First a shout out to our friends up north on the 30th anniversary of the New York Theory Day this Friday.
Just two years ago I wrote a post Gadget Love but now I don't use many gadgets any more, it's all built into my iPhone and iPad. No wonder a company like Best Buy is having problems. Not only do they have to compete against Amazon they also compete against the Apple App Store.
Some of my favorite apps:
Goodreader - Manage, view and mark-up PDF files. Syncs with Dropbox and nearly every other file sharing service.
Evernote - Manages short notes and photos. I often just take pictures of a whiteboard and save it to Evernote.
JotNot - The iPhone becomes a scanner.
Those three apps let me lead a nearly paperless life.
WolframAlpha - Whatever you think of Stephen Wolfram, this is still a very useful tool.
TripIt - Forward your emails from airlines, rental cars and hotels to trip it and it organizes all your info. Invaluable when traveling.
ComplexityZoo - OK, I rarely use, it but it's pretty cool there's a free app that let's you find complexity classes.
There are many many great and not-so-great apps. I have seven pages of apps on my iPhone. But I can always download more so tell me some of your favorites.