Stay consistent with a friend

Why a friend helps

Logging food is a small daily chore, and small daily chores are easier with company. Knowing that a friend will notice your streak is a gentle reason to take the photo.

What your friend sees, and what they do not

Your friend sees	Your friend never sees
The display name you chose	Your calories
Your avatar	Your protein, carbs or fat
Your streak	What you ate
Whether you logged today	Your photos
Whether you reached your goal today	Your targets
Your badges

This is not a setting you have to find. It is how the feature is built: the details of your meals stay on your phone and are not sent anywhere for friends to see. The full account is on the privacy-first page.

Setting it up

1. Find your 4-character code in Luca.
2. Send it to your friend however you like, or type in theirs.
3. The other person accepts.
4. Start a challenge if you want one.

Your display name is whatever you type. It does not need to be your real name. Pick one of twelve avatars: six of Luca the poodle and six of Mino, his cat friend, who looks after the friends side of the app.

A streak also has some give in it: one streak freeze a week covers a day you miss, so a single busy day does not send you back to zero.

Challenges that count showing up

Challenges in Luca are about consistency, and there are only three kinds: longest streak, most days logged, and most goal days (days on which you reached your own goal). They are not contests over who ate less. Two people with very different targets can do the same challenge, because each is judged against their own goal.

If it stops being fun

Remove a friend at any time. Comparison helps some people and bothers others; if watching a streak makes food feel like a test, turn it off. Building a logging habit has other ways to stay consistent.