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Lion Gatekeeper

Chrome extension by ExploreMoreWorlds · Productivity · Tools

A Chrome extension in Productivity · Tools with 813 users, barely installed. Audience over the last 30 days: +175.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 2 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
813
Rating
4.9 (10 ratings)
Users, last 30 days
+175
Rating, last 30 days
-0.10 in 30 days
Version
1.0.0
Updated in the store
2026-06-30
Published
2026-06-30
Manifest
V3
Browser access
5 permissions, 1 site pattern

How it has moved

Users
+175 since 02.10
638-843 · 19 readings
  1. 2026-10-04754
  2. 2026-10-08794
  3. 2026-10-09786
  4. 2026-10-10794
  5. 2026-10-13792
  6. 2026-10-16809
  7. 2026-10-17824
  8. 2026-10-18840
  9. 2026-10-19842
  10. 2026-10-20843
  11. 2026-10-21836
  12. 2026-10-23823
  13. 2026-10-24826
  14. 2026-10-25822
  15. 2026-10-26808
  16. 2026-10-28823
  17. 2026-10-29821
  18. 2026-10-30826
  19. 2026-11-01813
Rating
-0.10 since 02.10
reviewsrating 4.90-5.00 · 19 readings
  1. 2026-10-04reviews9rating5.00
  2. 2026-10-08reviews9rating5.00
  3. 2026-10-09reviews10rating4.90
  4. 2026-10-10reviews10rating4.90
  5. 2026-10-13reviews10rating4.90
  6. 2026-10-16reviews10rating4.90
  7. 2026-10-17reviews10rating4.90
  8. 2026-10-18reviews10rating4.90
  9. 2026-10-19reviews10rating4.90
  10. 2026-10-20reviews10rating4.90
  11. 2026-10-21reviews10rating4.90
  12. 2026-10-23reviews10rating4.90
  13. 2026-10-24reviews10rating4.90
  14. 2026-10-25reviews10rating4.90
  15. 2026-10-26reviews10rating4.90
  16. 2026-10-28reviews10rating4.90
  17. 2026-10-29reviews10rating4.90
  18. 2026-10-30reviews10rating4.90
  19. 2026-11-01reviews10rating4.90
Users
+299 since 01.09
514-843 · 33 readings
  1. 2026-09-01514
  2. 2026-09-02531
  3. 2026-09-04573
  4. 2026-09-06573
  5. 2026-09-08575
  6. 2026-09-09582
  7. 2026-09-13620
  8. 2026-09-15629
  9. 2026-09-16626
  10. 2026-09-20622
  11. 2026-09-21619
  12. 2026-09-25622
  13. 2026-09-26628
  14. 2026-09-28638
  15. 2026-10-04754
  16. 2026-10-08794
  17. 2026-10-09786
  18. 2026-10-10794
  19. 2026-10-13792
  20. 2026-10-16809
  21. 2026-10-17824
  22. 2026-10-18840
  23. 2026-10-19842
  24. 2026-10-20843
  25. 2026-10-21836
  26. 2026-10-23823
  27. 2026-10-24826
  28. 2026-10-25822
  29. 2026-10-26808
  30. 2026-10-28823
  31. 2026-10-29821
  32. 2026-10-30826
  33. 2026-11-01813
Rating
-0.10 since 01.09
reviewsrating 4.90-5.00 · 33 readings
  1. 2026-09-01reviews9rating5.00
  2. 2026-09-02reviews9rating5.00
  3. 2026-09-04reviews9rating5.00
  4. 2026-09-06reviews9rating5.00
  5. 2026-09-08reviews9rating5.00
  6. 2026-09-09reviews9rating5.00
  7. 2026-09-13reviews9rating5.00
  8. 2026-09-15reviews9rating5.00
  9. 2026-09-16reviews9rating5.00
  10. 2026-09-20reviews9rating5.00
  11. 2026-09-21reviews9rating5.00
  12. 2026-09-25reviews9rating5.00
  13. 2026-09-26reviews9rating5.00
  14. 2026-09-28reviews9rating5.00
  15. 2026-10-04reviews9rating5.00
  16. 2026-10-08reviews9rating5.00
  17. 2026-10-09reviews10rating4.90
  18. 2026-10-10reviews10rating4.90
  19. 2026-10-13reviews10rating4.90
  20. 2026-10-16reviews10rating4.90
  21. 2026-10-17reviews10rating4.90
  22. 2026-10-18reviews10rating4.90
  23. 2026-10-19reviews10rating4.90
  24. 2026-10-20reviews10rating4.90
  25. 2026-10-21reviews10rating4.90
  26. 2026-10-23reviews10rating4.90
  27. 2026-10-24reviews10rating4.90
  28. 2026-10-25reviews10rating4.90
  29. 2026-10-26reviews10rating4.90
  30. 2026-10-28reviews10rating4.90
  31. 2026-10-29reviews10rating4.90
  32. 2026-10-30reviews10rating4.90
  33. 2026-11-01reviews10rating4.90

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

  • See the address and title of every tab you have open tabs
  • Run its own code on the pages it can access scripting
  • Schedule work to run later alarms
Show the remaining 2
  • Tell whether you are away from the computer idle
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

ExploreMoreWorlds publishes 2 listings we track, 2k users between them.

  1. Kindle Cloud Reader to PDF – Export Kindle Books ExploreMoreWorlds · Productivity · Education · published 2026-05-28 987 users ★ 4.7

Like this one

Listings the catalog judges closest in what they say they do.

  1. Cat GateKeeper - Screen Time & Doomscroll Blocker Describes nearly the same job, smaller audience 17 users
  2. PawsOff Describes nearly the same job, smaller audience 8 users ★ 5.0
  3. TabLimit: Website Time Limiter & Digital Focus Describes nearly the same job, smaller audience 3 users (last published figure)
  4. My Pet Gatekeeper Describes nearly the same job, smaller audience 199 users
  5. Grivun — Website Blocker & Feed Hider Describes nearly the same job, smaller audience 8 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Users and rating on Ext Ops Panel

Markdown

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built