Lean phase done. Build to 85 kg.
Body fat is down to 14.5% and your lifts held through the Lean phase. Chest and delts are now the ceiling, so the extra food and the new work go there first.
Plan on Sunday at your desk. Lift from the tablet on Tuesday. Shop from your phone on Thursday. One plan moves through all of it.
10 free logs, no card. Then $25 a month.
10 free logs, no card.
Progress read, trends, every proposal in one pane.
Every proposal starts from your own data: a check-in, a lift, the scale or your recovery. It shows what it found, proposes one linked change and waits. Accept, and every part of the plan it touches moves at once.
Visibly leaner than baseline. Midsection flattened.Delts and chest mass are now the ceiling.
Body fat is down to 14.5% and your lifts held through the Lean phase. Chest and delts are now the ceiling, so the extra food and the new work go there first.
Nutrition, training, body, analysis and health read from the same data, so a change in one shows up in the others.


“I did it the hard way. So I built the coach.”
Back in 2020 I got here on spreadsheets, macro math and second-guessing, with no coach. So I built the coach I needed, in one app: it reads my logs, my photos and my recovery, moves my food and my training together, and waits for my yes.
Augustine, founder
Both photos are from before Muscle Bvll existed. Every screenshot on this page is the real app.
Lifters who train for muscle and want a system behind it. Nutrition, training and body tracking in one place, plus an AI that reads your progress and moves the plan. You bring the effort; it runs the plan.
Or $250 a year, 2 months free · Cancel anytime · Excl. VAT, calculated at checkout · Web billing price; App Store pricing may differ · Available Now
Between signing up and your first session

Your plan is ready
Between your old app and this one
Or any spreadsheet: CSV, Excel or Google Sheets, in any layout. It works out the columns itself.
Start from zero, or bring your history.