Windows Vista (32/64) with latest service packs or later versions of windows including Windows 7, Windows 8, and Windows 10 (excluding Win RT).
Available on the Downloads page.
Mac OS X 10.6 (Snow Leopard) or above
Available on Downloads page.
iOS 8.0 or above
iPad 2 or newer
Available on iTunes App Store.
Chrome OS version 50 or above
Available on Chrome Web Store.
Android 4.2.2 Jelly Bean or above
Available on Google Play.
Some Android devices will not be compatible due to various internal components. This may also be the case for tablets that meet the system requirements. If you are buying Android Tablets for a school or are in doubt whether the tablets you already have are compatible with our app, please contact us and let us advise you on what testing we have done with that device. Please contact us in English at firstname.lastname@example.org. Thank you!
Windows 10 (version 1511, Threshold 2) or above
The maximum quantity of an item that can purchased in each transaction is 99.
To inquire about purchasing more than 99 of one item, please call 800-362-4308.
To inquire about purchasing more than 99 of one item, please call 800-362-4738.