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Best personal trainer software in Latin America and Spain (2026)

Almost every list of the best personal trainer software is written for a coach in Texas who charges in dollars and programs in English. If you train in Buenos Aires, Bogotá, Mexico City or Madrid, half of those criteria do not apply and the other half is missing: which language your client works in, which currency you pay in, how much the bill climbs when you go from ten to thirty clients, and who recalculates the loads when the calendar tightens. This guide compares seven platforms on those criteria, with each one's cons, ours included.

Glossary

Assisted progression
The software writes the weights and reps of upcoming sessions from what the client logged, while the coach keeps the decisions: switches it on, off, and edits.
Client cap
The maximum number of active clients a plan includes. It is the variable that moves a platform's real price the most as you grow.
Add-on
A feature billed on top of the base plan. Nutrition, payments or automation are often sold this way, and they change the price on the cover.
White-label app
An app published on the stores under your name and logo, without the platform's. It comes as a high tier or as an add-on.

Almost every list of the best personal trainer software is written for a coach in Texas who charges in dollars and programs in English. If you train in Buenos Aires, Bogotá, Mexico City or Madrid, half of those criteria do not apply and the other half is missing: which language your client works in, which currency you pay in, how much the bill climbs when you go from ten to thirty clients, and who recalculates the loads when the calendar tightens. This guide compares seven platforms on those criteria, with each one's cons, ours included.

Which criteria to choose personal trainer software by

Before looking at names it is worth setting the bar. These are the seven criteria that separate a platform that works for you in Latin America or Spain from one that works in Ohio, in the order they usually hurt.

A note on sources: the prices and limits in this article come from each product's official pages and Capterra profiles, reviewed on August 10, 2026. They change often. If you are going to decide on a number, confirm it on that product's pricing page the same day.

  • Adaptive progression: whether the software recalculates weights and reps after every logged session, or only generates an initial routine and leaves the rest to you, client by client.
  • Native Spanish: a translated app is not a product designed in Spanish. The coach's dashboard and the support matter as much as the client app.
  • Billing in your currency: paying in USD from Argentina, Colombia or Mexico is not an accounting detail, it is a cash-flow variable.
  • Client app: whether your clients get a decent app, whether it is the platform's or can carry your brand, and what that costs.
  • Chat and follow-up: in-product messaging, attachments, alerts for clients who stopped training.
  • Marketplace or acquisition: whether the platform brings you new clients or only manages the ones you have.
  • Price per client cap: what you pay with 3, 15 and 50 clients, with the add-ons you need included. That is the number that actually compares.

The table: seven platforms against the same criteria

A summary per platform, with what each does best and what to know before paying. All of them cover the basics: routines, tracking and messaging. The differences are in the criteria above.

  • Kaizer: assisted progression after every session (estimated 1RM from sets, reps and RIR); native Spanish plus English and Portuguese; USD prices with local billing in Argentine pesos; Basic USD 5 a month up to 3 clients, Starter USD 19 up to 15, Pro USD 49 up to 50, Arnold USD 149 up to 500; 14 days free with no card and two months free on annual billing. Cons: a young product (2024), the client app carries the Kaizer brand, it does not process your clients' payments (it keeps the ledger, it does not move the money), and it has no native connectors to wearables or third-party nutrition apps.
  • Trainerize: the veteran all-in-one, with deep integrations with MyFitnessPal, Garmin, Fitbit and Apple Health and habit tracking; a permanent Free tier for 1 client, Grow around USD 10 a month for 2 and Pro around USD 25 for 5, with higher prices by seat count and add-ons (integrated Stripe payments cost USD 10 a month extra). Cons: the AI generates plans but does not adapt them to real performance, Spanish is translated, and billing is in USD.
  • Everfit: one of the best manual routine builders on the market and 4.8 out of 5 on Capterra; Free up to 5 clients and paid plans from around USD 16 to 19 a month for 5 clients. Its percentage-of-1RM feature does recalculate weight with Epley on strength exercises, which is more than most do. Cons: the coach dashboard is still in English (only the client app is translated), nutrition, automation and payments are stacked add-ons, and billing is in USD.
  • TrueCoach: fast manual programming and a polished video-first experience; from around USD 19 to 29 a month for up to 5 clients. Cons: English only (the company confirms it), no AI or automatic progression, a 14-day trial that needs a card, USD billing and a 5% fee on every payment since January 2026.
  • Hevy Coach: the simple, inexpensive option if your clients already use the Hevy app; USD 25 a month when this comparison was reviewed, a single plan tiered by client count. Cons: no AI, you update weight and reps client by client, programming is desktop-only and the dashboard is in English.
  • Harbiz: an all-in-one with nutrition, management and invoicing, strong in Spain and with more than 10,000 professionals according to its own page; local-currency billing available. Cons: the AI generates plans but does not adapt them, and the own-brand app sits on a plan published at USD 219 a month with advanced customization as an add-on.
  • FitBudd: the most direct way to have your own branded app on iOS and Android; Starter USD 15, Pro USD 79 and Super Pro USD 149 a month, which is the first plan with the branded app, plus a USD 75 setup fee and the Apple and Google developer accounts. Cons: the AI dates from January 2026 and produces a one-time draft, with no reprogramming after each session; sales and support are in English; billing is in USD.

