If you can't find it in the store I'll post the link to where I got the APK below (Tarun Vats is a reputable source and I trust him) once it is installed Home Up will be available by going to Settings > Home Screen > More Customizations (at the very bottom of page)
On the Home screen of your phone pinch the screen you will see widgets and wallpaper and settings click the settings scroll all the way down click more settings and there you will see Home up
