Kaizer vs Harbiz
Up-to-date comparison between Kaizer and Harbiz: adaptive AI, nutrition, support and price. Honest about where each wins.
Harbiz and Kaizer are both Spanish-language coaching platforms. The short version: Harbiz only generates; Kaizer adapts. Harbiz has a solid all-in-one product for individual wellness pros who need nutrition + billing + basic branding. Kaizer wins if you want weights and reps to update automatically after every session the client logs, or need prices shown in USD and charged in pesos in LATAM.
Updated: August 10, 2026
Side by side.
HarbizAdaptive AIYes — adjusts weights and reps after every logged session (sets, RIR, 1RM)No — generates plans with AI, doesn't adapt themLocal-currency billingShown in USD, charged in pesosLocal-currency billing availableNutritionMacros and calories, meal plans and AI-assisted nutritionYes, includes nutrition module (limited food DB per reviews)Free planBasic for up to 3 clients14-day trialLanguageFull Spanish support (Rioplatense + neutral) + EnglishNeutral Spanish (Spain)FocusTraining-only with real adaptive AIAll-in-one wellness (PT + nutri + physio + yoga)White-label appKaizer client app; no per-coach white-label appApp plan published at USD 219/month; advanced customization sold as an add-onPayment trackingState per client, reminder and history; does not process the moneyCharges the client (subscriptions and invoicing)Bringing what you already haveImports PDF, DOCX, XLSX, CSV, TXT or a photo (up to 500 KB)Built in its own editor; no file importWhere Kaizer wins over Harbiz.
Where Harbiz still wins.
If you need an all-in-one product that bundles nutrition, training, billing and an offer for professionals and centers, Harbiz is a solid option. Its official page publishes more than 10,000 professionals. If you want assisted load progression after every logged session, Kaizer concentrates the product on that flow.
Compare it yourself in a demo.
When to choose Harbiz
You need an all-in-one that bundles nutrition + training in one place.
You work 100% in Spain with individual clients (no gym, no multi-coach).
You value the track record and a published base of more than 10,000 professionals.
Local-currency billing in Europe is enough for you as Harbiz already offers it.
When to choose Kaizer
You want automatic AI adaptation, not just generation: weights and reps update after every logged session.
You prefer a focus on training programming over a diluted all-in-one.
You bill in LATAM: priced in USD, charged in pesos.
You prefer clients to train in the Kaizer app, with routines and tracking connected to the coach dashboard.
Move from Harbiz to Kaizer with guidance.
The Kaizer team guides you through onboarding and initial setup. The exact scope depends on the data available from your current tool.
Book a short conversation with the team.
We review which data you need to bring over.
We guide you through setting up clients and routines in Kaizer.
You review the setup before inviting your clients.
If you decide to switch, the Kaizer team supports your onboarding and initial setup. Scope and timing are agreed based on the data available in your current tool.
Sources and methodology.
We compare each product using its public pricing and official documentation. Prices, limits, and features can change; these sources were checked on the date shown.
Reviewed: 2026-08-10
FAQ: Kaizer vs Harbiz.
No. Harbiz uses AI to generate routines (a good starting point), but the routines are static: once created, they don't change based on client performance. Kaizer automatically adjusts weights and reps after every workout the client logs, recalculating the estimated 1RM with NSCA tables from sets, reps and RIR; the coach switches it on or off per client, and any week they edit drops out of the calculation permanently.
Harbiz publishes several plans and an own-brand app option. Kaizer has Basic at USD 5/month for up to 3 clients, Starter at USD 19/month up to 15, Pro at USD 49/month up to 50 and Arnold at USD 149/month up to 500, with adaptive AI included. Use the sources and official pricing pages to confirm current prices and limits.
Kaizer focuses on personal trainers and workout programming. If you need gym operations, memberships, group classes or access control, verify those capabilities directly with each provider before choosing.
Yes, Harbiz includes a nutrition module — useful if you need meal planning + training in one tool. Several reviewers note the food database is limited. Kaizer does nutrition too — macros and calories, meal plans and AI-assisted generation — so on that front they are at parity.
Polarized reviews — some clients rate it excellent, others terrible (reported inconsistency). Europe-hours support. Kaizer offers fast support in LATAM hours and a consistently high support NPS.
Yes. The team guides you through onboarding and initial setup. Before you begin, we review what information is available from your current tool and what you need to configure in Kaizer.
Harbiz only generates. Kaizer adapts. That's the central difference: Kaizer runs the coach + AI progression loop after every session the client logs, not when the coach happens to remember to update.
August 2026. We review Harbiz pricing and features quarterly.
