I built CodeNexus because I wanted coding interview prep to feel more practical and accessible in real life. Most platforms assume you are sitting at a desk with a laptop and enough uninterrupted time to grind problems for hours. I wanted something mobile-first, where you could practice data structures, work through interview-style problems, and stay sharp from anywhere, whether that is during a commute, while traveling, or in short pockets of free time throughout the day. Another big difference was the business model. I did not want to build another monthly subscription tool. CodeNexus gives people a free starting point, then a lifetime purchase option so they can own their prep rather than rent access to it. As I built it, the process evolved from simply making a LeetCode-style mobile app into creating something more focused on real interview behavior: structured practice, cleaner mobile UX, and AI-based interview assessment flows that feel more aligned with how candidates prepare today. This launch is for people who want serious prep without being chained to a desktop or another subscription. I would genuinely love feedback on the experience, what feels most useful, and what you would want added next.

CodeNexus

Mobile-first LeetCode style coding interview prep you own

Mobile-first LeetCode style coding interview prep you own