This app is based upon the 1979 Book of Common Prayer (Episcopal Church). This app uses 44MB of SD Memory space due to the scriptures being stored in a database. This enables you to have the readings available when you are not connected to the internet. The purpose of this App is to provide the complete Daily Office Lectionary scriptures that are normally only listed by their passages. This enables the reader from having to look these scriptures up. I hope you and your family enjoy this App as much as I have enjoyed creating it for use with my own family. This app was redesigned to work with Android 4. 4 (API level 19). Previous reviews of app crashing are no longer valid.