Before you purchase the Premium Version, we strongly recommend you try our free application, print the test page and preview all the other pages. If you are satisfied with results, upgrade to Premium by making in-app purchase on Google Play from within the free application. You'll be prompted to do so prior to printing pages. If paid applicaitons and in-app purchases are not available on your device or country, we'll offer you alternative methods including PayPal.
One-time charge is all it takes to get unlimited printing from your mobile device, all future upgrades and premium support. If you have multiple devices you'll need to purchase Premium Version on each of them separately.
Your purchase is linked to your Google account, so if you change the device for whatever reason, simply initialize the new one under the same Google ID (typically Gmail address) and our applicaiton will switch to the Premium Mode automatically. If you have any questions regarding the Premium Version, please contact our support group for assistance.