on Gemini

Android apps

Ariadne
opens links from other apps
crashes a lot
Deedum
has a neat feed reader
doesn't open links from other apps
Lagrange (yes, a port!)
https://skyjake.github.io/fdroid/repo/
or
see their gemlog's "Android" topic for apk links
[WWW] [Gemini]
or
see the Git repo
is very alpha

Hosting sites I'm acquainted with

Both support custom domains and same-address http hosting so you can be linked with //example.com/ URLs.

The FAQ lists some more under section 3.3.