Many sites actually have very user-friendly apps.
I've played on a lot of them, so I know what I'm talking about.
But personally, I still prefer playing on websites rather than through apps. It's more convenient for me. And I usually play at home on my laptop. I have everything on my laptop: cryptocurrency wallets, forex, and gambling.
At the moment I'm playing on a site like this
https://eaglepay.io/ and I would especially recommend playing here now.