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Tracking How-To/Oct 15, 2025/3 min read

Siri can log your meal. Here's how.

The most underused feature in calorie tracking is voice.

BWritten by Bryan Ellis
Tracking How-To

Voice logging is faster than typing. It is roughly equivalent in speed to a photo log for simple meals. And it works in cars, at airports, and at the dinner table where pulling out your phone for a photo would be rude.

CalorieScan AI added Siri support a few months ago. Here are the commands that work.

Quick log

"Hey Siri, log a banana."

Siri interprets the food, sends it to the app, and logs a default serving (one medium banana, 105 cal). Confirm with a wrist tap on Apple Watch or a tap on your phone.

Quantified log

"Hey Siri, log 200 grams of grilled chicken." "Hey Siri, log two scrambled eggs with butter." "Hey Siri, log a tall latte from Starbucks."

The portion and modifier are passed through to the same NLU pipeline used by photo edits.

Saved-meal log

"Hey Siri, log my usual breakfast." "Hey Siri, log Sunday meal prep bowl."

Pulls the saved meal by name and logs it.

Status checks

"Hey Siri, how many calories have I had today?" "Hey Siri, how much protein do I have left today?" "Hey Siri, what's my weight trend this week?"

Siri returns the answer as a spoken response and shows the detail card.

CarPlay

In CarPlay, the only safe interface is voice. Logging your morning coffee or the breakfast burrito you grabbed at a gas station while driving is a real use case. The CarPlay UI shows a confirmation card you can tap when you stop.

Watch

On Apple Watch, raise your wrist and say "log a Greek yogurt." It works without your iPhone present (as long as the Watch has cellular or you're on Wi-Fi). The Watch then either confirms or asks a clarifying question via the haptic interface.

What voice is bad at

  • Multi-component meals. "Log a chicken bowl with rice, beans, salsa, cheese, sour cream, guac, and chips" works but is not faster than a photo.
  • Restaurant menu items the model hasn't seen. "Log the impossible whopper meal large with a Coke" usually works because we've seen it. "Log the nashville hot chicken sandwich from Hattie B's" might need photo confirmation.
  • Edits to past meals. Siri is launch-only; for editing already-logged items, use the app.

Privacy

Siri requests are processed on-device when possible. Anything sent to Apple's servers is anonymized and discarded after fulfillment. CalorieScan does not log the audio. The food name and quantity are stored alongside other meal entries.

Setup

Settings → Siri & Search → CalorieScan AI → enable "Use with Ask Siri." Re-record your "Hey Siri" voice profile if it's stale.

Why this matters

Voice logging is the calorie-tracking equivalent of dictating a text. It feels marginal until you do it once in the car and realize you didn't have to lie to yourself later about what you had for lunch.

The least-friction log is the one you actually make.

Try the app

CalorieScan AI is the photo-first calorie tracker.

Free on iOS. Snap a meal, get the macros, get on with your life.

Download free on iOS