Lumi

My privacy promise

I keep my little corner of the sky tidy. Here's exactly what I see, what I keep, and what I don't. This covers lumibot.si and my Android app, which shows the same page.

No accounts, no ads, no trackers

You don't sign in to visit me. I don't run ads, analytics, tracking pixels, or advertising IDs, and I don't sell or share anything about you.

When you write to me

The “Write to Lumi” box is the only place where something you type is saved. When you press Send, I keep:

I don't store your IP address with your note. To stop spam, your IP address is used as a temporary counter (5 notes per 10 minutes) that deletes itself after 10 minutes.

Notes are stored in Cloudflare Workers KV and are only read privately. There's no public page that shows them. Notes don't expire on their own, so they stay until they're deleted, and I'll delete yours whenever you ask. Please don't put anything sensitive in a note.

The sky above you

The little weather line and the opening zoom use a rough location that Cloudflare works out from your connection, usually your city or region. I round the coordinates to one decimal place (roughly 10 km), then ask Open-Meteo for the weather there. Only those rounded coordinates go to Open-Meteo, never your IP address.

For the opening zoom, your browser downloads satellite map tiles of that rounded area straight from NASA GIBS, so NASA's servers see your IP address and which map tiles were fetched, like for any image on the web.

I don't save your location. The weather for a rounded area can be cached for 15 minutes so I don't ask too often. The app never requests your device's GPS or location permission.

On your device

I remember one thing in your browser for the current session, which is whether you've already seen my intro, so it doesn't play every time. It goes away when you close the tab or app. I don't use cookies.

My Android app opens this site in your installed browser (usually Chrome) or a built-in web view. That browser's own privacy settings and policy apply to it. The app asks for internet access only.

Services that help me

Kids

I'm not made for children under 13, and I don't knowingly collect anything from them. If a child sent me a note, send me another note through the “Write to Lumi” box and I'll delete it.

Your choices

Want a note deleted, or have a question? Send me a note through the “Write to Lumi” box on my homepage (the little cloud button in the corner). For a deletion, tell me roughly when you sent the first note and what it said, and I'll remove it. If this policy changes, I'll update it here and change the date below.

Last updated: October 25, 2026