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 😁
To contribute changes, yes. You still can share information as an anonymous user with OSM Notes, but then you need to be clear and a bit exhaustive. You can add a note that says “7-eleven” and a mapper can easily add it later, but for a restaurant called “The Coast”, for example, you need to explicitly write in the note that it is a restaurant serving seafood, details of the address and opening hours would be great too.