Extension Tracker

Lockcard - Vocabulary Builder from YouTube, Articles & AI

196 users Rated 5.00 from 10 ratings Last updated 26 Jul 2026

By Yongfeng Chai Live in the Chrome Web Store opecnacmghifdlgdpejcjmjhpjoipamp Last checked 27 Sep 2026, 07:10 UTC

The listing

What the Chrome Web Store shows, as of the last check

Learn vocabulary from YouTube, articles & PDFs. Save with context, track encounters, and sync to iPhone for review.Summary from the listing
Developer
Yongfeng Chai
Trader status
Not declared a trader under EU law
Category
Productivity › Education
First published
24 Jul 2023
Last updated
26 Jul 2026
Version
1.9.4
Size
5.16 MiB
Minimum Chrome
88
Languages
1 language

English (United States)

Website
lockcard.app
Support page
https://www.lockcard.app
Open in the Chrome Web Store ↗ Download the CRX from Google ↗
Users over time As shown on the Chrome Web Store

Tracking began on 27 Sep 2026. The chart appears after the second check.

Show the numbers
CheckedUsersRatingRatings
2026-09-271965.0010
Users, 7 days
–
needs a week of history
Users, 30 days
–
needs a month of history
Rank
#50,478
by users, of 264,254 extensions
In its category
#1,568
of 11,028 in Education

What changed

Every change found on a check, newest first

No changes found since tracking began on 27 Sep 2026.

What it can access

From the extension's manifest, in plain language

Every websiteIt can read and change your data on all the sites you visit.
Sites
  • file://*/*Every website
  • http://*/*Every website
  • https://*/*Every website
Sites where it runs scripts
  • http://*/*Every website
  • https://*/*Every website
Browser features
  • storageSave settings and data in your browser
  • tabsRead the addresses and titles of your tabs
  • ttsRead text aloud
  • webRequestWatch network requests on the sites it can reach

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 27 Sep 2026, 07:10 UTC; next check around 14 Oct 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “Lockcard - Vocabulary Builder from YouTube, Articles & AI” (opecnacmghifdlgdpejcjmjhpjoipamp). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/opecnacmghifdlgdpejcjmjhpjoipamp. Accessed 2026-09-27.
BibTeX
@misc{extensiontracker_opecnacmghifdlgdpejcjmjhpjoipamp,
  title   = {Lockcard - Vocabulary Builder from YouTube, Articles & AI (opecnacmghifdlgdpejcjmjhpjoipamp)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/opecnacmghifdlgdpejcjmjhpjoipamp},
  urldate = {2026-09-27}
}

The data is free to reuse under CC BY 4.0.

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