COMPARISON
Up-to-date comparison between Kaizer and Trainerize: pricing, language, adaptive AI, LATAM billing, client experience and support. Built to help you decide, not to sell.
QUICK ANSWER
Kaizer and Trainerize are both coaching platforms. Trainerize is the historical English-language leader (Canada, 12+ years on the market, 100K+ coaches) and works very well if your client base is 100% in the US/UK/AU/CA and you only coach in English. Kaizer is the choice for LATAM and Spain: it automatically adjusts weights and reps after every workout the client logs, prices are shown in USD and charged in pesos, and supports native Spanish — something Trainerize does not. The AI is optional — turn it off anytime; you keep the final say.
COMPARISON MATRIX
| · | Kaizer | Trainerize |
|---|---|---|
| Native language | Spanish (Rioplatense + neutral) + English | Native English. Translated Spanish. |
| Local-currency billing | Shown in USD, charged in pesos | USD only / Stripe US |
| Adaptive AI | Adjusts weights and reps after every logged session (sets, RIR, estimated 1RM) | Generates routines with AI, doesn't adapt them from real performance |
| Client experience | Your clients train in the polished, native Kaizer app | Own app, or branding as an expensive add-on (Trainerize.me Custom Branding) |
| Support | Native Spanish, team in Buenos Aires, fast response | English. North-American business hours. |
| Free plan | Free forever up to 3 clients, no card | 30-day trial, card required |
| Learning curve | Modern UX, single dashboard, guided onboarding | Robust but complex. Investment required. |
WHERE KAIZER WINS
Each point ties back to a concrete limitation of the compared product.
Trainerize generates routines with AI — and that's where the story ends. The plan stays until you manually change it. Kaizer takes every workout the client logs, recalculates the estimated 1RM with NSCA tables, and updates the weights and reps of upcoming sessions. You choose whether it runs unattended or as a suggestion to approve. Result: fewer plateaus, better adherence, higher retention.
We show prices in USD so they stay clear and stable, and billing happens in pesos: your clients pay in their local currency, with no FX surprises. Trainerize forces Stripe US and charges in dollars — prohibitive for many clients in LATAM.
Trainerize is translated (sometimes literal, sometimes awkward). Kaizer is written from scratch in Rioplatense Spanish. Terminology, tone, examples, support — all native. Not a minor detail when clients are considering trusting you with their entire team.
WHERE TRAINERIZE WINS
If your client base is 100% in the US, UK, Australia or Canada and you only coach in English, Trainerize is reasonable: 12+ years of iteration, a huge community, deep integrations with MyFitnessPal, Garmin, Fitbit and Apple Health (Kaizer doesn't have those native connectors yet), and a support team that knows the English-speaking market. Trainerize also ships an integrated habit-tracking and nutrition stack — things Kaizer keeps out of scope to focus on training programming. If your business is 100% LATAM, or you want automatic load adaptation after every session, Kaizer is the right call.
MIGRATION
Our team handles the whole migration for you in under 48 hours.
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Our team migrates your clients, routines and history for you. No CSV exports, nothing to upload by hand. Zero downtime for your clients.
FAQ
No. Trainerize has a feature to generate initial routines with AI (Trainerize AI), but the routines are static: once created, they don't change based on real client performance unless the coach manually edits them. Kaizer recalculates each client's estimated 1RM after every workout they log (using sets, reps and RIR) and updates the target weights and reps of upcoming sessions; the coach can let it run unattended or keep it as a suggestion.
Trainerize starts around USD $9–$11/month for up to 5 clients and scales by client count, with Custom Branding adding significant cost. Kaizer has a Free plan up to 3 clients, then Starter / Pro / Unlimited with the adaptive AI included on all paid tiers. Current pricing on kaizer.app/en/pricing.
Today Kaizer is focused on personal trainers. The gym model — multi-coach dashboard, multi-location and MAU-based pricing — is on our roadmap, not available yet. Trainerize is likewise built for individual trainers: it has a Studio plan for small teams but it isn't a B2B2C product designed for gyms with memberships, multi-location and chain dashboards.
Trainerize offers chat and email support, mostly in English. The product is partially translated to Spanish but not native. LATAM-hours support is limited. Kaizer has a native team in Buenos Aires with fast response and the entire product written from scratch in Spanish.
Yes — and you don't do it alone: our team handles the entire migration for you in under 48 hours. You book a 15-minute call, give us access to your current tool, and we migrate clients, routines and history. Then you review and publish. No spreadsheet exports, nothing loaded by hand.
If your client base is 100% US and you work only in English, Trainerize is a reasonable choice given product maturity and native integrations with Garmin / MyFitnessPal / Apple Health. Kaizer is clearly better if you work in Spanish, bill in local LATAM currencies, or want automatic post-session weight and rep updates instead of static templates.
The Kaizer app: a polished, native experience for your clients — without paying for a branding add-on like Trainerize.me Custom Branding (which is expensive on Trainerize). The focus is on your clients training comfortably and you programming fast, not on standing up a separate app.
May 2026. We review Trainerize pricing, features and positioning quarterly. If you find anything out of date, write us at support@kaizer.app.
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