Go to
http://apps.evozi.com/apk-downloader/
Copy and paste the url for the andriod app in the entry box and hit generate download link. Should give you a link to download it from. I usually click the "QR Code" link and then use the software on the blackberry to scan then on my computer screen to download.
I couldn't get it to work properly on my blackberry it always said upon connection that the password was wrong even when I made sure it wasn't. It might have been the software itself as it has been over a year since release and now with Fusion going to be released in the future I highly doubt the app will get any updates at all.