
The app, La Biblia, is in Spanish language and was created by McKendrick in 2012, while he was in between jobs. The app, which Trevor refers to as his 'side project', makes him between $5,000 and $10,000 a month.
Read: 150 years of services: Stamp honours Pakistan Bible Society
The Salt Lake City software entrepreneur may not believe in God, but the Holy scriptures have proved good business for him.
He created two apps for the iPhone, which nets him about $100,000 a year. The apps are Spanish translations of the Bible with one being a text version and the other an audiobook app. McKendrick attributed his success to latter.
In the first year alone, the app made $73,034 in net revenue, followed by $100,134 in the second.

PHOTO: INTERNATIONAL BUSINESS TIMES
"That was the moment, where it was, ‘Oh this is not just a side project. This is a living,’" McKendrick told host Alex Blumberg of the podcast StartUp in January.
In a blog, McKendrick said that the idea for the app came after extensive market research. He wanted to find a niche that could be profitable and was "not swamped by competition".
“It turns out that most of the Spanish Bible apps out there are really bad,” McKendrick wrote in his blog. He added that some Bible apps are good but are too generalised and isolated their Spanish-speaking audience.
Twitter users shared their views, some in favour of the idea, while others not in support of the atheist.
Atheist Making over $100,000 a Year Selling Bibles Says He Feels Bad about It but Money Is… http://t.co/G86ZZys7T6 pic.twitter.com/gE1adcpkrZ
— Lahbahdi (@Lahbahdi) March 13, 2015
https://twitter.com/Etain_1933/status/576640499458707456
Atheist Makes Over $100k Selling Bibleshttp://t.co/IE0UsTqDqq pic.twitter.com/GMHoO1zYsT
— Gum Sling (@GumSling) March 15, 2015
https://twitter.com/TheTruth24UK/status/577279515518464000
The atheist racking it in, selling the bible in Spanish as an app http://t.co/Y8fYmN4CxY << we believe in literature for God's sake.
— John Sargeant (@JPSargeant78) March 16, 2015
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