This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
App wise I recommend just using the progressive web app (install website as app). It works very well, and you always get the latest updates.
For the server, find one that targets one of your interests.