You solve a problem. Feel good. Move on.
3 weeks later same problem, total blank.

Sound familiar?

That's not a you problem. That's how memory works. Without spaced review, you forget ~70% of what you learn within 2 weeks. No amount of grinding fixes that.

So I built AlgoRetention a free spaced repetition tracker made specifically for DSA.

Here's how it works:
→ Add any problem you've solved
→ Rate how well you remembered it (Easy / Medium /Hard / Forgot)
→ The system schedules exactly when to review it next

If you blanked → review tomorrow.
If you nailed it → see it again in 2 weeks.

It's the same science behind Anki and Duolingo, applied to LeetCode.

No subscriptions. No setup. Completely FREE. Takes 2 minutes to start.

👉 https://algo-retention.vercel.app/

If you're mid-grind or placements are coming start today. The problems you add this week will be locked in by the time it matters.

Drop a comment if you try it. I read every one.