, and see your full week at a glance.
- Programming - build templates and training plans from your exercise library, log sets, reps, and weight each session, and get flagged automatically when a session's been repeated so your programming stays fresh.
- Revenue tracking - log income and expenses and see how your business is actually performing.
No social feeds. No gamification. No fitness influencer nonsense.
Just a clean, fast tool built by a trainer, for trainers who treat this like the business it is.
*Founder's note: I built 4Trainer because nothing else did what I needed. My entire business runs on it - and now yours can too.*
*Subscription required for full access. 14-day free trial included with monthly plan. Monthly, 3-month, 6-month, and 12-month plans available. Payment is charged to the Apple ID at purchase confirmation. Auto-renews unless cancelled at least 24 hours before period end. Manage subscriptions in Apple ID Account Settings.
Please refer to our Terms of Use: https://4trainer.io/terms | Privacy Policy: https://4trainer.io/privacy.
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What's New in 4TRAINER
1.4.2
July 8, 2026
UI enhancements and bug fixes.
Subscription plans
Standard monthly subscription
Standard monthly subscription
$49.991 Month
14 Days trial