What is the difference between generating a routine and adapting it?

It is the criterion where marketing and product get confused most, so it is worth grounding. Generating is building the initial routine from goals, level and equipment. Nearly everyone does it today, with more or less grace. Adapting is what happens the following week: someone looks at what the client lifted, how many reps they did and how many were left, and rewrites the load.

On most of the platforms in the table that someone is you. Everfit does part of it, auto-filling weight by percentage of 1RM on strength exercises, which is already more than the rest. Kaizer does it across the whole routine: it estimates the exercise's 1RM with an NSCA-derived coefficient table from the sets, reps and RIR, and writes the weight of the weeks you did not edit, rounded to the increment that exists on the rack. The full method, with the worked example and its limits, is published on the page on how load adaptation works.

What none of them does, Kaizer included, is decide for you. The engine does not know the client slept four hours or is coming back from an injury. That is still your job, and the only useful question is how much time it leaves you to do it.

What does each option really cost with 15 clients?

The cover price misleads because almost every entry plan covers between one and five clients. At fifteen, which is where an online coach starts living off this, the math changes. On Kaizer that is USD 19 a month on Starter, with assisted progression included and nutrition without AI; AI-assisted nutrition starts on Pro, at USD 49. On Trainerize and TrueCoach a cap of 15 lands on intermediate plans whose exact price depends on the date and the add-ons, so quote it the day you decide. On Everfit the base plan looks cheap until you add nutrition, automation and payments separately.

Two more things weigh in the region. The first is currency: if you charge in pesos and pay in dollars, every devaluation raises your bill without anyone telling you. Kaizer publishes prices in Argentine pesos and Harbiz offers local-currency billing; the rest bill in USD. The second is support: a problem at nine at night in Lima is solved better by a team working in your language and time zone than by a help center in English.

Which one to choose for your case

There is no best platform for everyone. There is a best one for your roster, your market and the way you program. These are the combinations we see most often, without decoration.

  • You train in Spanish, have between 5 and 50 clients and progression is the first thing that slips: Kaizer. If you also need a branded app or wearable integrations, you do not get them there yet.
  • Your business is 100% in the United States, in English, and you value wearable and nutrition-app integrations: Trainerize. Accept that you reprogram the loads yourself.
  • You program everything by hand, with lots of video, and want the best manual builder: Everfit or TrueCoach. Everfit if its percentage-of-1RM recalculation is enough for you; TrueCoach if you work only in English and the payment fee does not bother you.
  • Your clients already use Hevy and you have fewer than ten: Hevy Coach. Minimum friction, and the most manual work as you grow.
  • You are in Spain and want nutrition, invoicing and community in one place: Harbiz. Spanish is on par; the difference with Kaizer is load adaptation, not language.
  • Your number-one priority is your own app on the stores: FitBudd. Count the Super Pro plan and the setup, not the entry price.

The cover price covers five clients. The decision is made at fifteen.

What is clear

All seven platforms do the basics well. What separates them for a coach in Latin America or Spain is three things: who recalculates the loads, which language and currency you work in, and what you pay as the roster grows.

Choose on those three criteria, with prices confirmed the day you decide, and not on the longest feature list. A feature you do not use is worth nothing, and one that saves you two hours a week per client is worth exactly that.

Sources

If you want to see how assisted progression behaves with your own clients, Kaizer offers 14 days free with no card on every plan. See plans and pricing.

See plans and pricing

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