There are a few ways to install or update apps based on the device you are using.
For Amazon devices,
Use the downloader app. once installed from the amazon app store and set up correctly,
you simply need to enter a number (normally 6 digits) which will then take you to a website where you can click and install apps. Simple and easy.
Here are the instructions.
https://www.arcstream.net/post/how-to-update-setup-or-install-apps-onto-your-device-with-the-downloader-app
For Android Boxes or Google devices,
Use the direct link to the download page. once there click on the links to install.
http://xstreamtech.xyz/APKsTest/
For Phones and or tablets.
We created a post about this some time ago, click below to learn how to easily get set up on your phone.
https://www.arcstream.net/post/how-to-use-arcstream-on-your-phone-or-tablet
For Computers
This gets slightly more complicated. but we installing an android emulator that allows you to install the android based apps above. BlueStacks is a great emulator.
bluestacks.com
once installed, you can download any android APK (use the direct link show above to download the files to your device, then you can install them into bluestacks)
TIP: you need a fast computer to process the images and you may also need to change some settings on your PC. use the google to troubleshoot and we will not be able to help.