Show HN: I built ExtremeFitness.app for gym trainers
extremefitness.appI built ExtremeFitness.app to solve a problem I’ve seen many trainers face: managing client workouts and diet plans across messy spreadsheets, PDFs, and chat messages.
A while ago, my wife and I were both following structured fitness and nutrition plans, and I noticed how difficult it was for our trainer to keep everything organized — especially when adjusting workouts or calories week by week. That’s what sparked the idea.
I wanted to create a simple tool that lets trainers create, update, and share plans effortlessly, while still keeping the human touch that coaching needs. The app includes a built-in exercise and diet library, along with AI suggestions to help trainers personalize routines faster.
It’s just me building this so far, and I’d love your thoughts — especially from anyone who trains clients or works in health tech. Does this seem genuinely helpful? What would make it better?
To take a quick look: https://extremefitness.app
Thanks for taking a look.