HI, since there is not much info about the app, I will only say why I think I'm qualified. As I have it in my profile description, I'm a UCLA Computer Science and Engineering senior. I have over 5 years of programming experience, and as you could guess, I have worked under pressure and I'm quite used to it.
I wrote 20 days, but depending on the project this number could change. Although, I would not want it to go any higher than that.
I hope I'll hear from you.