Data Sources
Where every number in the app comes from, and under what terms.
Australian food composition data
AUSNUT 2023 is the primary source. The Australian Food Composition Database (FSANZ) supplies amino acid figures AUSNUT does not carry, and adds foods AUSNUT does not list. Where the two disagree, AUSNUT wins.
Measured leucine is published for only a small minority of foods. Where it is absent, the app estimates it from protein using food-group ratios and labels the result.
Packaged products
Barcode lookups use Open Food Facts, a free crowd-sourced database, under the Open Database Licence (ODbL) and Database Contents Licence (DbCL). Entries are contributed by volunteers and are often incomplete: missing values are shown as blanks for you to fill in from the pack, never as zeroes.
Health Star Ratings are read from the packet as recorded by a contributor. They are never calculated here — an HSR is a regulated front-of-pack claim, and a computed one that disagreed with the packet would mislead.
PWR BALLS® figures
Scaled from NATA-accredited laboratory analysis of each recipe, measured per 100 g and applied to each pack’s printed serve size. No figure in the app is typed by hand; a test fails the build if one is.
Leucine is measured directly by accredited laboratory amino acid analysis.
Where a figure printed on a pack disagrees with the laboratory panel, the app shows the panel and notes the difference on the product.
Exercise
MET values are from the Compendium of Physical Activities (Ainsworth et al., 2011). Frequency, intensity and duration follow the WHO framework; perceived exertion uses the CDC 0–10 scale.