A'ight. So this is all in Chrome, and I don't know if this works on every computer, so don't judge me if you don't see these options cuz it ain't my fault.
To turn a website you visit often into an app, go to the website first. Then click the three dots here near the top right corner of your screen. Then, there should be a "More tools" option, click it. Then click "Create shortcut". Change the name to whatever. Mark the thing that says "Open as new window". Done. To see how to do this with pictures, there is a guide on a Spinner Wheel I use. I've done this with a few things, Pandora, Dictionary.com, and Thesauarus.com. It's not technically an app, but it basically functions as one.
Spinner Wheel + Guide