I've seen people mention before that they'd like notifications for when certain npubs post to Nostr. Nostur on iOS does this already. For us Android folks, I'm assuming that this could be done with Pokey. Maybe nostr:nprofile1qqsxg45ph8gx0vdrvtzta6xal7v86frx6jvstsnvhrlvtehmwwh4epqpzamhxue69uhhyetvv9ujuvrcvd5xzapwvdhk6tcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz9nhwden5te0v4jx2m3wdehhxarj9ekxzmny9ua2vh28 could implement a subscription section, where you can add npubs to subscribe to, and you'd get notifications for when they create a new note. The technical hurdle here would be then subscribing to that npub's relays and watching them for new notes and having to do so for every npub that you're subscribing to, right? That doesn't sound efficient or battery friendly. Maybe another, better method exists?