The border-free zone is called the Schengen area. There are still some EU member states that aren’t included. Euronews article
“Austria has blocked the accession of Romania and Bulgaria into Schengen, the passport-free area that has abolished border checks between the vast majority of EU member states.”
For guided mindfulness meditation, I’m not sure you need an app, just a recording. I have used these free recordings for years: Mindfulness: Finding Peace in a Frantic World