LAUNCH·INDEX

Penmentor

Claude marks up your handwritten math like a teacher

EDUCEducation & Learning·HNShow HN
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Breakout launch

Beat 97% of Show HN launches that day

#5 of 186 on Oct 20

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62+62IPO

points · since listing → Oct 21, 15:22 UTC

Still tracked: re-read by each daily run while under ~168h old (window closes ~Oct 27, 15:10 UTC).

comments · buzz +7 in latest interval

27h

listed Oct 20, 15:10 UTC

Traction (points) over time

050100Oct 21ListedOct 21, 15:22 UTC · 62 points · 7 comments · 24h after listing
1 reading (one per daily ingest run). Dots are recorded values; lines just connect them — nothing in between is measured.

Key statistics

Traction
62points
Comments
Rank in EDUC this week
#1of 19 HN
Rank overall this week
#22of 944 HN
Sector hit rate
5.3%1/19 · 7D
Traction line
Hit10+ points
First reading
62Oct 21, 15:22 UTC
Last reading
62Oct 21, 15:22 UTC
Readings
1over 24h

Launch-day race · #5 of 186 Show HN launches on 2026-10-20

  1. #3Death Plan Switch, a self-hosted dead man's switch for solo devs101 points
  2. #4Jev Cards, Can you beat a vision model at a picture quiz?66 points
  3. #5Penmentor62 points
  4. #6Respan (YC W24)51 points
  5. #7Clerkenwell26 points
All launches on 2026-10-20 →

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Penmentor on Launch Index
<a href="https://launchindex.ai/product/37310" target="_blank"><img src="https://launchindex.ai/badge/37310" alt="Penmentor on Launch Index" height="54" /></a>

Discussion HNHacker News·7 comments

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Others in this sector · top Show HN launches in Education & Learning by traction, last 7 days

All Education & Learning stocks →

Data as of Oct 21, 2026, 2:17 PM UTC. Sector comes from keyword rules on the title and tagline and can be wrong. How it works