Apparently, Fitness Journal DOES INDEED have a planner function where I can set out my week's plan! I stood to be corrected (and I was). Well, it's even better than I thought.
There's a food journal function on there as well, but I'm not so good at keeping track of that even though I'd like to be. I just don't have the desire to log every single thing. Maybe I should try it for a few days.
The other thing I like about it is that it differentiates between, say, stationary bike, actual spin class and road cycling; running and running on a track; swimming in open water v. pool - very cool. You can be as detailed or as vague as you want in recording your workouts, and there's a place to record how you felt, and make other notes. For example, on my track workouts I use the notes section to write what the actual track workout was.
Finally, the neat thing is that it tallies everything for you so you can look at a week's totals thus far, a month's totals, etc. It also tells you when you log in how many days you have until each event. That's good and scary. :-)
Go Fitness Journal!