For the sake of comparison: here are some details from the Pro-C feature list:
http://www.hunterindustries.com/irrigation-product/controllers/pro-cr
Independent irrigation programs: 3
Start times per program: 4
So we are talking about 3 different programs on Pro-C vs. 14 on OpenSprinkler; 4 start times per program on Pro-C vs. unlimited (practically limited by the number of minutes per day) start times on OpenSprinkler.