Copy Space lets you copy in text, links, images and documents for you to conveniently copy and paste where you need it. Keep your Copy Space synced across all supported devices using OneDrive when you purchase the in-app product.
Other features include:
One tap copy to instantly copy to operating system's clipboard
Keep a history of previously deleted copies
In order to sync between platforms, do you have to purchase the feature each platform?
Each platform requires their own purchase of the sync feature. For example, purchasing on Windows 10 will allow you to sync across all Windows 10 and Windows 10 Mobile devices provided you use the same account. If you then want to sync to your iPhone/iPad, you will need to make the purchase on iOS as well.