Related: Now Facebook has been pushing the Moments app to share photos. I don't want to use it but a lot of people around me do.
Can anyone recommend an alternative photo sharing app?
That's true. I've been considering the idea of building my own personal replacement for several Google services - Keep, Drive, and Photos mainly. Haven't decided it's worth the effort yet.
I've been tempted to look into things like ownCloud (https://owncloud.org/features/), but I just haven't been excited by what I've seen so far. What I'm thinking of is more of a single user web app that I build myself so that a) it does exactly what I want and nothing more, b) I know exactly how it works and what it does with my data, and c) there are no other users to support.