iCalvinus is the official system of the Presbyterian Church of Brazil, consisting of four modules: iCalvinus, iCalvinus Synod, iCalvinus Presbytery, and iCalvinus Church. Its primary goal is to automate and streamline the meetings of the Executive Commission and Supreme Council of the IPB. Since 2010, meetings have been stored and made available for document consultation, resolutions, and minutes.

The iCalvinus application also offers valuable tools such as the Presbyterian Digest where various IPB resolutions can be searched, the IPB Yearbook providing registration data of Churches, Pastors, Councils, and Bodies, Bible, Hymnal, and new features aimed at further speeding up CE and SC meetings through direct communication with members and ease in attendance and voting processes during meetings.