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Most fitness apps hand you a PDF and expect you to be the expert. Rabtine doesn't. Meet Rab — an AI gym coach that builds your routine from thousands of options, then rewrites it every month based on how you train. The more you log, the sharper he gets. • Instant swaps when an exercise doesn't fit • First routine in 2 minutes, free, no card • $5/mo vs $200/mo for a human trainer Not a library. Not a tracker. A coach that actually knows you.
I was tired of fitness apps that hand you a blank canvas and expect you to fill it in. They assume you already know which exercises hit which muscle, how many sets, what rep range, when to deload, what to swap when something doesn't fit. Most of us don't. And the ones who do still don't want to spend Sunday night programming next week's training.
The other option is a personal trainer. $150–200/month. Scheduling. Driving. Cancellations. Not happening.
What I actually wanted was simple: • A plan built for me — my goals, my equipment, my limits. • Continuity. Something that evolves with me month after month, not a 4-week loop on repeat. • A real guarantee of progress — not a feeling, not a chart of random numbers. • To always know exactly what to do today, and why.
So I built Rab.
Rab is an AI gym coach that builds your routine from thousands of possible combinations — not templates — based on your goals, experience, equipment, and limits. Then he rewrites it every month based on how you actually train. The more you log, the sharper he gets.
A few things we did differently: • First personalized routine in under 2 minutes. Free. No credit card, no paywall to see what you get. • Instant swaps without breaking the plan — no barbell today? shoulder acting up? Rab adjusts on the spot. • Pro is $5/month. Same level of personalization as a trainer, minus the scheduling and the $200 invoice.
Rab isn't a workout library or a tracker. He's a coach that actually knows you.
Would love your feedback — especially from anyone who's bounced off fitness apps before. What did Rab get right? What's missing?
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About Rabtine on Product Hunt
“The AI gym coach that evolves with every workout”
Rabtine was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #81 on the daily leaderboard. Most fitness apps hand you a PDF and expect you to be the expert. Rabtine doesn't. Meet Rab — an AI gym coach that builds your routine from thousands of options, then rewrites it every month based on how you train. The more you log, the sharper he gets. • Instant swaps when an exercise doesn't fit • First routine in 2 minutes, free, no card • $5/mo vs $200/mo for a human trainer Not a library. Not a tracker. A coach that actually knows you.
Rabtine was featured in Android (57.3k followers), Health & Fitness (82.8k followers), Spreadsheets (9.9k followers) and Artificial Intelligence (471k followers) on Product Hunt. Together, these topics include over 170.3k products, making this a competitive space to launch in.
Who hunted Rabtine?
Rabtine was hunted by Bruno Martínez González. 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 Rabtine stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Bruno Martínez González
Hey Product Hunt 👋
I'm Bruno, the maker of Rabtine.
Honestly, I built this for myself first.
I was tired of fitness apps that hand you a blank canvas and expect you to fill it in. They assume you already know which exercises hit which muscle, how many sets, what rep range, when to deload, what to swap when something doesn't fit. Most of us don't. And the ones who do still don't want to spend Sunday night programming next week's training.
The other option is a personal trainer. $150–200/month. Scheduling.
Driving. Cancellations. Not happening.
What I actually wanted was simple:
• A plan built for me — my goals, my equipment, my limits.
• Continuity. Something that evolves with me month after month, not a 4-week loop on repeat.
• A real guarantee of progress — not a feeling, not a chart of random numbers.
• To always know exactly what to do today, and why.
So I built Rab.
Rab is an AI gym coach that builds your routine from thousands of possible combinations — not templates — based on your goals, experience, equipment, and limits. Then he rewrites it every month based on how you actually train. The more you log, the sharper he gets.
A few things we did differently:
• First personalized routine in under 2 minutes. Free. No credit card, no paywall to see what you get.
• Instant swaps without breaking the plan — no barbell today? shoulder acting up? Rab adjusts on the spot.
• Pro is $5/month. Same level of personalization as a trainer, minus the scheduling and the $200 invoice.
Rab isn't a workout library or a tracker. He's a coach that actually knows you.
Would love your feedback — especially from anyone who's bounced off fitness apps before. What did Rab get right? What's missing?
— Bruno M.