How do I choose the right niche market for my online business?
Just find out a niche which is less competitive and have much people searching for it.
Use Market Samurai to get a niche as just like 'batman' said which is less competitive but have much demand. And don't forget to see the trend if it is not trending in the near future then it will be total waste of money and time both.
Android apps market at resend more powerful and getting more earning from it.