Nike+

Available on: iOS and Android

Priced at: Free

This is a special app for all sprinters and health conscious entrepreneurs. This app allows the user to understand the distance they have jogged or ran and also provide information on the calories burnt, pace etc. The most interesting part of the app is that it logs all the information that can be used as comparison at a given point of time.

WolframAlpha

Available on: iOS and Android

Priced at: $3.99

WolframAlpha is an app that can answer questions on maths, statistics, data analysis, physics, engineering, chemistry and more. The app takes the entire WolframAlpha site and crams it on to a phone.

Apex Launcher

Available on: Android

Priced at: Free

Apex Launcher is an android app which is fast and customizable for smartphone home screen. It lets a user customize his Android's grid size and allows him to have nine different pages. An user can also create scrollable dock that can have up to 7 icons per page.