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.
Why not be one among the opinion providers for research companies? As these surveys are an important source of information, they are paid well. You can be the part of their opinion survey and can be assured of getting some good income. Let me tell you these surveys are paid based on the complexity. I as starter limited myself to 2-3 surveys a day and increased later on. I don’t say that the field is free from scam so; you should be very careful in choosing the companies.
Data entry is a simple job that students with basic computer and fast and accurate typing skills can do from the comfort of their computer. Typically, data entry work involves typing up data fast and accurately for clients. Many students earn money working part-time doing data entry jobs. You can find genuine data entry jobs on the following websites: