GAIN: AI Fitness Done Right

Hey Product Hunt 👋 I’m Nick, founder of GAIN Fitness—thanks for checking us out. We originally built GAIN years ago, long before “AI fitness” was a category. Over that time, I’ve built and launched 40+ fitness apps across my own startups and consulting work with brands like Equinox, TRX, and Life Fitness. Along the way, we learned what actually works—and where fitness apps tend to break down in real peoples' busy lives. This new version of GAIN is the result of all that learning. We’ve worked with dozens of fitness experts over the years and embedded that knowledge directly into our workout-generation engine—along with guidance, tracking, and adaptation that goes far beyond what general-purpose AI chatbots can offer. The product is intentionally simple: one smart workout per day that adapts to you, without overthinking it. GAIN is built AI-first and gets better the more you use it. Longer term, we’re building toward a true fitness super app—adaptive strength, cardio, and yoga; plans that flex around your life; integrations with wearables and other apps; and deeply personalized goals and progression over time. If you try it, I’d love your feedback: - What do you like or dislike? - Anything confusing? - What should we build next? I’ll be here answering your questions and listening. Appreciate the support!