Disclaimer: not strictly EU, but European.
I’ve been using their email service for a while; just recently transferred all my domains from Namecheap to them. I think this step is laudable, especially some of the things he wrote in the announcement email that went out.
Came across this app recently and boy does it work smoothly! Here’s part of the description from the developer:
“ONE APP FOR ALL OF EUROPE
Europe has some of the best public transit in the world. But every city has its own app, its own maps, its own systems.
Abfahrt! brings together over 100 official transit data sources, from Berlin's BVG to Vienna's Wiener Linien, Zurich's ZVV and Stockholm's SL, all in one app.
No ads. No tracking. 100% native Swift.”
It’s modern and so easy to use. Developer is most likely based in Germany, Austria, or Switzerland given the app’s name.