I was wondering if there any folks out there that use a mobile device (iphone, Android) as a cycling computer for the outdoor rides. Currently I am using an iPhone 5s with the Wahoo Fitness and it works great. I secure it to the bike with a quad-lock and have had no issues. The appealing thing about using the phone is the large display as I find smaller bike computers hard to read due to my increasing farsightedness. Lately I have been wishing I could take a structured workout file (ERG or MRC) and upload it to the device and have it lead me through it, but I have yet to find an app that will do that. I have not tried using TrainerRoad offline yet - that might be an option as well.
Would appreciate any input!