RepCheck — Opening Repertoire Checker icon

RepCheck — Opening Repertoire Checker

by repchecker@oberschm.id · Games
Manifest V3 Free
View in Chrome Web Store Data as of 12 Nov 2026

Markiert Abweichungen vom Eröffnungsrepertoire auf chess.com & lichess (PGN oder RookHub); chessable: FEN-Tools + RookHub.

Users
17
+2 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#156K
#138K among extensions
Version
1.74.0
updated 7 Nov 2026

Users

monthly, 5 months
0918Jun 2026Sep 2026Nov 2026
Latest, 12 Nov 2026: 17 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months
001Jun 2026Sep 2026Nov 2026
Latest, 12 Nov 2026: 0 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 RepCheck — Opening Repertoire Checker

RepCheck analyzes your chess.com and lichess.org games against your opening repertoire in real time, highlighting exactly where you went off-book — directly in the analysis view.

Growth

WindowUsersChangeRatingsRating
7 days−1−5.6%00.00
30 days+2+13.3%00.00

Version history

37 versions recorded
1.74.07 Nov 2026
1.73.430 Oct 2026
1.73.225 Oct 2026
1.73.18 Oct 2026
1.73.07 Oct 2026
1.68.024 Sep 2026
1.64.023 Sep 2026
1.63.022 Sep 2026

Details

Category
Games
First seen
9 Jun 2026
Size
205 KB
Languages
en
Pricing
Free
Privacy policy
kahalm.github.io
Support
github.com
Extension ID
mhddbldcaancdahlochjanpkkboaccpn

Permissions and risk

Elevated riskimpact 3, likelihood 3
Permissions
scriptingactiveTabstorage
Site access
https://*/*http://localhost/*http://127.0.0.1/*
Can read and change data on every website you visit.

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