Simple app to track current bitcoin price from different exchanges and their markets. There is an option to create own track list to have a better overview about price of BTC on exchanges, which are interesting for you. You can compare prices with simple arbitrage overview to see if there are spreads to realize arbitrage trades and make some profit (however take it more as overview, prices are cached for minute). App provides notifications and widgets to follow current prices and stats.
New user guide at http://funny-apps.cz
This first version provides only fiat currency markets, altcoin markets will follow. So now, the app contains over 120 fiat markets, I hope you will find there your favorite.