Offline use & privacy

LuLinDingo runs entirely on the device you open it on. There is no account, no sign-up, and no login. Your child never types an email, picks a password, or hands over any personal details to start playing. They open the app and go.

Nothing leaves the device

Everything your child does is saved in the browser's own storage on that device. Their level, hearts, XP, streak, finished lessons, stars, quests, fact history, and den all live there and nowhere else. None of it is sent to a server, because there is no server collecting it. We can't see your child's progress, and neither can anyone else.

It works without the internet

Because the app doesn't talk to a server while your child learns, it keeps working when the connection drops. Once the app has loaded, you can put the tablet in airplane mode on a car trip or a flight and the lessons still run.

What this means for you

The trade-off is honest: progress stays on one device, in one browser. There is no cloud backup and no sync between devices.

A few things follow from that:

Progress is tied to the device and the browser. Open the app on a different tablet, or in a different browser on the same tablet, and your child starts from scratch there.

Clearing the browser's data wipes the progress. If you clear site data or "browsing history including cookies," or use a tool that does the same, the saved progress goes with it and can't be recovered.

Several children can keep separate profiles on the same device. Each profile has its own progress, and one child's work never shows up under another's name. They all live on that same device, though.

So pick one device and one browser for your child and stick with it. If a tablet is being replaced or wiped, know that the progress on it doesn't carry over. For most families that's a fair swap for an app that asks for nothing and shares nothing.