An idea based on the problem existing in the market may sound like a profitable deal but once you start looking for similar apps on the app store, you will find various similar apps already existing. You may realize that your app idea is not unique and there would have been many others who worked on the same concept. Well, don’t be disheartened! Out of the 2.9 million apps up till 2019, there is quite a possibility that you find a similar app on the app store whenever you think of an idea.