FactSumo works seamlessly wherever you are. iPhone and iPad Devices supported by iOS 12. Download on the App Store Android Phones made in the last 3 years Get it on Google Play Web Go to www.factsumo.com FactSumo is supported in these modern browsers CHROME(latest) Download FIREFOX(latest) Download SAFARI(latest) Download INTERNET EXPLORER(latest) Download We also support most mobile browsers including Safari on iOS 10.3, the Android 4.0+ browser, and Internet Explorer on Windows Phone.