What is the goal ? If you planning to monetize it then pick up an existing successful app. Strip down the functionality and cater to a niche set of users. Devel

What is the goal ? If you planning to monetize it then pick up an existing successful app. Strip down the functionality and cater to a niche set of users. Develop something very fast. Get on twitter and broadcast it, dm potential users. First ideas usually suck. It is the second, third, fourth ideas that will get traction. Thinking of unique idea is usually a kind of procrastination. There are lot of apps that just suck. Copy the idea and make it better, faster, cheaper, intuitive. DM potential users.