If you haven't tried it yet, I recommend using the Nostr Plebstr mobile client at https://plebstr.com/. It is available for both Android and iOS (it requires TestFlight as it is still in beta, but it works well).

I prefer it to the others I have tried:

Android:

Amethyst https://github.com/vitorpamplona/amethyst

Nostros https://nostros.net/

iOS:

Damus https://damus.io/

Nostur https://nostur.com/

Or web:

Iris https://iris.to/

Snort https://snort.social/

Coracle https://coracle.social/

Yosup https://yosup.app/

Hamstr https://hamstr.to/

https://astral.ninja/

https://www.nostrchat.io/

Do you recommend any others?