alt Hacker NewsI've been using Gotify [1] for a very long time and have been quite happy with it. Basically no impact on battery life. For devs - there are mature libraries like shoutrr [2] and apprise [3] that let you support multiple notification systems with no extra work.
Right, but if you use ntfy.sh you can get proper mobile push notifications (instead of keeping the app running and using long polling or websockets).
If you use the public version of ntfy.sh then you don't need to do anything to set this up. If you self-host, you need your own Firebase Cloud Messaging (FCM) account and (for iOS) your own Apple Developer account so you can use APN.