If you're trying to grow a business in Nigeria and you want investors, you want Nigeria's economy to look as big as possible.
Bayo Puddicombe and Zubair Abubakar own a company called Pledge 51, which creates applications for Nigeria's low-tech cellphones. One of their most popular games lets players pretend to drive the notoriously wild buses crisscrossing the Nigerian city Lagos. It's called Danfo, after the buses.
Now for people who enjoy using technology, it might feel like there's an app for everything. Some are mindless. I mean I'm a little embarrassed to tell you how much time I spend baking fake pizza on my mobile device. Then there are apps that are meant to actually be productive. And let's hear about one of those now.