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Log one week.
Then ask it anything.
The tracker is free forever. MyCoach comes with a 7-day trial — no card needed. The more you log, the sharper it gets.
Every fitness app suddenly has "AI" in it. Most of it is a chatbot with a gym wallpaper. Here's what an AI coach actually does, where it beats a human trainer, where it doesn't, and how to tell the real thing from the wrapper.
An AI fitness coach is a language model that answers training and nutrition questions. That part is now a commodity — anyone can bolt a chat window onto an app. The difference between a toy and a coach is context: what the AI knows about you when it answers.
A real coach — human or AI — makes decisions from evidence: what you lifted this week versus last, whether your bodyweight is trending with your goal, how your calories actually landed rather than what the plan said. If the AI can't see any of that, it isn't coaching. It's autocompleting fitness advice for the average of everyone on the internet.
So when you evaluate any "AI coach," ask one question first: can it read my training log?
Here's the honest matrix. Note the last column — it's the one most "AI fitness apps" quietly fail.
| Writes programs | Answers anytime | Corrects your form | Price / month | Sees your actual logs | |
|---|---|---|---|---|---|
| ChatGPT | Yes, generic | Yes | No | €0–20 | No |
| Template apps | Fixed plans | No | No | €5–15 | Rarely |
| Human trainer | Yes | Sessions only | Yes | €150–400 | If you report it |
| MyCoach (FitSync) | Yes, adaptive | Yes | No | €10 | Yes — automatically |
Two honest admissions, because trust matters more than a sale: no AI can watch your squat depth — if your form needs eyes, book a trainer, at least for a block. And a great human coach who knows you well is still the gold standard. The point isn't that AI replaces them; it's that €10/month now buys 90% of what most people actually use a €200/month trainer for: programming, adjustments, and answers.
FitSync is a workout log, food diary, and body-analytics tracker first. MyCoach sits on top of that data. When you ask it something, it reads — at that moment — your:
It combines that with a coaching brain trained on 70+ years of bodybuilding and strength methodology, and answers like someone who has been reading your logbook — because it just did.
On privacy: your data is sent at query time to generate that one reply, then discarded. FitSync has opted out of all AI model training — your logs never train anyone's model. Full details in our Data & AI disclosure.
Real prompts from real training situations — the kind where generic advice fails and context wins:
"I need a 4-day program, one hour per session. Bad left knee — no barbell squats."
MyCoach builds the split around your constraint, substitutes knee-friendly leg work, and fits it to the equipment you've been logging with.
"My bench has been stuck at 90kg for three weeks. What do I change?"
It looks at your actual bench sessions — volume, frequency, how the back-off sets moved — and prescribes a fix based on what it finds, not a listicle.
"It's 8pm, I'm at 1,900 kcal and 110g protein. What should dinner look like?"
It knows your targets and what you've already eaten today, so the answer is arithmetic plus food suggestions — not "consult a nutritionist."
"I only slept 5 hours and today is deadlift day. Push or back off?"
It weighs your recent training load and your goal, then adjusts today's session instead of pretending every day is a good day.
For form correction and in-person accountability — no, a good human trainer wins. For programming, day-to-day adjustments, nutrition math, and answers at 6am, a data-connected AI does most of what a €200/month trainer does for a twentieth of the price. Plenty of lifters use both: FitSync's Pro Coach accounts let a human trainer program for you inside the same app.
For general questions, sure — it's good. But it can't see your logs, your food diary, or your bodyweight trend, so every answer is written for an average person who doesn't exist. You'd spend half of every chat re-explaining your situation from memory, which is exactly the data your tracker already has.
Recent workouts, logged sets, macros, bodyweight trend, sleep notes, and your goals — read at the moment you ask, used for that reply, then discarded. We've opted out of all model training. Details in the Data & AI disclosure.
The FitSync tracker — workout log, food diary, analytics — is free forever. MyCoach is a €10/month add-on with a 7-day free trial, no card needed to start. See pricing.
Yes — and adaptation is the point. It builds the program around your schedule, equipment, and injuries, then adjusts it as your logs come in. A program that never reacts to your results is a PDF, not a coach.
Try it on your own data
The tracker is free forever. MyCoach comes with a 7-day trial — no card needed. The more you log, the sharper it gets.