Hey ZEN!
Currently the main game does not have any voice overs for dialogue or sex scenes. One of the dreams does have some voice work, though.
We also have a very handy Android installation guide if you have any issues: https://zanithone.itch.io/a-house-in-the-rift/devlog/583030/android-installation...
Glad you're enjoying the game though and thank you for your kind words! We'll do our best to keep bringing content y'all enjoy :)