Just the Carbs for Android

Scan the packet. Get the carbs for your portion.

Point your phone at the packet, type how much you’re having, and the app does the sum. No account, no ads.

Just the Carbs result screen for a chocolate sprinkle product with 67 g carbs per 100 g. For a 35 g portion the answer reads 23.5 g carbs, about 23 g whole grams. — **Fig. 1**A 35 g portion of a product with 67 g carbs per 100 g: 23.5 g.

Get the food in front of the app however you can.

Scan the barcode and the product loads. No barcode, or no luck? Search by name or brand, or scan the nutrition label. You can also read a barcode or label from a photo, or share one in from another app.

The Just the Carbs home screen: a search field, a large Scan barcode action, a Scan nutrition label action and an Enter manually link. — **Scan barcode**The first action on the home screen.

SearchResults for “hagelslag”, each with carbs per 100 g.

The app reading the nutrition table from a photo of a cheese packet, with corner handles around the table. — **Nutrition label**Reading the table from a photo of a packet.

Product data comes from Open Food Facts. It can be missing or out of date, so check it against the packet. You can correct a value and save your own.

Portion calculation

Enter what you’re eating. Read the answer.

The result leads with one decimal place, with whole grams beneath it. Portions can be in grams or millilitres, and for some foods in slices or pieces.

The answer panel from the result screen: CARBS 23.5 g, about 23 g whole grams, with the buttons Add to meal and Add and scan next. — **Fig. 2**The answer panel, with the buttons that follow it.

Homemade dishes

Cooked a big pot? Add it up once.

Add the ingredients, then split the dish into equal portions or weigh the finished result and take your share. Save it, and next time all you choose is the portion.

Soup, four equal portions

Example

Ingredient	Per 100 g	Weight	Carbs
Potatoes	16	500 g	80.0 g
Carrots	7	200 g	14.0 g
Lentils	20	100 g	20.0 g

Carbs in the pot114.0 g

One of four portions28.5 g

Illustrative numbers, not a recipe or food data.

Saved foods and offline use

The foods you eat often are already there.

Favourites and saved foods

Mark a product as a favourite, or save a food or dish of your own, and it’s one tap away. No scanning it again, and no retyping the label.

Usual breakfast cerealper 100 g
Oat drinkper 100 ml
Saturday soupper portion

Examples of the kinds of food people save. Not data.

Offline, for what you’ve used

Foods you’ve looked up before, and your saved dishes and portions, work offline. Looking up something new needs a connection.

Been in a shop with no signal? Foods you’ve used before still calculate.

Adding up a plate? Keep a running total.

Add each food to the meal and the app keeps one total while you work. It’s a temporary tally: no names, no diary and no history. Clear it and start again.

MealExample

Bread, 60 g27.0 g
Chocolate sprinkles, 20 g13.4 g
Milk, 250 ml12.0 g

Total carbs52.4 g

Illustrative numbers, not food data.

Protein is there if you want it.

Switch protein on and the app shows it beside the carbs for a food. The figure comes from Open Food Facts product data, and carbs always stay the main answer.

It isn’t read from label scans, and it isn’t added up across a meal.

The free web calculator has its own Show protein switch. There you type the protein per 100 yourself.

Get it on Google Play.

1Open Google Play on your Android phone.
2Install Just the Carbs.
3Scan something in your cupboard and enter your portion.

Open the Google Play listing

Android · No account · No ads

It doesn’t calculate insulin, and it isn’t a diet tracker. Check product values against the packaging.