There IS a way to get (some) android apps to run and you don't have to have a unix based system to do it. Any system that can run the latest Chrome Browser (37 and up, as already mentioned) can do it to an extent. How do I know? Just tried it! Why? I just purchased a nifty little dongle from the UK called Trigger Trap that allows you to control a Camera in a lot of different ways (including long exposure) via their free Android App. Main issue with the app is it doesn't have a night mode. I already contacted the developers about that. Anyway, I digress.
My main interest in seeing if there were some way to get an android app running on my laptop was because, at the moment, all of my scope control stuff is in my Win7 laptop. I had nothing that would control my Olympus camera from it though. Searched as I may, couldn't find a single Windows Program that would do it.
So, I started looking into ways to run the Trigger Trap app from my laptop. I tried a program called Andyroid that runs android in a virtual machine. No good. Pegged my CPU and was REALLY slow. Gave up on that and kept hunting. Then I stumbled on this Chrome thing. Wasn't having much luck with that either but I kept at it and finally found a combination of stuff that worked!
First, check out this article's first half related to installing the ARChon runtime (NOTE: If you click the ARChon runtime link, it will download). Forget the rest of the stuff on the page about packaging Apps.
Second, go to Google Play on your tablet or Smartphone and download and install ARChon Packager. Running this app allows you to "package" any app on your android device into a zip file. You can either send it to yourself via email, or if you have a file manager you can move it from the ARChon Package folder that the app creates in your main storage to an SD card or USB stick.
I created a folder on my desktop for the packaged apps and copied them there. Once in there, you have to unzip them. Best to tell whatever unzipping program you're using to unzip to a new folder within the App folder.
After that, follow the instructions in the Lifehack article about how to load them into the Chrome Browser.
One of the other articles I read stated that an app, once installed as an extension in Chrome would show up as a new Icon in the Chrome App window in the top right of the browser. This didn't happen for me. However, if you go back to the extensions and look at the app you installed as an extension, you will see a little line that says "Launch." I did this and Trigger Trap loaded and appears to be 100% functional.
Once loaded, the app is stand-alone. I don't need the browser open to keep it running.
Apparently, this will not work for any paid apps at this time and there are no guarantees of ANY particular App being able to be run this way. Lots going on around this right now and there may be improvements down the pike.
Bottom line. It worked for my immediate needs.
As a side note, I did try it on SkySafari 4 Pro. No joy.
If you're interested in Trigger Trap, the app is here and their Web Site is here. They have Dongles that will run a lot of popular cameras.