AI app for personal trainers
An AI that builds routines, adapts loads and operates the platform for you — not a chatbot bolted on the side.
Short answer.
Kaizer is an AI app for personal trainers that lets you create routines, track clients and grow your business from a single platform. The AI builds routines from goals and equipment, adapts loads after every logged session, detects churn signals and generates business insights. It also includes a built-in assistant that operates the whole platform in natural language, by text or voice.
Updated: July 22, 2026
See Kaizer with your own use case.
When an AI app makes sense.
You've tried coaching apps where 'AI' was just a chatbot that never touched your programming.
You want your clients' loads to adjust after every session — not at the end of the month.
You'd rather ask for things in plain words, by text or voice, than dig through menus.
You need something watching your clients' adherence while you're on the gym floor.
You want business decisions backed by data without building the reports yourself.
The routine arrives built, not blank.
You give it the goal, the equipment on hand, the client's preferences and limitations, and the AI returns a full routine over a base of 1500+ exercises. You start editing something that already makes sense.
- Real context goes inGoal, days per week, the equipment at the gym they actually train in, and the limitations you already know about.
- An editable routine comes outBlocks, exercises, sets and reps you can change one by one before assigning it.
- 1500+ exercises behind itEach one with its video and its variations, so you are not explaining technique over chat.
Loads move on their own between sessions.
When the client logs the session with sets, reps and RIR, Kaizer estimates 1RM from NSCA-derived tables and adjusts the next load. You can edit the result or switch progression off.
- RIR decidesIf they finished with more in reserve than expected, the load goes up; if they finished at the limit, it does not.
- A suggestion, not a decreeReview every adjustment before it reaches the client, or let it apply on its own.
- No spreadsheet in betweenProgression stops depending on you sitting down on a Sunday to recalculate by hand.
It tells you which client is drifting away.
Kaizer watches each client's adherence and flags drop-off signals while there is still something to do about it. Instead of finding out the day they do not renew, you see it the week they start missing sessions.
- A signal per clientUnlogged sessions, weak weeks and adherence drops — not an average across your whole roster.
- Business readingsRetention, adherence and sessions, in numbers that tell you where to look first.
- Early enough to actThe warning arrives while the client is still your client.
And you can ask for all of it out loud.
The assistant lives inside Kaizer and operates the platform in natural language, by text or by voice. It searches, builds and edits routines and executes actions for you, with the coach always in control.
- By text or by voiceYou ask for the change the way you would ask someone on your team, without walking through menus.
- It executes, not just answersIt builds the routine, edits it and leaves it ready — it does not hand you instructions to carry out yourself.
- You reviewYou review the routine and send it when it is ready.
What Kaizer's AI does.
Routine creation
Generates routines from goals, preferences, limitations and equipment, over a base of 1500+ exercises.
Load adaptation
After every logged session it recalculates loads using estimated 1RM from NSCA-derived tables (sets, reps, RIR).
Churn detection
Flags risk and drop-off signals per client so you can step in early.
Business insights
Generates retention, adherence and session readings that tell you where to look.
Built-in assistant
A ChatGPT-style assistant inside Kaizer that operates the platform in natural language, by text or voice, and executes actions for you.
Frequently asked questions
Kaizer's assistant doesn't just answer — it operates the platform. It searches, builds and edits routines and executes actions in natural language, by text or voice. Beyond the assistant, the AI works on its own: it adapts loads after every session and detects churn signals.
No. The AI proposes and automates the repetitive parts — initial routines, load adjustments, alerts — but you review and decide. Programming judgment stays yours.
After each session a client logs, it estimates 1RM using NSCA-derived tables and adjusts sets, reps and loads based on the logged RIR.
Basic costs USD 5/mo for up to 3 clients. Other plans with published prices run from USD 19/mo (Starter, up to 15 clients) to USD 149/mo (Arnold, up to 500), with 2 months free on annual billing and local pricing per country. Unlimited is quoted to fit.
Yes. Kaizer is available in Spanish, English and Portuguese, with a dedicated support team for LATAM.
