Convertbot ★★★★★ ($1.99/ App Store) for the iPhone is without question the best unit converter app available for the iOS. From the makers of the 5 star apps; Calcbot and Tweetbot - Convertbot is also on a standard all app developers should follow. Ingenious user interface anyone can use with visual, audible and control bliss. Converts currency, time, length and 17 other categories with over 500 different units of which can be mixed for conversion. If your in need of any sort of unit converter app, Convertbot is the best choice. Period.

Mobile Mouse ★★★★☆ ($1.99 / App Store) for the iPhone is a tool that let lets you use your iPhone or iPod touch as a wireless mouse for any PC or Mac computer. All this app needs to work is a server program on the computer (free) and a Wi-Fi connection - and its all very easy to install and use. Mobile Mouse gives you all the features of what a regular mouse can do but with much more. You can even type with it so it doubles as a keyboard.   

Calcbot ★★★★★ ($1.99/ App Store) for the iPhone and iPad is a robot calculator. Okay, so its just a calculator - but the finest one in the App Store, far exceeding the built in iOS one. From the makers of [Tweetbot] and [Convertbot], Calcbot is extremely well polished, the user interface top notch with sound effects to match. Other than that, Calcbot features a live type-as-you-calculate expression view with history. Swiping to the left slides the advanced calculations area. No doubt the best calculator app for the iOS. 

iCam ★★★★☆ ($4.99 / App Store) for the iPhone is an easy to use webcam streaming app. The applications are numerous for iCam such as; security camera, nanny cam, baby cam, pet cam, spy cam or anything else you can think of. As long as a PC or Mac has a web cam (upto 4 at a time) and is connected to the internet, your iPhone can view those cams in real time. There is even sound as well as push notifications of any movement from those cams. 

Ultra LED Flashlight ★★★★★ ($.99 / App Store) for the iPhone is a very stylish and effective flashlight. Using the power of the iPhone 4+’s LED light, Ultra utilizes this feature with a simple but greatly designed app. There are two buttons, one for the LED light and one for the screen to maximize brightness - but all in a very cool and futuristic way. Even the app icon is an awesome design.  

Living Earth HD ★★★★☆ ($.99 / App Store) for the iPhone and iPad is an amazing World clock, weather and alarm. The app focuses on a beautifully and ultra realistic rendering of the Earth that spins as it should with the daylight and darkness changing along with cloud patterns for weather in near real time. Jumping from city to city, the Earth will spin to the location like your flying. The only draw back is that the user interface is quite unattractive, especially compared to the “living Earth” doing its thing on the screen.