Calenta notices likely meals from your Apple Watch — no food diaries, no barcode scanning, no guilt spiral. When it notices one, it asks. You answer with one tap: Small, Medium, or Large, at calorie values learned from your own meals. Anything it misses, you catch in one evening review.
Eating often shows up in your heart rate and wrist motion. Calenta watches for that pattern on your Apple Watch, processed on your devices.
One notification, three buttons. Tap the size and you're done — sized to your own meals, not a database average. Calorie figures are estimates, not measurements.
Every answer tunes Calenta to you: your meal sizes, your patterns, your body. It gets sharper the longer you wear it.
Your health data is processed on your iPhone and Apple Watch. Nothing leaves your devices unless you opt in to the data-contribution program in Settings — see the privacy policy.