Their interview questions are pretty basic and the whole product is pretty much useless. Waste of time and money.
Bizness Apps - Create your own app or become a reseller and build apps for others
LeetCode - Practice and level up your development skills and prepare for technical interviews.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Dropsource - Mobile development platform for building native iOS & Android apps
Daily Coding Problem - Get exceptionally good at coding interviews