Their interview questions are pretty basic and the whole product is pretty much useless. Waste of time and money.
f.lux - f. lux is a piece of software for Windows, Mac, Linux, iOS, and Android that provides a blue light filter over your screen. Research suggests limiting our exposure to blue light in the hours before bedtime can help us fall asleep faster.
LeetCode - Practice and level up your development skills and prepare for technical interviews.
CareUEyes - CareUEyes is an eye protection software for windows that comes with blue light filter, screen dimmer, and break reminder
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Dimmer - A very small and free utility for Windows to reduce brightness on LCD/TFT screens.
Daily Coding Problem - Get exceptionally good at coding interviews