Google Now

Price: Free

Google Now is the app from Google and it is available on iOS and Android. To launch the app, user has to say ‘OK Google’ and tell what he wants to search or do; the app helps the user with it. Using the built-in GPS function on the phone, it determines where the user is at, at all times. Then it provides services which may prove useful to the user.

Cortana

Price: Free

Cortana is your personal assistant on your Windows Phone. She's there to help make things easier for you and keep you up to date on the things that matter to you. Microsoft has made an effort to build a compatible app for Android users, but only the beta version is available at present. In the near future, Microsoft will launch the final build of Cortana on Android platform.

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