Today I found out that it’s actually a lot easier to contribute to Open Street Map than I thought. There are some serious gaps in house addresses in my area and I was painstakingly using the built in browser editor in the browser.
But, you can use a FOSS app (available on fdroid) called StreetComplete that makes it a lot easier to help out filling in the gaps in your local map data.
It’s really fun - kind of like Pokémon Go but you are actually making an impact 😁
StreetComplete is intended for local, on-the-ground surveying only. Editing remotely is not supported, and will result in problems.
(I’m not sure whether you’re editing remotely vs reminiscing during in-person visits, phrasing is slightly ambiguous.)