Exercise calorie estimates are rough and often high, so “Half” is the default.
AXON works fully without a key. The AI coach is optional: it uses your own Anthropic key, bills your own account, and the key is stored only in this browser.
AXON gives general fitness estimates, not medical advice. Talk to a doctor or registered dietitian before major diet or training changes, especially if you are under 18, pregnant, have a medical condition, or have a history of disordered eating.