Free tools
Three tools you can use without an account
Everything here runs in your browser and works whether or not you ever sign up. No account, no email, no trial that expires. They use the same research and the same formulas as the app itself, which is deliberate: the easiest way to judge a health app is to check its arithmetic before you hand it anything.
Movement Library
85 exercises with original illustrations, form cues, difficulty ratings and progression chains. Filter by any of eight movement patterns, or by the equipment you actually own — down to nothing at all.
Browse the libraryMacro calculator
Your daily calories, protein, carbohydrate and fat, with every step of the derivation shown and cited: basal rate, activity multiplier, goal adjustment. Your height, weight and age never leave the browser.
Work out your macrosLongevity quiz
Ten questions on sleep, movement, nutrition and stress, scored against published research and returned as a read on where your habits already help you and where they cost you.
Take the quizNone of these is a medical assessment, and none replaces advice from a clinician who knows your history.