Must be a slow news day for BGR. Not only is this article pointless, but the writer was also too lazy to do any basic research. It is true that the Nigerian App store slants towards religious apps (and sex apps).It is also true that there is very little activity on that store. I had an app in the top 100 overall for many weeks on sales of fewer than 30 total copies
Your sarcasm is uncalled-for. Nigeria is not the United States. If normal people are making the equivalent of about $100/mo, and most apps are around $1-$2, then a $10 app should probably be killing snakes for them.
What's probably going on here is that people aren't aware of how to get the Bible on their phone for free, and are still paying a lot less than it takes to get a hard copy.