Timer by App Cubby launched as an inexpensive way to quickly and easily set single or multiple count-down timers on the iPhone. Since Apple's built-in Clock app only allows for a single timer at once, Timer was well worth the $0.99 it originally cost. Recently, however, App Cubby made it free. And now they're further upping the ante with Timer 2.0. It's still free, but the new version comes with the option to add even more features via in-app purchase.
I had a chance to talk to David Barnard, App Cubby's producer, about all the work and the thought process that went into making Timer 2.0, and into how to best sell it on the App Store. If you're interested in development and the App Store economy, it's a must-listen: