Great Rock Church offers its official app for iPhone users. The app serves as a gateway to connect with the church community and stay updated on sermons and events. Pastor Mat's expository teaching method, following the Bible meticulously, is a focal point of the app. It caters to individuals seeking to engage in worship and study through praise music and scripture readings.

Users can access sermon archives, participate in personal scripture study, and remain informed about church activities through the Great Rock Church app. Developed on the Subsplash App Platform, the app caters to those interested in the teachings of the Calvary Chapel movement and provides a digital avenue to engage with the church's offerings.