AI personal trainer
Train Smarter.
Not Harder.
Just tell it what you want to train. Trn.AI builds the session, coaches you through every set, and tracks the progress — all in one chat.
Just tell it what you want to train. Trn.AI builds the session, coaches you through every set, and tracks the progress — all in one chat.
No menus to hunt through, no forms to fill in before you can lift. Say what you want in plain language — start a session, log your body weight, ask how a lift is done — and Trn.AI does it.
There are no canned plans in Trn.AI. Every session is generated the moment you start it — from what you asked for, the equipment you actually have, and everything you've trained recently.
Your active session stays pinned and ready. Targets are there before you lift, and logging what you actually did takes a second — including the messy sets that other apps can't handle.
You never have to remember what your best was. Finish the set and Trn.AI checks it against your history, updating your records the moment you beat one.
Every logged set becomes a trend line. Track the lifts and track the body — and let both feed straight back into how your next session gets written.
Chat, coaching, and exercise instructions in 13 languages, including Spanish, German, French, Russian, Chinese, and Japanese.
Metric or imperial throughout — set it once, or just tell the coach mid-conversation.
Ask about any exercise and get the technique cues and the muscles it actually trains, right in the chat.
One tap to start, or use an email and password. Your training data stays tied to your account only.
Dumbbells, barbell, kettlebell, bands, pull-up bar, bench, cables, rope — or nothing at all. It only prescribes what you can do.
Free accounts get daily AI coaching messages to see how it works. Upgrade when it earns it.
"I type one line and the session is there. It's the first fitness app I haven't quit after two weeks."
"I stopped guessing. Every workout is built off what I actually did last week — my numbers have never moved this fast."
"I train at home with two dumbbells and a band. It never once gave me something I couldn't actually do."
Start training smarter today. Cancel anytime.