Is there a client that you can use on desktop and the phone?

Recently was helping someone setup in desktop (primal)... I use amethyst on my phone and was unfamiliar with primal but heard it was easy onboarding.

Had these Qs:

1. What size avatar and banner will fit?

2. Why doesn't Primal prompt the user to save the pvt key somewhere?

If all the clients are different, then a FAQ menu item would be useful:

-Setting up avatar/banner, -connecting wallet (a video would be cool here)

-intro/welcome video with useful hashtags (#introductions, #asknostr) private key vs password, nip05 identification, post a note, upload a photo or video, global feed

That will allow non tech people to get up to speed quickly. 🙏🫂