Bangalore: A few years ago, Apple and Google were great business buddies playing like an unbeatable team. They were making breakthroughs in their respective markets. Google CEO, Eric Schmidt even had his own seat on Apple's board. When the iPhone came out in 2007, Google Maps, Search and YouTube were included as native apps.

But off late, after Google stepped into the mobile market, its relationship with Apple grew sour and eventually turned into a full-fledged rivalry. Here are 10 reasons why Google and Apple are finally doing what can be said a breakup.

10. The Launch of Android

In the early to mid-2000s, Google was known almost exclusively as a search engine giant, having acquired the market share from Yahoo! and AOL.

But, in November 2007, Google decided to try its luck in the software space and launched Android, its own mobile OS for smartphones.

Today, Android accounts for 59 percent of the Smartphone market, IDC reported in May. On the other hand Apple’s iOS has a market share of 24 percent.

9. The App Store Alternative

Along with introduction of the T-Mobile G1, the first-ever Android phone, Google launched in October 2008 the Android Market, an online storefront through which users could purchase and download applications for use on Android devices. The developers who built apps for the market were given 70% share of the sales. Even users were happy to get all the apps they need at one place.

This was clearly a cut rival to Apple’s App Store, which was launched 4 months earlier in June 2008 alongside iPhone 3G.