MuscleBuddy Open Beta Is Live
MuscleBuddy, which adjusts your training and macros from your real progress, is now open to all, free. What it does and how to join.

MuscleBuddy is now in open beta: free, with no credit card and no waitlist. If you train and track, it's built for you, and you can start in the next two minutes at musclebuddy.net.
The problem with most fitness apps
Most training apps hand you a plan and leave it alone. You do the work, you log the sets, and the plan stays the same. A good coach watches the lifts that stalled and the weigh-ins drifting off target, and adjusts the plan around them. We built MuscleBuddy to do that part.
What MuscleBuddy does
MuscleBuddy reads what you log and reacts to it:
- Training that progresses itself. Log your sets and it loads the right weight for today. Hit your targets and it moves you up; stall and it adjusts, across five progression methods, with periodization and automatic deloads built in.
- Nutrition that adapts to you. Set a goal and your macro targets adjust to your weekly weigh-ins, through bulks, cuts, carb cycling, and contest prep, against a database of 7,000+ foods.
- Analytics that go deep (Pro). Volume, frequency, and strength trends broken down by individual muscle group, with body-composition history and symmetry tracking.
- Progress worth chasing. Climb per-muscle ranks from Wood to Legend, top the leaderboards, and go head-to-head in challenges, with every tier earned from logged training.
It also tells you why it made each change, so you can check its reasoning.
Rules you can read
The programming and nutrition math run on fixed rules: the same logged sets and weigh-ins give the same answer each time. AI handles the coaching chat. It doesn't decide your next workout.
Free forever, with a Pro tier when you want more
The core of MuscleBuddy is free, permanently: workout logging with auto-progression, nutrition tracking and macros, weigh-in tracking, progress charts, the recipe builder, the health hub with basic bloodwork, per-muscle ranks, leaderboards and challenges, medication tracking with interaction checks against your stack, the supplement stack interaction checker, the social feed, and full offline logging. No credit card to start.
Pro ($9.99/month) adds the deep-end tools: AI coaching chat, meal planning, the compound library with plain-language explanations, carb cycling and refeeds, reverse dieting, contest-prep tools, advanced bloodwork markers, and advanced analytics.
Train anywhere
MuscleBuddy installs as a progressive web app from your browser, with no app store involved. It works offline, so you can log sets and meals with no signal in the basement of your gym, and everything syncs when you reconnect.
Join the open beta, set your goal, and let MuscleBuddy handle the progression math. Free forever, no credit card.
We're building this in the open, and feedback during the beta changes the product the most. Tell us what's missing.
The MuscleBuddy Team
Product team
The MuscleBuddy team writes the product announcements and release notes on this blog.
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