Can I use the Tidal app for streaming with node 2 without Bluesound app?

@agosto I don't think you are necessarily required to use the Bluetooth function on the Bluesound controller app on your iPad to listen to Tidal. This is what I did and it works well for me ...

In the Bluesound app on your iPad, go to the main menu, select Music Services, select Tidal from the  list of services, and login to your Tidal account from within the Bluesound app. Once you successfully login to Tidal, you should see TIDAL show up in the main menu (right above the Music Services menu item). You can then select TIDAL and start streaming. No need for Bluetooth, and it will sound waaaay better than bluetooth.

Yes I get that but then I am streaming using the navigation of the Bluesound app and not the Tidal App, correct?

You can’t use the Tidal app to stream through the Node2 you have to use the bluOS app. You can do what you’re doing connected by bluetooth. This is from Bluesound support

Most Music Services don't allow third party player systems like Bluesound to play using their App but rely on the Players to use our software to access their servers. Spotify is the one exception to the rule as they have decided to abandon the API model of software development.

Unfortunately, as djones51 mentioned, it is not possible to stream to Node2 directly from Tidal's native app. Same issue with Amazon. If you don't like the BlueOS interface, you can try Roon. It is an additional $10 per month but the features and the ease of use is by far the best that I have experienced. If you also use Spotify, Roon provides a one-stop shop for all the major streaming services.

At any rate, bluetooth is never going to compete sonically with wifi or ethernet.