A few weeks ago, I downloaded the Fuel Rewards Network app from Shell, which allows you to earn rewards that apply to certain Shell gas stations. You can automatically get $0.03 off per gallon, and your rewards can make your fuel purchase $1, $2, or more off per gallon on a single fillup. Unfortunately, the app was terrible and not optimized for smartphones. It hasn't been updated in two years even though the program is still very active. What's the worst smartphone app you've ever used?
That's a funny question. There are too many that it's scary! I would say the cat's laser light game. It was just a red dot moving around the screen for your cat to try to catch. I can't believe I downloaded it, but at least it was free.