Today's workout, built for you.
Daily workouts built for you, multi-week plans and nutrition that respects you. And whenever you want, a real coach.
The AI writes your workout. You decide if it ships.
With your goal, your level, your injuries and what you have at hand. Tired or short on time today? Say so and it rebuilds it.
Every day, your workout ready
From your records, your history and the fatigue of the week. Tick sets with a tap, time rounds and rests.
fittrena.
Start
Train with the board or in Play mode
One thing at a time, full screen, with the watch on your wrist. When you finish, you celebrate and share.
Multi-week plans
Phases, weeks and days on a fixed calendar. Run several at once: kettlebell Monday and Wednesday, running Tuesday and Thursday.
Nutrition that respects you
Macros tailored to you, recipes and logging with a photo of your plate. Tell it your allergies once: it never skips them.
Your watch, included
Native apps for Apple Watch and Wear OS, plus heart rate and calories from Apple Health and Health Connect.
Repeat and adjust
Go back to a past workout, change the loads with last time’s reference and schedule it for any day you want.
AIAnything a human didn’t program carries the AI label. You always know who signs your workout.
Choose who coaches you
Every AI coach has a method: their formats, their progressions and what they would never program. Pick one when creating a plan or a workout, or let Fittrena build it in general.

Your brand on every workout your clients do
Link with your coach by code or from the directory. They program by hand or with the AI at their side, and their brand travels in every workout you do.
- You decide what they see, category by category.
- Verified reviews: only real clients can rate.
- Their plan and your AI plan coexist: nothing forces you to choose.
- No store fees: the coach pays per client slot and the client never pays for the app.
14 days free, no card
Program by hand, with templates or from an AI draft
Drag sessions onto the days of the week, upload the spreadsheet you already use, or let the AI propose and you sign. Nothing reaches the client until you approve it.
The watch, included
A native Apple Watch app
Live heart rate, timers, rounds and ticking off sets from the wrist.
Wear OS
The same app for Android watches, from Google Play on your watch.
Any other watch
Apple Health and Health Connect add heart rate and calories to your workout.
Quick questions
Does it work at home with no gear?
Yes. The AI only uses what you have: bodyweight, a band or a kettlebell. If something’s missing, it substitutes and tells you why.
Can I use it without a coach?
Of course. Most people train with the AI alone. A human coach is optional and can be added whenever you want.
What about my injuries?
You tell it once and they become a safety rule, not a preference. No workout ignores them.
Which languages?
Spanish, English and Portuguese, in the app and in emails.
And my data?
It’s yours. Sharing on social never includes personal data, and with your coach you choose what they see, category by category.
Tomorrow’s workout is already planned.
You just show up.