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TimerO - Timer, Picker & Planner

Chrome extension by SPKSoftware66 · Productivity · Education

A Chrome extension in Productivity · Education with 52 users, barely installed.

Specific sites only: 2 match patterns.

What the developer says, and 3 screenshots

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

Users
52
Rating
5.0 (2 ratings)
Users, last 17 days
+5
Rating, last 30 days
Not watched long enough to say
Version
2.10.0
Updated in the store
2026-07-24
Published
2025-12-03
Manifest
V3
Browser access
6 permissions, 2 site patterns

How it has moved

Users
+5 since 01.09
46-52 · 9 readings
  1. 2026-09-0147
  2. 2026-09-0246
  3. 2026-09-0349
  4. 2026-09-0447
  5. 2026-09-0850
  6. 2026-09-1051
  7. 2026-09-1352
  8. 2026-09-1549
  9. 2026-09-1752
Rating
unchanged since 01.09
reviewsrating 5.00 · 9 readings
  1. 2026-09-01reviews2rating5.00
  2. 2026-09-02reviews2rating5.00
  3. 2026-09-03reviews2rating5.00
  4. 2026-09-04reviews2rating5.00
  5. 2026-09-08reviews2rating5.00
  6. 2026-09-10reviews2rating5.00
  7. 2026-09-13reviews2rating5.00
  8. 2026-09-15reviews2rating5.00
  9. 2026-09-17reviews2rating5.00
Users
+5 since 01.09
46-52 · 9 readings
  1. 2026-09-0147
  2. 2026-09-0246
  3. 2026-09-0349
  4. 2026-09-0447
  5. 2026-09-0850
  6. 2026-09-1051
  7. 2026-09-1352
  8. 2026-09-1549
  9. 2026-09-1752
Rating
unchanged since 01.09
reviewsrating 5.00 · 9 readings
  1. 2026-09-01reviews2rating5.00
  2. 2026-09-02reviews2rating5.00
  3. 2026-09-03reviews2rating5.00
  4. 2026-09-04reviews2rating5.00
  5. 2026-09-08reviews2rating5.00
  6. 2026-09-10reviews2rating5.00
  7. 2026-09-13reviews2rating5.00
  8. 2026-09-15reviews2rating5.00
  9. 2026-09-17reviews2rating5.00

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: 2 match patterns.

  • https://www.googleapis.com/*
  • https://oauth2.googleapis.com/*
  • Sign you in with a Google account identity
  • Schedule work to run later alarms
  • Show you notifications notifications
Show the remaining 3
  • Run work in a hidden page offscreen
  • Store data in your browser storage
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

What changed recently

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

The publisher

SPKSoftware66 publishes 5 listings we track, 763 users between them.

  1. Microcontroller Pinout Reference SPKSoftware66 · Productivity · Developer · published 2025-12-03 609 users ★ 5.0
  2. Electrical Engineering Calculator SPKSoftware66 · Productivity · Education · published 2025-12-10 66 users ★ 5.0
  3. SAS - Student Attendance System SPKSoftware66 · Productivity · Education · published 2025-12-23 26 users ★ 5.0
Show 1 more from this publisher
  1. Smart File Renamer SPKSoftware66 · Productivity · Workflow · published 2026-06-26 10 users

Like this one

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

  1. Classroom Timer Describes nearly the same job, smaller audience 196 users ★ 5.0
  2. Test Timer Describes nearly the same job, smaller audience 100 users ★ 5.0
  3. Class Timer Describes nearly the same job, smaller audience 10 users
  4. Class Countdown Timer Describes nearly the same job, smaller audience 5 users
  5. Timer Countdown Describes nearly the same job, with an established audience 10k users ★ 4.8

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.