Selfhosting is useful when you either need a lot of storage or a lot of processing power. For example, Kiwix is useful to selfhost on a server because a lot of its content can take up terabytes of storage, which a phone may not have. LLMs are also useful to selfhost because they require a degree of processing power that, again, a phone may not have.
In both cases, there is also a need for perpetual access. If you simply hosted an LLM on your home computer, it wouldn’t be very useful to access from your phone since your computer won’t be running all the time. So, a separate always-on server is needed.
However, there are some selfhosted software that I don’t see a use for. For example, Immich. Immich requires to be run on a server to function, but a lot of (or even all) of its functions are things that could reasonably done entirely on-device. Aves combined with some automatic backup solution such as Nextcloud gets (from what I can tell) most of the functionality Immich offers. Obviously, some features like AI image tagging are missing, but you get the point. AI image tagging is also something that could be run on-device as well, since it’s mostly lightweight (iPhones are capable of it). Having a setup like that also comes with the benefit of automatic backups being completely optional, rather than required.
There’s no reasonable need for extra storage or extra processing power needed for that use case, from what I can tell. (Disclaimer: I haven’t actually used Immich before, so this is speculation. I apologize if I’m missing something obvious) There’s a lot of other selfhosted tools like spotDL which have a selfhosted web UI, but no GUI that can be installed outside of a web browser.
I guess my question is why there are so many selfhosted tools that unnecessarily require being run on a separate device. I do understand the legitimate use cases some of them have, but others seem better off on-device airgapped. This especially became an issue trying to find a notes app for Android that requires no account and runs fully locally, or an RSS reader that loads from the device itself. I found Joplin and Feeder or Read You as the software for each of those. I don’t like “server-based” selfhosting for things that could be done from the device itself.
I’m sorry if this turned into a rant. If someone could help me understand, I would appreciate that very much.
Cheers!
I think collaboration is another thing that’s missing in your answer. Of course synchronization would be one main thing for me to use a photo gallery or note taking app across devices, since I’m often accessing stuff from my phone and my laptop. But I also like to share photos with my relatives and friends, I have shared calendars with my wife to organize our lives. I collaborate on projects and collaborative edit text documents. And sometimes I keep notes and small snippets on technical details mainly for myself, but also share that with the internet, for other people to learn how to install some software or customize it to a niche use-case. And while some of that could be done by separate applications as well, I often use one generic self-hosted platform and have that do everything, disregarding if some of the job doesn’t really need the features. It’s a balance. I’m also sometimes wasting resources and in the end I realize I never needed a self-hosted solution and I would have been better off with a simple and local phone app.