[Zubersoft]

Wifi should only be required a couple times with the Google Play version: once after purchasing and then again a little while later to verify a refund wasn't issued. If you've been using the app for a month or longer, you shouldn't need wifi anymore. If you are using the Amazon App Store version, then that is a different story. I don't sell MobileSheetsPro on SlideMe (and I stopped selling the original there as well).