Where do I download the Online Sales Pro mobile app for my smartphone? You can download the Online Sales Pro mobile app for your Apple or Android smartphone. Download for iPhone iOS Download for Android on Google Play Related articles Do I need an OSP account to log in to the OSP mobile app? What is Online Sales Pro? What's the price of Online Sales Pro? How much does a subscription cost? What forms of payment does Online Sales Pro accept? Should I purchase more than one domain?