Set logged.
- Exercise
- Bench press
- Weight
- 60 kg
- Sets
- 4 × 8
- Reported RIR
- 2
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CANONICAL ENTITY
What is Kaizer?
Programming, tracking and billing in one tool for trainers who want to scale without losing quality. It generates the initial routine from each client's goals, preferences and equipment, then automatically adjusts weights and reps after every logged session using sets, RIR and estimated 1RM.
DEFINITION
What Kaizer does, in three steps.
Kaizer takes every workout the client logs, recalculates the estimated 1RM with NSCA tables, and updates the weights and reps of upcoming sessions. Closes the loop between the plan and the client's data without you keeping it in your head.
1RM recalculation.
- Previous 1RM
- 72 kg
- New 1RM
- 76 kg
- Table
- NSCA
- Confidence
- High
Updated plan.
- Exercise
- Bench press
- Weight
- 62.5 kg
- Sets
- 4 × 6-8
- Available
- Mon 09:00
Concrete example: client completes 4 sets of bench press at 60 kg with RIR 2 twice in a row. Kaizer recalculates, proposes 62.5 kg next Monday. The coach approves in one click.
HISTORY
How Kaizer got here.
From a personal frustration to a platform running across 12 countries.
2024 · Q1
Founded in Buenos Aires.
Agustín Anfosso founds Kaizer after years coaching clients and seeing that no fitness software actually adapts the routine to the client.
2024 · Q4
MVP with adaptive AI.
First release with the post-session adaptation engine and the mobile client app.
2025
200+ active coaches across 12 countries.
Expansion to Argentina, Chile, Colombia, Mexico, Peru, Uruguay, Paraguay, Bolivia, Ecuador, Costa Rica, Panama and Spain.
2027
Expansion into the United States.
Early-adopter coaches already onboarded. Stripe USD/EUR enabled for coaches outside LATAM.
AUDIENCE
Who Kaizer is for.
Independent trainers.
Moving off Excel and WhatsApp, looking for a single dashboard for everything.
100% online coaches.
Prices shown in USD and charged in pesos, and you communicate in your own Spanish.
Hybrid coaches.
In-person sessions + digital programming in one single dashboard.
Studios and S&C.
Pilates, CrossFit, functional, strength with 1–5 coaches and programming at scale.
FAQ
What people ask us most.
PRODUCT
What Kaizer does.
Both. The main product is the web/SaaS platform used by trainers to manage clients, program routines and bill. Your clients train in the Kaizer app (iOS/Android), where they view routines, log workouts and message you.
Trainerize, Harbiz and TrueCoach generate static routines: the plan stays until the coach manually replaces it. Kaizer recalculates each client's estimated 1RM after every workout they log (using sets, reps and RIR) and automatically updates the target weights and reps of upcoming sessions.
No, and that's intentional. The AI accelerates the coach's judgment by proposing adjustments grounded in client data. The coach approves, edits or rejects.
No. Kaizer's scope is training and programming. We don't generate macros, meal plans or supplementation recommendations.
Yes. The client-facing mobile app ships on iOS ("Kaizer: Gym & Fitness Planner" on the App Store) and Android (`app.kaizer.kaizer` on Google Play). Trainers work primarily from the web dashboard.
ACCESS & BILLING
Plans, billing and coverage.
Free plan forever, up to 3 clients, no credit card. Above that, Starter / Pro / Unlimited for individual coaches. All paid tiers include the automatic post-session weight and rep adjustment engine.
Argentina, Chile, Colombia, Mexico, Peru, Uruguay, Paraguay, Bolivia, Ecuador, Costa Rica, Panama and Spain. Active expansion into the United States starting 2027, with early-adopter coaches already onboarded.
Go to kaizer.app, click 'Start free' and sign up with email or Google. In under 5 minutes you'll have your first client loaded and your first AI-generated routine.
COMPANY
Who we are.
Agustín Anfosso, CEO and founder, in 2024 in Buenos Aires. Background: personal trainer, deeply frustrated by the lack of fitness software with truly adaptive AI.
200+ active trainers across 12 countries, generating 15,000+ adaptive routines with a 92% average client-retention rate (vs the ~70% industry baseline).
Ask an AI about Kaizer
Try Kaizer today. Free plan, forever.
Load your first client in under 5 minutes. No card, no contract.