---
title: "Addition and Subtraction – Chrome extension stats, history and permissions"
description: "25 users, no ratings yet. Version 1.2, updated 2023-07-27. Requests 2 permissions."
url: "https://extensiontracker.com/extension/gcfbgldheflkffckpodpmkjlkbapmfnc"
---

# Addition and Subtraction

Live in the Chrome Web Store.

- Users: 25
- Rating: no ratings yet
- Last checked: 2026-09-27 01:32 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #108,986 of 264,703 live extensions
- Rank in Just for Fun: #5,501 of 9,242

## The listing

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

Summary from the listing:

> Practice simple addition and subtraction expression

- Extension ID: `gcfbgldheflkffckpodpmkjlkbapmfnc`
- Developer: [biplobsd11](https://extensiontracker.com/developer/u188551698101dd4d3a675fd3173a36e8)
- Trader status: Not declared a trader under EU law
- Category: [Lifestyle › Just for Fun](https://extensiontracker.com/category/lifestyle/fun)
- First published: 2023-07-25
- Last updated: 2023-07-27
- Version: `1.2`
- Size: 416 KiB
- Minimum Chrome: 88
- Languages (1): English (United States)
- Website: `biplobsd.me`
- Support page: `https://github.com/biplobsd/as`
- Chrome Web Store: <https://chromewebstore.google.com/detail/addition-and-subtraction/gcfbgldheflkffckpodpmkjlkbapmfnc>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fgcfbgldheflkffckpodpmkjlkbapmfnc>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 25 | – | – |

## 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

- `identity`: Sign you in with your Google account
- `storage`: Save settings and data in your browser

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Youtube Subscriptions Transfer](https://extensiontracker.com/extension/fanknehiohibiphenfaigbmefncbheaa) | 10,000 | 4.86 | 681 | Tools |
| [YGPT: YouTube GPT](https://extensiontracker.com/extension/ckkahgcopajmaohkdnijmmmlhjddeoan) | 139 | – | – | Tools |
| [BLC Auto Login](https://extensiontracker.com/extension/jfcbfdeolomalpheclmhggngjkocjjcb) | 13 | – | – | Workflow & Planning |
| [WebMerge - Multi-Website Feed Aggregator](https://extensiontracker.com/extension/ccdghdefafiefoffeiafalaenofkgjeo) | 12 | – | – | Tools |

All 5 extensions by [biplobsd11](https://extensiontracker.com/developer/u188551698101dd4d3a675fd3173a36e8).

## 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 01:32 UTC; next check around 2026-10-26.

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

## Cite this page

Extension Tracker. “Addition and Subtraction” (gcfbgldheflkffckpodpmkjlkbapmfnc). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/gcfbgldheflkffckpodpmkjlkbapmfnc. Accessed 2026-09-28.

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

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/gcfbgldheflkffckpodpmkjlkbapmfnc>. 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`.