iDisplay AppIs your computer's desktop getting overcrowded? iDisplay turns your iDevice into a secondary screen, letting you temporarily declutter your work environment.
IFTTT AppAutomating tasks on your phone can be a pain - but the IFTTT app makes it a lot easier. It stands for "If this, then that".
The Mailbox AppKeeping up with email on your phone is, at best, a tricky affair – especially if you have multiple accounts. The Mailbox app makes it notably easier.
ProjectbookProjectbook lets you blend your notes, photos, audio recordings and more onto a single page, letting you stay on top of things.
Visual Travel ChecklistThe Visual Travel Checklist lets you put together a list of items to remind you what to take (or purchase) for a trip.
The Clear AppThe Clear app simplifies list-keeping for iPhone users, using a heat map to show the priority of items and a simple swipe functionality to check them off.
Instapaper Pro AppThe Instapaper app lets you save web pages and browse them offline. Even better, it strips the ads, graphics and other extras from the page, which helps you concentrate more.
Document Scanner AppScan documents and receipts with your phone and turn them into pdf files.
The Astrid AppSmart phones are all about staying organized and the Astrid app is just one more way to do that.