Marco Armet, of tumblr and Instapaper fame, has released his take on a podcasting app. It's a solid first release with a simple interface and a few differentiating features that I'm loving so far.
Smart Speed analyses 'dead air' and dynamically adjusts the playback speed as needed. It simply works and works extremely well without distorting voices like standard 2x style speed up.
I've always had double the volume of my car stereo when listening to podcasts just to clearly hear the voices. Id then switch back to streaming music and almost always blow my ears out. With Overcast's Voice Boost feature, voices are loud enough and crystal clear. It even equalizes each voice on a single podcast for consistent volume. It's one feature I didn't even realize I needed until unused it.
If you listen to podcasts on your iOS devices, Overcast is a much have.