That's what I felt like today.
In precalculus, like all teachers, I want them to memorize and have a quick recall of (eventually all 6 functions and all 4 quadrants but for now...) sine/cosine/tangent of all special angles in the 1st 2 quadrants. I do timed quizzes where they have to get 100% or they get a 0% ... and they can take it as many times as they want.
I think the repetition is good for them. Also, I tell them, "hey! Make flashcards! Study!" we made a foldable (2 circles with a radius cut out and them sandwiching the other and the bottom is the unit circle with stuff around it).
Anyway, a student was waiting for a friend to do test corrections after school today, and she said, "hey ...", while she was fiddling with her iPhone. "Look what app I bought." She showed me the "unit circle app" that she bought for $0.99. You do something and a random graphical image of a reference triangle shows up on the unit circle and the sine and cosine values are shown.
Dinosaurs, I'm telling you. Rawr.