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App for gym trainers
Several clients on the floor, each with their routine and history one tap away — no paper, no spreadsheets.
Short answer.
Kaizer is an app for trainers who work a gym floor with several clients at once: each client has their routine on their phone, every set they log lands in their history, and you see everything from your dashboard between sessions. Routines are built by hand or with AI on a 1,500+ exercise library. Over 1,000 trainers across 20+ countries use it, free for up to 3 clients.
Updated: July 8, 2026
1000+active trainers
+120,000routines created
20+countries in operation
1,500+exercises with video
See Kaizer with your own use case.
When Kaizer fits your gym-floor work.
You train several clients per hour and can't keep up with logging what each one did.
Routines live on paper or screenshots and get lost week to week.
You want a client's history on the floor, not when you get home.
You alternate in-person and online clients and need one system for both.
You want clients to keep training well on the days they're not with you.
What Kaizer includes for the gym floor.
Instant routine
Assign the routine and it appears on the client's phone immediately — no printing, no PDFs.
History on the floor
Each client's loads, reps and PRs one tap away from your phone, between sessions.
Routines by hand or with AI
Build every routine on 1,500+ video-demonstrated exercises, or let AI draft the base and adjust it.
Every set logged
The client logs sets in the app — with you next to them or on the days they train alone.
Automatic progression
After every logged session, Kaizer adjusts loads and reps for the next one.
In-person and online together
Your gym clients and your remote clients live in the same dashboard.
Frequently asked questions
Yes. It's built for the trainer with several clients on the floor: routine on each client's phone, history one tap away and set-by-set logging, with or without you next to them.
There's a Free plan for up to 3 clients with no card required. Then: Starter at USD 19/mo (up to 15), Pro at USD 49/mo (up to 50) and Unlimited at USD 149/mo (up to 500), with lower prices on annual billing.
They see their routine in the app, with videos for every exercise and suggested loads, and log their sets. You review afterwards what they did and how it went.
Yes. Everyone lives in the same dashboard: gym clients, hybrid and fully remote, each with their routine and history.
The trainer dashboard runs on the web (computer or phone) and your clients use the Kaizer app for iOS and Android.