So I'm not too sure about the Blackberry....but iphone has 2 C25k apps.... I purchased the app that had a brown background and a white "5K" on the icon.
This is what the app actually does: it give you stretches to do pre and post exercise. There are 9 weeks of 3 exercises per week, (does that make sense?) and this is the example of week 1 session 1:
you selecet start! yay!! the voice on the program says: "begin warm up, start walking." 5 minutes later the program says: "Begin running." you run for 1 minute then the voice tells you: "Begin walking." the you walk for 1.5 minutes. This 1 minute/1.5 minute rotation goes 8 times, then you hear the best workds in the whole world: "1 minute left!!" which is awesome! then there's a 5 minute cool down, and you have the option to redo the stetches.
I LOVE IT! I am a horrible runner and I did way better then I expected. I completed 6 full segments of running, and the 2 I didn't complete, i did attempt, but couldn't finish, and they were in the middle, I finished real strong at the end. also, you can use your ipod at the same time, and if you make yourself an awesome workout mix, it flys by.
Also, on the website www.c25k.com I there is a way you can access the program and print out the whole plan. I just found it easier to be told what to do during the workout so I didn't have to pay attention to a stop watch. also, as with any exercise program, you will only get out of it what you put in.
I can tell you this, my husband tried it, and he loved it! I hope in 9 weeks I can actually run a whole 30 minutes without stoping!