

From my 10 minutes spent on it, Interactive Brokers seems like the way I’d go for a long-term ETF style EU investment broker, and I’d run from Trade Republic based on a few negative experiences I just read about.
While they have an app, I see references to a desktop tool, as well as online, so I think that’d resolve your phone issue. Might be worth a look.
Saw a couple mentions to using their Irish entity, likely to do with tax benefits, not sure, should look into that more too.

Civility and society are a social contract, if someone rips theirs up to free themselves from its restrictions, they also remove themselves from its protections.