Personal training software
Routines, clients, chat and business metrics in a single platform. Build routines by hand or with AI — your call.
Short answer.
Kaizer is personal training software that centralizes routine building, client tracking, chat and business metrics in one platform. Its AI creates routines from goals and equipment, adapts loads after every logged session and flags churn-risk signals. Over 1,200 trainers use it across 20+ countries, and Basic covers up to 3 clients.
Updated: August 10, 2026
See Kaizer with your own use case.
When software like Kaizer makes sense.
You build programs in spreadsheets and lose hours copying, pasting and adjusting loads by hand.
Your clients are scattered across WhatsApp, Excel and notes, with no single view per client.
You want to spot the moment a client stops training — before they churn.
You need retention, adherence and session metrics without building reports manually.
You want a platform available in English, Spanish and Portuguese with local pricing.
What Kaizer includes.
Routines by hand or with AI
Build routines by hand over 1500+ exercises, or let the AI draft the first version from goals, preferences, limitations and equipment.
Automatic load adaptation
After every logged session it adjusts sets, reps and loads using estimated 1RM from NSCA-derived tables.
Client management
Every client in one panel: profile, notes, injuries, files and attention filters.
Smart alerts
Detects risk and churn signals so you act before losing the client.
Built-in chat
The conversation with each client, in real time and inside the product.
Business insights
Retention, adherence, sessions and PRs — trended, with deltas vs the previous period.
Client app
Each client trains from the Kaizer client app, where they see their trainer, routines and progress.
Frequently asked questions
There's a Basic plan for up to 3 clients, Starter at USD 19/mo (up to 15 clients), Pro at USD 49/mo (up to 50) and Arnold at USD 149/mo (up to 500). Unlimited is quoted to fit. Annual billing lowers each published price, and there's local pricing per country. You can pay via Stripe, Mercado Pago or card.
No. The Basic plan costs USD 5 and lets you start with up to 3 clients, with access to routine building and tracking.
Kaizer is available in Spanish, English and Portuguese, with global support and a dedicated team for LATAM.
It creates routines from goals, preferences, limitations and equipment; adapts loads automatically after every logged session; detects risk and churn signals; and generates business insights. It also includes a built-in assistant that operates the platform in natural language, by text or voice.
Yes — they use the Kaizer client app (iOS and Android), where they see their trainer, routines and progress, and log every session.
Over 1,200 trainers across 20+ countries, who have already created 150k+ routines on the platform.
Kaizer's apps hold 4.9 on the App Store across 1,200+ ratings and 4.8 on Google Play across 1,700+. The line that comes back most is the time recovered: 2 hours per week, per client, so a trainer with 10 clients gets back 20 hours a week that used to go into building routines by hand and answering the same question three times.
You upload the routine you already use as a PDF, Word, Excel, CSV, TXT file or a photo, and Kaizer transcribes it into an editable routine. The cap is 500,000 bytes per file, and the legacy binary formats (.doc and .xls) are not accepted. Most people migrate one client first to see how it lands, and the rest is repetition from there.
