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Sigma Yandex Calendar Notifier

Chrome extension by selfcoder · Productivity · Workflow

A Chrome extension in Productivity · Workflow with 62 users, barely installed.

Specific sites only: 1 match pattern.

What the developer says, and 1 screenshot

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

Users
62
Rating
5.0 (2 ratings)
Users, last 10 days
+1
Rating, last 30 days
Not watched long enough to say
Version
1.0.2
Updated in the store
2026-05-21
Published
2025-12-30
Manifest
V3
Browser access
4 permissions, 1 site pattern

How it has moved

Users
+1 since 01.09
61-63 · 7 readings
  1. 2026-09-0161
  2. 2026-09-0362
  3. 2026-09-0461
  4. 2026-09-0663
  5. 2026-09-0762
  6. 2026-09-0962
  7. 2026-09-1062
Rating
unchanged since 01.09
reviewsrating 5.00 · 7 readings
  1. 2026-09-01reviews2rating5.00
  2. 2026-09-03reviews2rating5.00
  3. 2026-09-04reviews2rating5.00
  4. 2026-09-06reviews2rating5.00
  5. 2026-09-07reviews2rating5.00
  6. 2026-09-09reviews2rating5.00
  7. 2026-09-10reviews2rating5.00
Users
+1 since 01.09
61-63 · 7 readings
  1. 2026-09-0161
  2. 2026-09-0362
  3. 2026-09-0461
  4. 2026-09-0663
  5. 2026-09-0762
  6. 2026-09-0962
  7. 2026-09-1062
Rating
unchanged since 01.09
reviewsrating 5.00 · 7 readings
  1. 2026-09-01reviews2rating5.00
  2. 2026-09-03reviews2rating5.00
  3. 2026-09-04reviews2rating5.00
  4. 2026-09-06reviews2rating5.00
  5. 2026-09-07reviews2rating5.00
  6. 2026-09-09reviews2rating5.00
  7. 2026-09-10reviews2rating5.00

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

Specific sites only: 1 match pattern.

  • https://caldav.yandex.ru/*
  • See the address and title of every tab you have open tabs
  • Schedule work to run later alarms
  • Show you notifications notifications
Show the remaining 1
  • 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

selfcoder.

Like this one

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

  1. Checker Plus for Google Calendar™ Describes nearly the same job, with a large installed audience 300k users ★ 4.4
  2. CalendarExtension - add events while browsing Describes nearly the same job, smaller audience 5 users
  3. Itsybitsycal Describes nearly the same job 0 users
  4. Persistent Calendar Bar Describes nearly the same job, smaller audience 4 users
  5. Calendario Describes nearly the same job, smaller audience 9 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.