I recently came across ContestBell, a simple tool made specifically for competitive programmers.

It tracks upcoming contests from platforms like Codeforces, LeetCode, CodeChef and AtCoder and sends you notifications so you don't have to keep checking every platform.

It also recently added Google Calendar integration — connect your calendar once and your upcoming contests can be added automatically, with the correct time, duration and contest link.

If you regularly miss contests because you forget about them or get confused with timings, give it a try:

-> https://contestbell.xyz

It's free, and honestly, it's a pretty neat little tool for anyone who participates in contests regularly.

Happy coding!

You know that feeling when you open Codeforces on a Sunday evening and see "Round #987 ended 2 hours ago"? Yeah. That was me. Every. Single. Week.

I'd forget about contests. Miss Div. 2 rounds I was prepared for. Open LeetCode and see the weekly contest ended while I was sleeping. Check CodeChef only to realize Starters was yesterday.

So I built**ContestBell** — a free tool that watches Codeforces, LeetCode, CodeChef, AtCoder and HackerRank 24/7 and emails you before every contest.

Not one reminder. Three: - The moment a new contest is announced - 1 day before it starts - 1 hour before — so you actually warm up

You pick which platforms and divisions you care about. Only Div. 1 and Div. 2? Done. LeetCode weekly only? Done. All of them? Also done.

No app to install. No bot to add. Just your email.

→ https://contestbell.netlify.app

Takes 2 minutes to set up. Free forever.

I built this as a solo project and I'm actively improving it based on real user feedback. If something doesn't work for you, or you want a feature added — drop a comment below or reply on the site. I read everything and I'm genuinely trying to make this useful for the CP community.

Stop missing contests you were ready for.