Train hard. We'll do the math.
MuscleBuddy reads the sets you actually logged. It moves the weight up when you've earned it, nudges your macros off your weigh-in trend, and tells you why every time.
It runs right in your browser — add it to your phone's home screen (no app store) and log your workouts and meals at the gym, even offline. The desktop view is there when you want to sit down and plan.
Shown on desktop, built for planning & analytics. On your phone it's just as capable for logging at the gym.
Log 20 of your first 30 days — plus 10 workouts.
Win a full year of Pro — free.
Join during the open beta, then log a qualifying day — a daily check-in and at least one meal on the same day — on 20 of your first 30 days, and log at least 10 workouts in that window. The first 100 people to finish earn a full year of Pro, on the house. Your personal 30-day clock starts the day you opt in, so joining early only helps.
20/30
qualifying days + 10 workouts in your first 30
First 100
to finish win the reward
1 year
of Pro, on us
Opt-ins are open for a limited time. Free to enter — no credit card required.
Everything you need to progress
Comprehensive enough for a competitive bodybuilder. Approachable enough for someone just trying to lose 20 lbs.
Smart Progression
The weight goes up when you clear your targets, not when a calendar says so. Five progression methods, automatic deloads, and a reason attached to every change.
🥗Adaptive Nutrition
Macro targets that move with your weekly weigh-in trend — through a bulk, a cut, carb cycling, or contest prep.
📊Deep Analytics
Pro reads your training back to you: per-lift reports, a volume heatmap, and correlational analytics that show whether more volume, your calories, or your recovery are actually driving results — with bloodwork trended over time.
🩺Health & Recovery
Log bloodwork and vitals, track a daily recovery score, and screen supplement stacks for interactions.
👤Coach Tools
Manage clients, review check-ins, and build reusable program templates — all in one place.
🏆Earn Your Rank
Climb per-muscle ranks from Wood to Legend, top the leaderboards, and go head-to-head in challenges — every tier earned from real training data.
See it in action
Real screens from the app — not mockups. This is what you log into.
Thirty seconds of the real app — tap to watch.
Nutrition
Hit the number, not a guess
Every meal, every gram of water, and a calorie and macro target that moves with your weekly weight trend instead of a calculator you filled in once.
Training
Today's session is already written
Your phase, your split, and the lifts you're doing right now — loaded before you walk in. Behind them sit every workout, every PR, and the bodyweight trend that tells you whether the block is working.
Pro analytics
Read your own training
A per-lift report that flags what is progressing and what is stalled, weekly volume balanced across every muscle, correlations, and bloodwork trended against reference ranges — every number traces back to a rule you can see, not a black box.
Ranks & leaderboards
Earn your standing
Levels, achievements, and a global top 50 — every point of it scored from work you actually logged. There is no way to buy a rank here.
Nutrition ranks
How well you ate, not just what
Four rings grade your macros, your consistency, the quality of the food itself, and whether the week actually served your goal. They fold into one tier — and a board of everyone else chasing it.
Health & recovery
Train the body, not just the lifts
A daily recovery score from your sleep and vitals, a one-tap check-in, and bloodwork logged and trended against reference ranges — so the plan reacts to how you actually are, not just what you lifted.
Anywhere
The whole thing, in your pocket
Install it, walk into a basement gym with no signal, and log every set. Workouts and meals sync the moment you reconnect.
Explore it free — no account needed
The same exercise library, calculators, and programs the app runs on — open to everyone, no signup required.
Exercise Library
Step-by-step technique, target rep ranges, and the muscles each exercise trains.
Browse exercises →Free Calculators
8 strength & nutrition tools — 1RM, TDEE, macros, plate loading, RPE, reverse-diet. No login.
Open calculators →Workout Programs
Hand-picked training splits — PPL, Upper/Lower, full body, LPPLU — with week-by-week breakdowns.
See programs →Training & Nutrition Blog
Evidence-based articles on lifting, progression, and eating — no fluff, plenty of citations.
Read the blog →How it works
Set your goal
Bulk, cut, recomp, or maintain. Tell us your experience level and available equipment.
Train & log
Log your sets in seconds. Today's session is already loaded — the lifts, the weights, the target reps.
Watch it adjust
Clear your targets and the weight goes up. Stall, and the plan adapts — and shows you the sets behind the change.
Simple pricing
Start free. Upgrade when you're ready.
Free
$0
Forever free
- ✓ Workout logging
- ✓ Auto-progression
- ✓ Nutrition tracking & macros
- ✓ Recipes & food logging
- ✓ Muscle & nutrition ranks, leaderboards
- ✓ Challenges & achievements
- ✓ Social feed
Pro
$9.99
per month
- ✓ Everything in Free
- ✓ AI coaching chat
- ✓ Meal planning
- ✓ Carb cycling & refeeds
- ✓ Bloodwork & compound tracking
- ✓ Contest prep tools
- ✓ Compounds interaction checker
- ✓ Per-lift progression & volume analytics
- ✓ Wearable-driven training readiness & auto-deload
Your 14-day free trial converts to a paid Pro subscription at $9.99/month when it ends — cancel before day 14 to avoid any charge. Paid plans are billed monthly and auto-renew each month at the then-current price until you cancel. Cancel anytime from your billing settings to stop future charges — you keep access through the end of the current billing period. Except where required by law, payments are non-refundable and the current period is not pro-rated on cancellation. See our Terms of Service for full subscription, auto-renewal, and refund terms.
Ready to stop guessing?
Create an account, log your first session, and the next weight on the bar comes from your training — not a template.
Create your free account