The difference: Your phone doesn't get notifications from your notification service directly, but from Mozilla which helps to hide your digital fingerprint of you using a separate notification provider like ntfy. Prism also allows Telegram or Signal to act as a notification distributor.
In addition, I use Proton Mail which doesn't really allow custom notification services. Prism has a custom integration to work around that so your proton mail notifications don't have to touch google services.
The difference: Your phone doesn't get notifications from your notification service directly, but from Mozilla which helps to hide your digital fingerprint of you using a separate notification provider like ntfy. Prism also allows Telegram or Signal to act as a notification distributor. In addition, I use Proton Mail which doesn't really allow custom notification services. Prism has a custom integration to work around that so your proton mail notifications don't have to touch google services.