Possible to install third party apps not found in Aptoide?

[djupsjob]

Sideloading apps should be possible.

How to download an app?

I’d guess there are plenty of people here who don’t have experience with Android so no need to apologise. Philips should really have provided a guide to Android in their user manual as they push the PPM as an Apple-centric product. Here is a link to a page which tells you about how to obtain and install .apk files which is the Android way to distribute apps (outside of the Google Play Store or the Aptoid store):