What is Catena app for iPhone?

It is a Bible app with the most popular Biblical commentaries. It is an easy to read commentary in the form of an app. You can read all the verses with the Bible text displayed in front of each verse.

Catena, the Bible app, can be downloaded on your smartphone or tablet for free. It's a convenient way to learn and understand the teachings of the Lord, especially if you often find yourself busy and unable to attend the Holy mass on a regular basis.