Sparrow problems

I purchased Sparrow a month ago and I cannot deny how useful it's been. However, I recently updated the app in the App store, and lo and behold, it crashes whenever I try to load it.

I am using Sprint. I have an iPhone 4S running iOS6. Any help in resolving the issue of Sparrow crashing on me would be greatly appreciated.

Hi, so, I deleted it, performed a hard reboot through clicking the home key & power button at the top, reinstalled it, and it didn't do anything. I think it's probably something with the new version of the app that's causing these problems for me. Is there anyway I can select a diff version? I looked for support topics on the official website, but there really didn't seem to be any to address my problems. :X

Welp, there goes my love for Apple products again. Buy an app, set it up, update it, magically stop working. o/ All I wanted this phone to do was browse the internet via Dolphin, check my e-mail accounts via Sparrow, and text message through my service provider! And it hasn't been able to do that! Wagh! Must I jailbreak you, iPhone 4S? I wanted you for simplicity! ;_;

Thanks Alvaro. I'm gonna have to take this route because it's crashing on me again! It's so ****ing frustrating. Google buys them out, they stop properly supporting their application, and still Google does not release a multi-account version of GMail for iOS! I want to cry. But thank you for your help.

EDIT:

It was apparently a contacts permission issue which was solved by going into settings and allowing Sparrow access to them, but they patched it so you don't even have to do that anymore. <3