Realtor.ca has a great app for Homebuyers. It allows you to search and filter MLS listings. You can use your location and find out about open houses in your area as well!
And I also included an app for homeowners at the bottom.
For Apple Products: https://itunes.apple.com/ca/app/realtor-ca/id408873309
For BlackBerry Products: https://appworld.blackberry.com/webstore/content/39031/?lang=en
For Android Products: https://play.google.com/store/apps/details?id=ca.crea.realtor&feature=search_result&hl=en
Here is another great app http://www.clientlinkt.com/install/186
It allows you to browse local service providers, restaurants, etc.... Make sure to choose me, Kim Louie, as your favourite agent for my personal recommendations!