I built CoachAI because of a gap I kept watching in gyms: people show up consistently, train hard, and still get hurt or plateau — not because they lack discipline, but because nobody is watching how they move. trainers are expensive or don't fit into the schedule. Most people just guess.
So the core question became: can a phone actually see a bad rep?
Turns out yes. CoachAI uses the iPhone camera to track your movement in real time and tell you when your form breaks down — all on-device, nothing uploaded. Around it sits a program engine that adjusts properly instead of shuffling random exercises.
The biggest shift in my process was order of operations. My original onboarding asked for goals, height, weight, injuries — five screens before you ever saw the thing that makes the app different. People bounced. I've since flipped it: you do one tracked rep first, then we ask questions. Show the magic, earn the form fill.
On process: I shipped this before I was comfortable. There are rough edges I'd normally have spent another three months sanding down in private. But a polished app nobody has used is just a very expensive opinion. I'd rather have real people telling me what's wrong than keep guessing on my own.
Still early, still rough in places. If you try it, I want the harsh feedback — especially on the tracking accuracy.
Try it and see if it catches your form breaking down. That's the part I'm proudest of, and the part I want people to try out.
iOS 17+, free to start: https://apps.apple.com/app/coach...
I love the idea. I am curious if you have thought about using this for other sports? I recently started playing tennis again and would love something that could analyze my swing and give me feedback. The setup my be a little tricky but you could have airpods in and get realtime feedback.
respect for shipping this rough and asking for harsh feedback. the part I'd worry about is camera angle on the heavier compound lifts - a phone propped up to one side can miss depth or spinal rounding on a squat or deadlift that a trainer standing at the right angle would catch immediately. if the app gives a thumbs-up on form when the angle just didn't have visibility into the thing that actually matters, that's arguably worse than no feedback at all, since people will trust it and load up more. is there anything that tells the user when the angle itself isn't good enough to judge a given movement?
congrats on the launch! I'm wondering what the different applications of this tool are or if it can analyze all types of movements.
About CoachAI on Product Hunt
“Your iPhone camera watches your form, rep by rep”
CoachAI launched on Product Hunt on August 3rd, 2026 and earned 103 upvotes and 4 comments, placing #18 on the daily leaderboard. CoachAI uses your phone's camera to count your reps and correct your form in real time - a personal trainer's eyes in your pocket.
CoachAI was featured in iOS (110.6k followers), Health & Fitness (83k followers) and Artificial Intelligence (475.2k followers) on Product Hunt. Together, these topics include over 178.3k products, making this a competitive space to launch in.
Who hunted CoachAI?
CoachAI was hunted by Mouhab Tarek. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how CoachAI stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Mouhab Tarek