There has actually been some progress on integrating GTFS data into OSM: https://wiki.openstreetmap.org/wiki/GTFS

I haven’t yet seen much use of it in the wild though…

Isn’t one hurdle to integrate gtfs data into osm based apps the fact that there is no reliable way to link osm nodes with gtfs nodes? How did they get around that?

Does this mean that access to real time arrival data is on the horizon for osm based apps?

Edit: It appears that a lot has happened since I last checked, how cool!

Reference: https://wiki.openstreetmap.org/wiki/GTFS

I use ntfy and have no problems. It’s very reliable. No idea about graphene though

Have you tried Material Files (it’s on fdroid)? It’s genuinely great and it supports different remote protocols, although I haven’t personally tried this feature.

Wunderground was great before they got acquired by IBM