How can we help?

Luna is an Android food and nutrition journal. Log meals by photo, voice, text, or barcode, review calories and macros, and follow your weight and progress over time.

Luna is in Google Play closed testing. Join the tester group, opt in on Google Play, then install — all with the same Google account. Follow the three steps.

Check that you joined the Google Group and accepted the test invitation with the account signed in to your Play Store. Google Play can take a few minutes to grant access. If it still doesn't work, email support@luna-calorie.in.

Yes. Luna is free during closed testing, with no payment card or subscription required.

Not currently. Luna is an Android app. This website is for information; there's no browser version.

Yes. Sign in with Google or with an email and password. Your account keeps your journal and preferences synced.

Type a description, speak it with the microphone, take a photo of your plate or a menu, or scan a packaged food's barcode. You can also re-log favourites and recent meals.

Be as specific as you can: “200 g chicken”, “2 roti”, “1 katori dal”, or “1 glass milk”. Household measures work, and exact grams give the best results.

Your journal is cached on the device, but turning a description, photo, voice note, or barcode into nutrition needs an internet connection.

Luna tells you it couldn't read the photo and lets you retry or enter the values yourself. It won't log a placeholder estimate.

Right after saving you'll see an Undo option. Later, tap any meal in your journal to open its details and edit items, portions, or nutrition.

AI-assisted estimates depend on the food information and portions provided. They can be inaccurate, so review the results and edit your entries as needed.

Depending on the meal, from product labels via Open Food Facts, a built-in library of 1,028 Indian foods, or AI-assisted estimation. Treat every figure as an estimate.

From your profile and activity level, with default macro ranges within WHO guidance (protein 10–35%, carbs 45–65%, fat 15–30% of energy). You can change them anytime.

No. Luna is a tracking tool for general information. Talk to a qualified professional before making decisions about your diet or health.

Luna uses an account to save your journal and preferences. AI features process the content you submit to provide results. Our Privacy Policy explains what is stored, how it is processed, and your choices.

Yes. Export your history and preferences from Settings as JSON or a spreadsheet, and share it through Android's share sheet.

Go to Settings → Data & Privacy and choose to clear your food journal entries. Your account stays active.

Delete your account from Settings. This permanently removes your data, and the same email can't be used to register again. See the retention details.

Not currently. Luna does not read or write Android Health Connect data.