Study Hub
Every CS course this semester turned into graded drills, a C tracer, and live quiz battles.
- Role
- Co-built, team of 2
- When
- Sep 2026 to now
- Release
- 1.13.0
- Stack
- NextJS, Tailwindcss, Supabase, PostHog
The problem
Lecture decks and exercise sheets don't tell you whether you got the answer right. Study Hub turns each CS course this semester into problems the app can check, all in one place, and usable on a phone between classes.
It started as two separate tools, a single HTML page of IAS notes and a Graph Theory app, and grew into one app for every course.
Main features
- A C tracer. Paste a program and step through it line by line, with pointers drawn as arrows to what they point at. It stops on the line that reads an uninitialized variable or indexes past the end of an array, where real C would print garbage.
- Drills graded by running the code. The app takes each answer key from the tracer's recorded steps, so no answer is typed in by hand.
- A data-structure visualizer that builds lists, stacks, queues, trees, and graphs one operation at a time.
- Course material for Programming 1 and 2, DSA, IAS, Graph Theory, and Automata Theory, with flashcard decks, exam simulators, and a switch for exam conditions.
- Battle mode, where up to 30 classmates answer the same question at once and see the scores live.
- No account needed. Progress stays in the browser, and signing in syncs it across devices.
