Sunday Lectionary is an iPhone app developed by James Coates that aims to provide a convenient way for users to access the complete Year A, B, and C Sunday Lectionary scriptures. Based on the 1979 Book of Common Prayer (BCP) of the Episcopal Church and the Revised Common Lectionary (RCL), this app eliminates the need for users to manually look up passages in the Book of Common Prayer and search for readings in their own Bibles.

With the Sunday Lectionary app, users can easily find the scriptures for each Sunday of the year, thanks to its comprehensive database and supporting algorithms. This allows users to have a perpetual yearly calendar for all Sunday readings, making it a valuable tool for individuals who follow the liturgical calendar.

To access the Revised Common Lectionary (RCL), users can simply click the settings button in the bottom tab bar, select RCL in the top right corner of the Settings display, and click Save. It's important to note that the app needs to be closed and reopened after changing the Lectionary setting.

Overall, Sunday Lectionary is a user-friendly app that provides a convenient way for individuals and families to access Sunday scriptures without the need for manual searching. Whether you're a member of the Episcopal Church or simply interested in following the Revised Common Lectionary, this app offers a valuable resource for your spiritual journey.