Extempore is built using the latest technologies, and it's constantly updated to take advantage of new features and security other developers offer. For that reason, we strongly recommend that you only use Extempore on Chrome or Firefox, and that you set your browsers to update automatically. Please visit this page to learn how to update Chrome. Visit this page to learn how to update Firefox. As usual, do not hesitate to contact us if you have any questions. We are always at support@extemporeapp.com.