It's called OpenStreetMap, the last character is P, it's singular.
For reviews there are multiple ongoing projects, none of them is mature enough for everyday use, they have a very few content:
There was a long and very interesting thread about this last year on the osm forum: https://community.openstreetmap.org/t/a-crowd-sourced-review-service-for-openstreetmap/136235/24
For timetables, it's an existing standard called GTFS, public transport companies should publish their timetables in this format. Transportr is a mature app which supports a lot of companies and cities: https://transportr.app/
CoMaps (a better fork of OrganicMaps) already have a lot of issues about integrating GTFS feeds, e.g. https://codeberg.org/comaps/comaps/issues/1651