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Philipp Heckel 2021-12-05 15:57:37 -05:00
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@ -22,23 +22,24 @@ client network disruptions.
## Can I self-host it?
Yes. The server (including this Web UI) can be self-hosted, and the Android app supports adding topics from
your own server as well. There are <a href="https://github.com/binwiederhier/ntfy#installation">install instructions</a>
on GitHub.
your own server as well. Check out the [install instructions](install.md).
## Why is Firebase used?
In addition to caching messages locally and delivering them to long-polling subscribers, all messages are also
published to Firebase Cloud Messaging (FCM) (if `FirebaseKeyFile` is set, which it is on ntfy.sh). This
is to facilitate instant notifications on Android.
</p>
is to facilitate notifications on Android.
If you do not care for Firebase, I suggest you install the [F-Droid version](https://f-droid.org/en/packages/io.heckel.ntfy/)
of the app and [self-host your own ntfy server](install.md).
## How much battery does the Android app use?
If you use the ntfy.sh server and you don't use the <i>instant delivery</i> feature, the Android app uses no
additional battery, since Firebase Cloud Messaging (FCM) is used. If you use your own server, or you use
<i>instant delivery</i>, the app has to maintain a constant connection to the server, which consumes about 4% of
battery in 17h of use (on my phone). I use it and it makes no difference to me.
If you use the ntfy.sh server and you don't use the [instant delivery](subscribe/phone.md#instant-delivery) feature,
the Android app uses no additional battery, since Firebase Cloud Messaging (FCM) is used. If you use your own server,
or you use *instant delivery*, the app has to maintain a constant connection to the server, which consumes about 4% of
battery in 17h of use (on my phone). I use it, and it makes no difference to me.
## What is instant delivery?
Instant delivery is a feature in the Android app. If turned on, the app maintains a constant connection to the
[Instant delivery](subscribe/phone.md#instant-delivery) is a feature in the Android app. If turned on, the app maintains a constant connection to the
server and listens for incoming notifications. This consumes <a href="#battery-usage">additional battery</a>,
but delivers notifications instantly.