Hey wizzard, rightly said. Not all apps can be finished in such limited time. That's why, I'm not accepting ideas that might take long, even if they are damn interesting. I am very carefully choosing the ideas, that are good but feasible to finish in a month. I am talking to people in detail to understand their requirements before committing anything.

Secondly, though I m taking full responsibility of delivering these (and I'm great with my commitments), I've many friends who are into app development, and some of my would be colleagues at summer academy - they have shown interest in this and are going to help me finish these apps.