AlgoDrill
Interactive drills to stop forgetting LeetCode patterns
Details
- External ID
- 46203581
- Source
- HN
- Company
- —
- Product
- AlgoDrill
- Website domain
- algodrill.io
- Launched
- Dec. 9, 2025
- Cohort
- —
- Upvotes
- 178
- Upvotes percentile
- 0.9389312977099237
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
I built AlgoDrill because I kept grinding LeetCode, thinking I knew the pattern, and then completely blanking when I had to implement it from scratch a few weeks later.AlgoDrill turns NeetCode 150 and more into pattern-based drills: you rebuild the solution line by line with active recall, get first principles editorials that explain why each step exists, and everything is tagged by patterns like sliding window, two pointers, and DP so you can hammer the ones you keep forgetting. The goal is simple: turn familiar patterns into code you can write quickly and confidently in a real interview.https://algodrill.ioWould love feedback on whether this drill-style approach feels like a real upgrade over just solving problems once, and what’s most confusing or missing when you first land on the site.
Enrichment
- Theme
- indie puzzle and logic games
- Vertical
- Education
- Function
- Vertical SaaS
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- coding interview practice with spaced repetition
- Manually corrected
- False
Could you build this?
Yes AlgoDrill is an educational coding web app with pre-authored LeetCode templates, an in-browser code editor, and active-recall fill-in-the-blank drills.
Discussion
20 comments analyzed.
Competitors mentioned: LeetCode, NeetCode
Concerns raised: Checker too strict about variable names and code structure matching, Requires Google account for sign-in, Yet another paid subscription tool, Scarcity messaging ('17 spots left') feels like dishonest sales tactic, Limited language support (missing Go, Ruby, JavaScript)
Feature requests: Support for Go and Ruby languages, Alternative sign-in method besides Google, Two practice modes: drill exact solution vs. adapt to user's own code approach, AST-based code validation instead of strict text matching
Competitors
Other products that read as similar to this one — 15 launches clear the similarity bar, closest 8 shown.
Attention rank: #2 of 16 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Looks like the first mover among its competitors.
- Algotrek · hn · 2026-07-16 · 13 upvotes · similarity 0.43
- SQLens · ph · 2026-09-09 · 1 upvotes · similarity 0.42
- GrindLens · ph · 2026-09-17 · 2 upvotes · similarity 0.38
- Persistent Memory for Claude Code (MCP) · hn · 2026-01-10 · 7 upvotes · similarity 0.34
- SharpSkill · hn · 2026-05-19 · 5 upvotes · similarity 0.34
- Drilld - Pickleball Trainer App · ph · 2026-09-15 · 2 upvotes · similarity 0.34
- SkillPath · ph · 2026-09-25 · 1 upvotes · similarity 0.34
- Total Recall · hn · 2026-02-05 · 67 upvotes · similarity 0.32
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a vertical saas tool for Insurance yet.