Licenses
Licenses and credits
What this site is built with, and under which licenses.
What the site uses
The pages use your device’s own system fonts and no third-party code. The only script from outside this site is our self-hosted Umami counter (see privacy).
| Part | By | License | Used for |
|---|---|---|---|
| Figtree | The Figtree Project Authors | SIL Open Font License 1.1 | Lettering drawn into the share image and the app icons (not served as a font) |
The license text is at openfontlicense.org.
Formulas
The worked example on the home page uses two published one-rep-max formulas: Epley (1985, Boyd Epley Workout) and Brzycki (1993, Journal of Physical Education, Recreation & Dance 64(1)). Pounds are converted with the exact definition 1 lb = 0.45359237 kg. When the calculators ship, every formula and coefficient set they use will be listed here with its source and date.
Our own work
The pages, the worked example, the barbell drawing and the TrainSums plate mark are our own work.