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LockIn — Strict Schedule Site Blocker

Chrome extension by syuumai6842 · Productivity · Tools

  • Trader

A Chrome extension in Productivity · Tools with 3 users, barely installed.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 6 screenshots

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

Users
3 (the store no longer states an audience; this is the last figure it published)
Rating
not rated yet
Users, last 14 days
+3
Version
1.0.0
Updated in the store
2026-08-23
Published
2026-07-20
Manifest
V3
Browser access
3 permissions

How it has moved

Users
+3 since 01.09
0-3 · 5 readings
  1. 2026-09-010
  2. 2026-09-023
  3. 2026-09-063
  4. 2026-09-070
  5. 2026-09-143
Users
+3 since 01.09
0-3 · 5 readings
  1. 2026-09-010
  2. 2026-09-023
  3. 2026-09-063
  4. 2026-09-070
  5. 2026-09-143

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

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Block or redirect requests by rules it declares in advance declarativeNetRequest
  • Schedule work to run later alarms
  • 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

syuumai6842 publishes 12 listings we track, 36 users between them.

  1. TypeScope — Live Font Tester & Pairing Tool syuumai6842 · Productivity · Communication · published 2026-07-19 4 users (last published figure)
  2. ScrollGuard — Multi-Platform Doomscroll Blocker syuumai6842 · Productivity · Communication · published 2026-07-20 3 users (last published figure)
  3. Swatch — No-Signup Palette Organizer syuumai6842 · Productivity · Communication · published 2026-07-20 3 users (last published figure)
Show 5 more from this publisher
  1. MultiCookie — Cookie & Storage Profile Manager syuumai6842 · Productivity · Developer · published 2026-07-16 3 users (last published figure)
  2. PromptHub — Multi-AI Chat Organizer syuumai6842 · Productivity · Communication · published 2026-07-16 3 users (last published figure)
  3. NovelMark — Multi-Site Reading Tracker syuumai6842 · Productivity · Tools · published 2026-07-21 3 users
  4. CrossList Pro — Multi-Platform Resale Lister syuumai6842 · Productivity · Tools · published 2026-07-16 3 users (last published figure)
  5. PageHush — Persistent Element Hider syuumai6842 · Productivity · Communication · published 2026-07-20 3 users (last published figure)

Like this one

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

  1. ScheduleBlock Describes nearly the same job, smaller audience 418 users ★ 4.4
  2. URL Blocker by Time Describes nearly the same job, smaller audience 3 users (last published figure)
  3. BanMax Describes nearly the same job, smaller audience 3 users (last published figure) ★ 5.0
  4. Chron Describes nearly the same job, smaller audience 4 users
  5. FocusWarden - Website Blocker 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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.