Question

Does anyone know the time frames that some popular apps took to design? Sleep Cycle, Song Kick etc.? Ones that have both database and hardware integration

Answer 1

This is an interesting question, it would be a little difficult to ascertain the exat time of development since firms/individuals are usually secretive about when they start a project.
I came across this development firm that says with their level of expertise, the most intensive of apps are usually developed between 12-20 weeks.
They have a nice table at the botom, but I would take info like this with a pinch of salt as it is all very relative.
http://www.impigermobile.com/articles/how-much-time-does-it-take-to-develop-an-iphone-app/
Hope this helps.

Answer 2

Correction exact*

Answer 3

Got it, Cheers!