Food logging

Log your meals, see what they do to your glucose

Log food with a photo, a barcode, or a few words, then see the glucose response that followed. Part of Glynce Plus.

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A logged salmon poke bowl in Glynce, with the glucose curve it caused over the following hours

Log food by photo, barcode, or description

Logging food is the part people give up on first, so Glynce gives you a way in whatever the moment allows. These ways of logging are part of Glynce Plus.

Scan a barcode

Point the camera at the packet. The barcode is read live, so anything with a label is logged in a second or two.

Photograph the meal or its label

Snap what is on the plate for food that never had a packet, or shoot the nutrition label when a barcode comes up unknown. Either way, Glynce reads it and works out the nutrition.

Describe it in a few words

No packet, no camera, no patience. Type what you ate in plain language, in whichever language you think in, and Glynce fills in the rest.

Search the food library

Search for it, or save your own foods and recipes once and reuse them. The meals you eat every week stop being work.

Why log your food at all?

You already know roughly what you ate. What you cannot do is ask a question of a meal you never wrote down.

Ten seconds now, an answer later
Logging costs you a moment at the table. Not logging costs you the answer three weeks later, when you are trying to work out why your Thursdays keep going wrong and there is nothing to look at.
The meals you repeat stop being work
Most people eat the same twenty things. Save a food or a recipe once and it is one tap from then on, which is what makes logging survive past the second week.
You can fix it afterwards
Portions get guessed and meals get logged late. Any entry can be edited or removed after the fact, and a meal's time can be corrected, so a rushed log is still worth making.
It does not stay locked in Glynce
Carbohydrates, calories, fat, protein, and water are written back to Apple Health, so the rest of your apps can read what you logged and you are not building a diary you can never leave.
Logging a meal in Glynce by describing it in a few words

See how each meal affects your glucose

A food diary that only counts carbs tells you what you ate. It does not tell you what it did to you. Every meal you log lands on your glucose chart at the time you ate it, with the two hours after it measured: where you started, where you peaked, and where you ended up.

That is where the useful part is. The same pasta at lunch and at dinner can behave differently. Porridge that everyone calls slow can spike you and nobody else. You stop arguing with general advice and start reading your own glucose response.

The photo option in Glynce's food capture screen

Carbs, and the three that get forgotten

Glynce logs carbohydrates, protein, fat, and calories, because the other three are why a meal sometimes fails to behave. A high-fat meal can flatten the rise and then push you up hours later, long after a carb-only log would have called it done.

Portions are handled properly too. Nutrition is stored per 100 g and scaled to what you actually ate, so half a portion is half the carbs rather than a guess.

A Glynce glucose card showing the current reading and recent trend

Food logging questions

Is food logging free in Glynce?

Partly. Entering a meal's calories yourself, using foods you have saved, and building a recipe by hand are all free. Photographing a meal or a label, scanning a barcode, describing a meal in words, and searching the food database are part of Glynce Plus, as is the glucose response after a meal.

How does Glynce work out the nutrition in a photo?

The photo is analysed by an AI model through Glynce's own server, which returns the food and its macros for you to check and adjust before saving. Because the work happens on a server, photo, label, and description logging all need an internet connection.

Where does the barcode data come from?

Glynce checks its own cache first, then Open Food Facts, then the USDA branded food database. If none of them know the product, Glynce offers to read the nutrition label from a photo instead, so an unknown barcode is not a dead end.

Can I change a meal after I have logged it?

Yes. Any entry can be edited or deleted, and a meal's time can be corrected if you logged it an hour after you ate it. Correcting the time matters, because the glucose response is measured from the moment the meal started.

Does Glynce write my meals to Apple Health?

Yes, once you grant access. Carbohydrates, energy, fat, and protein are written for every meal, and water for every drink you log, so anything else you use can read them.

Find out what your food actually does

Free on iPhone

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