You can put the google voice app on your Droid/iphone and you can text, receive/make phone calls. 

Is there a cool app that I could access from my IPhone and/or home PC?

If I wasn't typing on my iPhone I'd hyperlink to another forum post or blog that lists them.

Originally posted by @Mike Hurney:@Lu CarterI always ask to see the DL and take a picture with my iPhone....This is a MUST DO for every applicant - no exceptions unless they do not have a driver license in which case they must have some official government issued photo ID that you will take picture of. 

Also, I used to run the Skype app on my iPhone 4S and it really drained my battery towards the end of the day, so that's a concern too.  

I manage everything from my iPhone and would like to automate communication, calendars etc but don’t want to keep logging into websites to do it.

I used a free iPhone app called BizXpensTrkr then export it to a spreadsheet, but just a spreadsheet works fine and saves $50-80 a month.

After reading thru comments(on my Iphone), I ended up testing the strength of my Otterbox by hurling my phone against the livingroom wall!

Having said that, I just switched to a cloud-based solution (you can access from your iphone or anyone's laptop that has internet).

Our developer has a list with well over 100 items on it (including our broken iPhone app and the upcoming wholesaling calculator!)