MuscleFuel AI
Train smarter.
Bulk faster.
One app for the iron and the kitchen. AI generates your push/pull/legs plan, the protein tracker hits your daily target, and the bulk chart actually moves — in weeks, not months.
Three apps for tracking. Zero for building muscle.
A macro tracker. A separate lifting log. Some spreadsheet for body weight. MuscleFuel AI is what happens when you stop accepting that. One app where the workout plan and the protein target talk to each other — because the goal is the same.
Score every source. Hit the leucine threshold.
It’s not just grams. The AI Source Analyzer scores each protein on quality, complete-amino profile, and leucine content — the actual driver of muscle protein synthesis.
Whey isolate? Elite grade, 3.2g leucine, 98 quality score. Plant blend? Tell you what to stack it with to hit the threshold.
- Quality scoring — PDCAAS, DIAAS, leucine grams per serving
- Amino profile visualized — gaps flagged, complementary foods suggested
- Absorption timing — pre, intra, post, before bed — matched to your training window
The stack a lifter needs.
Built around the cycle a serious trainee runs every week: plan the split, hit the gym, log the lift, eat the protein, see the chart move.
AI Workout Planner
Tell the coach your goal (bulk, lean bulk, cut, recomp), your split preference (P/P/L, full body, upper/lower), and your available days. The AI builds a real progressive-overload program. Custom programs in Pro.
Voice Protein Log
“Two scoops whey post-workout” — tap, talk, logged. The voice engine catches macros from natural speech and slots it into your day.
Lift Log
Sets, reps, RPE, history. PR alerts when you hit a new max. Pro: unlimited history.
Macro Coach
Bulk, lean bulk, cut, recomp — protein, carbs, fat targets math’d for your phase and body weight.
Bulk Progress
Body weight + measurement trends with smoothing. Tells you if you’re actually growing or just bouncing.
AI Nutritionist
Meal plans tied to your training day. Push day gets more carbs. Off day shifts the macros. Doesn’t just spit out generic templates.
Programs — beginner to advanced
Built-in proven splits: Starting Strength, 5/3/1, PPL, Stronglifts 5x5, Upper/Lower hybrid. Pick one, the app autofills your week. Pro builds a custom program around your equipment and goals.
Log a meal in the time it takes to drink it.
Voice. Barcode scan. Label scan. Or photo — the AI analyzes the plate and breaks it into macros. Whichever’s closer to your hand.
- Voice: “Two cups oatmeal, peanut butter, banana”
- Barcode: point at the protein tub, instant log
- Photo: camera at the meal, AI breaks it down
- Manual: the standard search-and-tap fallback, with a database that doesn’t miss obscure brands
Free covers the basics. Pro builds the program.
Free includes the dashboard, manual protein logging, basic lift logging, and core macro math. Pro unlocks the AI workout plan generator, voice + photo + barcode food log, protein source intelligence, and unlimited lift history.
- AI workout plan generation
- Voice + photo + barcode food log
- Protein source intelligence scoring
- Unlimited lift history + PR alerts
- Custom training programs
Iron
and the kitchen.
Free to download. Pro starts with a 3-day free trial. Cancel anytime in Settings > Apple ID > Subscriptions.
Start Free Trial