Developer here 👋 You're right, I use an iPhone, so I targeted iOS first since I wanted this solution for myself anyway. But to be honest part of the motivation for building this is because I didn't want to stay walled in to the Apple ecosystem – I want to be able to access my photos from multiple devices, not just Apple ones. So an Android client, if there's enough interest (and indeed, there does seem to be) is on the roadmap. Do add your email (alias) if you're interested :)

At the very bottom there is a button for Android that takes you to a Google Form where you can fill in your info if you're interested in an android version of it. I guess they'll email you when it gets released.