Here are some of the apps that I use on a daily or near-daily basis. I’ve found a number of them life changing, and most are free.
Laudate – The best free app on the market for all things Catholic. Includes two bible translations (Douay-Rheims, NABRE), daily readings for Mass and Saints of the day, the Liturgy of the Hours, Daily Prayers, Rosary prayers, the Stations of the Cross, a Confession app, the Catechism of the Catholic Church and much more!
Universalis – an app containing the daily Mass Readings and the Liturgy of the Hours. Very easy and enjoyable to use. It does come at a small cost, but is much cheaper than the circa $400 AUD required to purchase the book versions.
iPieta – Contains more interesting features than a swiss army knife. Includes Bible versions, the Novus Ordo and Traditional Mass Readings, Prayers, Writings from Saints and Early Church Fathers and much more.
EWTN – for all EWTN Catholic radio audio programs.
ESV Bible – the best free Protestant Bible app on the market, and probably the best Bible app. Contains the ESV Bible text, and a free downloadable study Bible. Other Study Bible purchases available in app. The ESV is my preferred Protestant translation of choice, and the material in this app make it a must.
Christian Creeds and Reformed Confessions – This app contains almost all of the well-known Protestant creeds and confessional documents. Save yourself the headache of trying to find books containing them all and get this app for free.
Triglotta – The Book of Concord – If Christian Creeds and Reformed Confessions covers almost all of the relevant Protestant Church documents, this app contains all the documents contained in the Book of Concord, which is the book containing the confessional documents of the Lutheran Church.
Grace to you – John MacArthur (often referred to as the Evangelical Pope), is a preacher in his 70s that has preached through the New Testament over 43. Use this app to listen to the audio from these sermons, as well as for other things related to John MacArthur.
Duolingo – The best language-learning app I have ever used. Helps me with learning Spanish to better interact with my girlfriend and family.
WhatsApp – A helpful app for contacting friends and loved ones whilst abroad. Requires internet data to use. First year is free, then it is 99c p.a. thereafter (if I recall correctly).
C25K Free – A running app to help you go from the couch to running 5Ks at a time. I tend to be injury-prone, but I use this when my knees and ankles aren't giving me grief.