Workout Hero
All-in-one WOD & Lift Log, Fitness Tracker & Paleo Diet, with Timers Pro Tabata Timer
Its the most comprehensive
TIMERS PRO
Tabata, Functional Fitness WOD, Hiit, and Interval, EMOM, Fight Gone Bad & MMA Timer
Used by crossfit.com in the CrossFit open (2012 and 2013)
Random WOD
Workout Randomizer, Cardio, Tabata, Olympic Lift Fitness Trainer and Food Reminder Alarms with Timers Pro
Its the best WOD randomizer and it has TIMERS PRO in it!
iWod Pro
Paleo Diet, WOD Journal, and Functional Fitness tracker App with Timers Pro
Very educational app.