
AI fitness
redefined.
Every rep on the record.
Your coaches' videos in one vault. On-device AI that watches your form while you lift. A crew that keeps you honest.
Good form isn't a feeling. It's a line you can see, rep after rep.
Prop your phone and start your set. Therox counts each rep, turns the joints that drift red, and calls out the fix while you move. The video never leaves your phone.
- 01
Depth
How low each rep goes. A short rep shows up on the check as it happens, not after the set.
- 02
Lockout
Full extension at the top of every rep. The check lights up when you stop short.
- 03
Body line
Hips in line with your shoulders and heels. A sagging or piking plank turns those joints red on screen.
- 04
Lowering
How long the way down takes. Rush it and the cue is "slow the way down".
- 05
Drive
How long the way back up takes. Grind it out and the cue is "drive up faster".
- squats
- hinges
- presses
- overhead work
- pulls
- rows
- arms
- shoulders
The Vault
Save the coaches you actually learn from. Film the sets you actually do. Let on-device AI watch your form while the bar is still moving.



Your form on the record. Your coaches in one place. A crew that keeps you honest.
Challenges and the rest of the kit
- (a)Gym Rat challenges
Launching
with the appShare a code, compete with friends, and let the leaderboard settle who actually showed up. - (b)Form historyEvery checked set
- (c)Voice cuesCalled out mid-set
- (d)Your weekly planA folder for each day
// Early access · Free to start · 18+
Tired of guessing how that set looked?Prop your phone. Watch it back.

Get the app before everyone else.
Join with your email. We send one message to confirm it, and we write again when Therox launches.



