The Bruce Trail Conservancy (who's celebrating their 50th Anniversary) have released their own Bruce Trail App for iOS (Android version aimed at late 2015/Early 2016).

"Plan, track, and log your hikes on Canada's oldest and longest marked footpath with this easy-to-use, official Bruce Trail App. Carry the most up-to-date Bruce Trail information with you on your day-hikes or long-distance adventures on the Niagara Escarpment."
  • Explore the full Bruce Trail, including all the latest trail changes, displayed either on the BTC's signature topographic maps or Apple's satellite map view
  • Plan your route. Calculate Distances.
  • Choose your map options such as Topo, roads, main trail, side trails, parking locations and camping
  • Search for places
  • Track your location
  • Create saved tracks of your hikes

The Bruce Trail App is $9.99 and is designed to work with both the iPhone and iPad.