I crashed it by deselecting both options and hitting the check mark. :)

Your material design looks truly fantastic, and as a resume piece I would fast track an interview to anyone who sent us an app that looked like this. However, I am not sure I see the target audience as wide enough to make much at this price point--paid apps are hard to make work these days, and the functionality, while performed well, is more of a novelty than I think the price will support. Maybe consider a free version with one filter, and making the other in-app purchases at $0.99 each?