
Forj: AI Gym Coach & Tracker
Physique Scan & Workout Log
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Free
In-App PurchasesWith Ads
About
Forj is the AI fitness coach that actually remembers you.
Most fitness apps are silent libraries — you log a workout, the app says "great job," and forgets you exist until the next session. Forj is the opposite. Scan your physique to see where you stand, then get a coach that learns what works for your body, your schedule, and your goals — and adjusts every session like it reads your training log every morning.
WHAT MAKES IT DIFFERENT
• See where you're starting. Scan your physique in seconds for a body-composition read, then watch it change as you train — progress you can actually see, not just numbers on a bar.
• A coach with persistent memory. Tell it once that your left knee acts up on heavy squats, and it'll factor that into every plan, every set, every recommendation — forever. You can see exactly what it remembers, and delete anything you don't want.
• Plans that adapt to what actually happened. Skipped legs three weeks in a row? It rebalances. PR'd your bench by 5kg? It updates the next session's load. No more rigid 8-week programs that ignore reality.
• Talk to it while you train. Tap the chat bubble mid-workout: "swap incline DB press, bench is taken" or "should I push for one more rep?" — get a useful answer in two seconds.
• Track everything that matters. Workouts, sets, reps, weights, supersets, body measurements, personal records — all in a clean dark interface that doesn't try to be a social network you didn't ask for.
• Stats that tell you something. Volume trends per body part. Time-since-last-hit. PR cadence. Streak protection. Real numbers, not vanity dashboards.
• Voice input. Press and hold the mic, talk to your coach hands-free between sets. No typing while your forearms are pumped.
WHO IT'S FOR
Lifters and gym-goers who want an opinionated, personalized program — not a feature list. People who train 3+ days a week and care about progressive overload. Beginners welcome; advanced users get the depth.
WHO IT'S NOT FOR
If you want endless video libraries, scrollable social feeds, or step-counting — there are great apps for that. This one is laser-focused on the lift.
HONEST AI USE
The AI coach is a tool, not a doctor. It uses Anthropic's Claude models routed through OpenRouter; your training data is processed to generate recommendations and is never sold. See the in-app memory screen for full transparency on what's stored, and delete anything (or your whole account) with one tap.
SUBSCRIPTION
$9.99/month, or $59.99/year (save 50%). No free trial. Cancel anytime from your Apple ID settings — your data stays accessible during the cancellation period and is erased completely if you delete your account.
Built in Brooklyn by Mott House LLC.
Privacy policy: https://api.forj.motthouse.com/legal/privacy
Terms: https://api.forj.motthouse.com/legal/terms
Support: support@motthouse.com
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What's New in Forj
1.1.3
July 17, 2026
Offline workouts — log, finish, and sync sessions with no signal. Nothing's lost, even if the app closes mid-set. • Automatic personal-record tracking with a celebration when you hit one. • Smarter, gym-realistic weights in your plans. • Update your profile and units right inside coach chat. • Crash fixes and stability improvements.
MoreSubscription plans
Forj Pro (Annual)
AI coaching, adaptive plans & progress tracking
$59.991 Year








