Dayo, sadly, because of the market size, app related business remain only profitable in a few western countries. I don’t know of any that could be used in Nigeria. That said, you can always put your own twist on things and make something that people in your local area could find useful. Essentially, you create a niche market out of it, and that can be very profitable.
Get started by asking around to see if your friends and other young people that you know would be interested in coming to a concert to see their friends play. Ask people how many bands they’d like to see, what kind of venue they’d like to see them at and how much they’d be willing to pay for a ticket. Once you’ve got a rough idea of what people want, start going about providing it.
E-books represent about 20 percent of all book sales in the U.S. The good news is you don’t have to be a publisher with deep pockets to get in on the action. As a solo internet entrepreneur, you can sell ebooks directly from your own website. You can sell your own works or sell a public domain work. Simply upload it to your website (or seller account on Amazon) and start publicizing it on your social media platforms, on your email list, your blog, website, etc.