https://f-droid.org/en/packages/de.westnordost.streetcomplete/

This is the most addictive thing I've done in a while. It's rare to find something where just two clicks can help in a bigger project, and at least where I live there are thousands on tiny dots to check

There's also a more powerful version of it called SCEE

I wish they'd get people to verify transit schedules literally the only reason Google maps finds itself on my phone

Same I use it so much. Really fun to fill in info

Wooow! Now that's a fun and useful game like I've been searching for a while! Downloaded count me in!!!

O7