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Trainer Gym AI
AI coach that adapts to your gym, body, and pace
Trainer Gym AI builds workout plans tailored to your goal, your equipment, and your training history — then adapts them every session as you progress. Native iOS, no fluff. Used by thousands of lifters in Brazil and growing. Free to start.
Hi Product Hunt — I'm Iago, the solo dev behind Trainer Gym AI.
I started building this three years ago for one stupid reason: every AI
fitness app I tried gave me a workout, called it personalised, and then
just… handed me the same workout next week. I've been lifting on and off
for fifteen years and I knew that's not how a real coach works. A real
coach watches how you trained on Monday and changes Wednesday because of
it. That's the thing I wanted, so I built it.
Today the app does three things I think are worth your time:
1. It generates a plan that fits your specific goal (strength, hypertrophy,
recomp, athletic, recovery, etc.), the equipment you actually have at
your gym, your training history, and how much time you've got.
2. After every set you log it nudges tomorrow's plan — not in a "good job
keep going!" way, in a "you cruised through this so we're adding load
next time" way.
3. It coaches during the set. Tempo, rest cues, when to push, when to
bail. Not screaming, not gamified — just the things a half-decent
trainer would say if they were standing next to you.
The whole thing is native iOS (I rewrote the React Native version into
SwiftUI last year — that was a journey), the AI runs through a Cloudflare
Worker I wrote with three layers of guardrails (I posted about that on HN
last week), and the model context never sees your email or anything
sensitive. Pricing is free to use, Pro is a small subscription for the
heavier coaching features. App Store: https://apps.apple.com/us/app/tr....
What I'd love feedback on, specifically:
- Onboarding. I've redesigned it three times this year and I still don't
feel like it's right.
- Whether the "real-time coaching cues" feel useful or naggy.
- What you'd want from a gym AI that no one's done yet.
I'll be in the comments all day. Ask me anything — about the product, the
indie iOS economics, the RN-to-SwiftUI migration, anything.
About Trainer Gym AI on Product Hunt
“AI coach that adapts to your gym, body, and pace”
Trainer Gym AI was submitted on Product Hunt and earned 17 upvotes and 1 comments, placing #36 on the daily leaderboard. Trainer Gym AI builds workout plans tailored to your goal, your equipment, and your training history — then adapts them every session as you progress. Native iOS, no fluff. Used by thousands of lifters in Brazil and growing. Free to start.
On the analytics side, Trainer Gym AI competes within iOS, Health & Fitness and Artificial Intelligence — topics that collectively have 662.2k followers on Product Hunt. The dashboard above tracks how Trainer Gym AI performed against the three products that launched closest to it on the same day.
Who hunted Trainer Gym AI?
Trainer Gym AI was hunted by Iago Cavalcante. 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.
For a complete overview of Trainer Gym AI including community comment highlights and product details, visit the product overview.
Iago Cavalcante