---
title: "Mental Arithmetic challenge – Chrome extension stats, history and permissions"
description: "13 users, no ratings yet. Version 1.0.2, updated 2025-09-12. Requests 0 permissions."
url: "https://extensiontracker.com/extension/kkfijllpelljnmcfgebmopacpakpaknb"
---

# Mental Arithmetic challenge

Live in the Chrome Web Store.

- Users: 13
- Rating: no ratings yet
- Last checked: 2026-09-27 04:25 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #138,609 of 264,702 live extensions
- Rank in Education: #5,113 of 11,063

## The listing

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

Summary from the listing:

> Mental Arithmetic Challenge Overview: The Mental Arithmetic Challenge is an engaging and educational game designed to sharpen your…

- Extension ID: `kkfijllpelljnmcfgebmopacpakpaknb`
- Developer: [tom.maclean2](https://extensiontracker.com/developer/u56183ad335aae282516af8ad424c5ea2)
- Category: [Productivity › Education](https://extensiontracker.com/category/productivity/education)
- First published: 2024-07-04
- Last updated: 2025-09-12
- Version: `1.0.2`
- Size: 585 KiB
- Minimum Chrome: 88
- Languages (1): English
- Support page: `https://arcadebytom.com/contact.html`
- Chrome Web Store: <https://chromewebstore.google.com/detail/mental-arithmetic-challen/kkfijllpelljnmcfgebmopacpakpaknb>
- View the code or download the CRX, in CRX Peek: <https://crxpeek.com/?id=kkfijllpelljnmcfgebmopacpakpaknb>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 13 | – | – |

## 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.

It asks for no permissions.

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Blackjack By Tom](https://extensiontracker.com/extension/pmhlnhkpkibmmdnkknhdjhaeeolhhbfe) | 3,000 | 4.86 | 7 | Games |
| [Poker By Tom](https://extensiontracker.com/extension/akikcgicmmcccghcmfchijfbfjgkbidn) | 1,000 | 5.00 | 3 | Games |
| [Roulette By Tom](https://extensiontracker.com/extension/dpgmgodmhgnfkfljkngjhapmecpbhicb) | 1,000 | 4.33 | 3 | Games |
| [Slots by Tom](https://extensiontracker.com/extension/fndclicgemoeakkfelllgipnodcockgo) | 167 | – | – | Games |
| [Farming Tycoon By Tom](https://extensiontracker.com/extension/ghodkeoialdbgellinloecdidkhieaei) | 110 | 5.00 | 1 | Games |
| [Egyptian Slots BT](https://extensiontracker.com/extension/lmgflhjpkfddhhjgbcnkkmmbeciiifjp) | 17 | – | – | Games |
| [2048 BT](https://extensiontracker.com/extension/nibhnijkepjaihcpnfonoenbjhkeophm) | 14 | – | – | Games |
| [Mazes 2.0 BT](https://extensiontracker.com/extension/innbgipjccejdlhlpbkpnhgcfddkhpbp) | 4 | – | – | Games |

All 9 extensions by [tom.maclean2](https://extensiontracker.com/developer/u56183ad335aae282516af8ad424c5ea2).

## 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 04:25 UTC; next check around 2026-10-02.

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

## Cite this page

Extension Tracker. “Mental Arithmetic challenge” (kkfijllpelljnmcfgebmopacpakpaknb). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/kkfijllpelljnmcfgebmopacpakpaknb. Accessed 2026-09-28.

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

---

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