A simple calculator app that supports arithmetic for numbers from base 2 to 16. Has functionality for converting numbers between different bases, and input of numbers in different bases.

http://appshopper.com/productivity/binary-calc

A440 Tuner is a simple app that gives a musician a reference Concert A (440MHz) pitch in any combination of 3 different forms: as played by a real oboe, as played by a synthesizer modeled oboe, or as a sine wave.

This app is not a meter or strobe or chromatic tuner – it simply produces the Concert A reference pitch

http://appshopper.com/music/a440-tuner

Convert volume and weight measures for butter.

http://appshopper.com/utilities/butter-pro

studiVZ comes to iPhone! Now you can manage your studiVZ friends and stuff directly on iPhone.

http://appshopper.com/social-networking/studivz

Xumii is a All-In-One IM & Social Application for the iPhone!

Stay connected with all your IM & social network buddies from one place. Xumii hooks you up with Facebook, MySpace, imeem, Flickr, your favorite IM services as well as your iPhone contacts.

http://appshopper.com/social-networking/xumii

Ever wonder what you will be paying in federal taxes for the year?

The 1040 Estimator is a calculator that will help you with that answer. Enter in all the information and click on calculate to get an idea of whether you will be paying or getting a refund from the IRS.

Remember to always consult a tax professional if you have specific questions regarding your tax situation.

http://appshopper.com/finance/1040-ez-estimator

This application provides a simple front-end to the TFL (Transport For London) Journey Planner tool. It covers Rail, DLR, Tube, Tram, Bus, Coach and River transport.

http://appshopper.com/navigation/london-journey-planner

A light stress reliever, tap the screen for virtual explosion.

http://appshopper.com/entertainment/explode

The future is now. Control a mechanical robot, buy upgrades, and become King of the Arena.

http://appshopper.com/games/drastic-plastic

FedEx Mobile for iPhone provides up-to-date shipment tracking information. Simply input your FedEx tracking number and you can quickly retrieve the status of your shipment. You can also personalize your view by nicknaming shipments, adding notes or creating a watch list for monitoring important shipments.

Features:

– Create a shipping label while you are on-site helping a client.
– Access your fedex.com Address Book.
– Get a rate quote easily and quickly.
– Sign up for shipment notifications.
– Find the nearest FedEx Office Print & Ship Centers,SM FedEx World Service Center(R) locations, FedEx OfficeSM Ship Centers, FedEx Authorized ShipCenter(R) locations or FedEx Express(R) Drop Boxes.
– Provide feedback to FedEx.

http://appshopper.com/business/fedex-mobile-for-iphone