---
title: "Classroom Timer – Chrome extension stats, history and permissions"
description: "777 users, no ratings yet. Version 1.3, updated 2025-01-10. Requests 5 permissions."
url: "https://extensiontracker.com/extension/lkfdohclfbmlacdbnnbocgdbbdfjplaf"
---

# Classroom Timer

Live in the Chrome Web Store.

- Users: 777
- Rating: no ratings yet
- Last checked: 2026-09-27 05:03 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #27,648 of 264,703 live extensions
- Rank in Tools: #7,506 of 103,498

## The listing

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

Summary from the listing:

> Opens a new tab with a visual timer and random gradient background.

- Extension ID: `lkfdohclfbmlacdbnnbocgdbbdfjplaf`
- Developer: [Turbo Logic](https://extensiontracker.com/developer/ucbd80f197b08284c627e81352661ed42)
- Category: [Productivity › Tools](https://extensiontracker.com/category/productivity/tools)
- First published: 2024-02-13
- Last updated: 2025-01-10
- Version: `1.3`
- Size: 158 KiB
- Minimum Chrome: 88
- Languages (1): English (United States)
- Privacy policy: `https://raw.githubusercontent.com/thsnyder/Classroom-Timer/main/privacy-policy`
- Chrome Web Store: <https://chromewebstore.google.com/detail/classroom-timer/lkfdohclfbmlacdbnnbocgdbbdfjplaf>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Flkfdohclfbmlacdbnnbocgdbbdfjplaf>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 777 | – | – |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## What it can access

From the extension's manifest, in plain language.

### Browser features

- `alarms`: Run tasks on a schedule
- `notifications`: Show notifications
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs
- `windows`: Manage browser windows

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Brand Detector](https://extensiontracker.com/extension/lpdlpijaikjlpjlmdbpdaljgecahpdkg) | 183 | – | – | Tools |
| [Turbo Dash](https://extensiontracker.com/extension/ojiejgejlecdfkkcemeobbogdfjclicj) | 52 | 5.00 | 6 | Tools |
| [Cognitive Bias Daily](https://extensiontracker.com/extension/jgmjhhoapbphecmnmkakaklocjgdgibg) | 20 | – | – | Communication |
| [To-Do List 1984](https://extensiontracker.com/extension/allkofmndmnkidehkepkpodmnennmkdf) | 9 | – | – | Workflow & Planning |
| [PeakPositivity \| Motivational Quotes](https://extensiontracker.com/extension/dkoecindlfeapinhkdgjalopejbmnnhf) | 8 | 5.00 | 1 | Well-being |

All 6 extensions by [Turbo Logic](https://extensiontracker.com/developer/ucbd80f197b08284c627e81352661ed42).

## 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 2026-09-27 05:03 UTC; next check around 2026-09-30.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Classroom Timer” (lkfdohclfbmlacdbnnbocgdbbdfjplaf). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/lkfdohclfbmlacdbnnbocgdbbdfjplaf. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_lkfdohclfbmlacdbnnbocgdbbdfjplaf,
  title   = {Classroom Timer (lkfdohclfbmlacdbnnbocgdbbdfjplaf)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/lkfdohclfbmlacdbnnbocgdbbdfjplaf},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/lkfdohclfbmlacdbnnbocgdbbdfjplaf>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.