Puddle Patrol

Know before they go.

Open the app Try the demo

Replace these three

One point per card, each about what someone GETS rather than what the app has. "Your notes are on your device" beats "local-first storage".

Works offline

Open it with no signal and it still runs. It updates itself quietly when there is one.

Install it, or don't

It runs in a browser and installs to a home screen from the same address.