R3 - Cross-multiplication icon

R3 - Cross-multiplication

by Igor Santos · Workflow & Planning
FeaturedManifest V3 Free
View in Chrome Web Store Data as of 17 Oct 2026

A cute pop-up to help the routine of those who use cross multiplication for all things in life!

Users
87
−5 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
3
0 in 30 days
Store rank
#88K
#74K among extensions
Version
1.1.0
updated 10 Jul 2026

Users

monthly, 3 years
1060109Aug 2023Apr 2025Oct 2026
Latest, 17 Oct 2026: 87 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
024Aug 2023Apr 2025Oct 2026
Latest, 17 Oct 2026: 3 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About R3 - Cross-multiplication

A simple cross multiplication / proportions popup :) -=-=-= Updates =-=-=- - v1.1.0 (July 2026): comma support, depending on your browser's language; new icon that works in dark mode, in celebration of the almost 15 YEARS of this extension 🎉 - v1.0.2 & v1.0.3 (Nov 2022): BR/PT Portuguese Store support - v1.0.0 & v1.0.1 (Feb 2017): English locale fix; autofocus and keyboard events; Store release improvements - v0.9.0 (Dec 2012): initial release

Growth

WindowUsersChangeRatingsRating
7 days−3−3.3%00.00
30 days−5−5.4%00.00
6 months−14−13.9%00.00
1 year−14−13.9%−10.00

Version history

4 versions recorded
1.1.010 Jul 2026
1.0.312 Nov 2022
1.0.220 Aug 2022
1.0.121 Feb 2017

Details

Category
Workflow & Planning
First seen
21 Feb 2017
Size
253 KB
Languages
en, pt-BR, pt-PT
Pricing
Free
Support
github.com
Extension ID
nofpfpgofpdllnjhnocoenadpmlpbgjj

Permissions and risk

Minimal riskimpact 0, likelihood 1

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