First on is push-up counter. It uses ultrasonic sensor to detect how close the doer is. Then it counts the amount of push-ups to the digital screen. It can be restarted with button. Simple, but works. No idea if someone needs this or not ?
Last one was a flashlight button tester. It can be set to push forever the flashlight button, it tests if the light turns on and if not it calculates it as error. It didn't save any log file yet but it was under work. Very useful tool for flashlight producers i'd say.