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GradeBac - ManageBac Grade Calculator

Chrome extension by GradeBac · Productivity · Education

A Chrome extension in Productivity · Education with 1 000 users, a small but real audience.

Specific sites only: 95 match patterns.

What the developer says, and 4 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
1 000
Rating
4.4 (5 ratings)
Users, last 14 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
2.1
Updated in the store
2026-06-03
Published
2025-09-18
Manifest
V3
Browser access
1 permission, 95 site patterns

How it has moved

Users
unchanged since 01.09
1k · 2 readings
  1. 2026-09-011k
  2. 2026-09-141k
Rating
unchanged since 01.09
reviewsrating 4.40 · 2 readings
  1. 2026-09-01reviews5rating4.40
  2. 2026-09-14reviews5rating4.40
Users
unchanged since 01.09
1k · 2 readings
  1. 2026-09-011k
  2. 2026-09-141k
Rating
unchanged since 01.09
reviewsrating 4.40 · 2 readings
  1. 2026-09-01reviews5rating4.40
  2. 2026-09-14reviews5rating4.40

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 95 match patterns.

  • *://*.managebac.com/*
  • *://*.managebac.cn/*
  • *://*.managebac.us/*
Show the remaining 9
  • *://*.managebac.uk/*
  • *://*.managebac.de/*
  • *://*.managebac.fr/*
  • *://*.managebac.jp/*
  • *://*.managebac.ca/*
  • *://*.managebac.au/*
  • *://*.managebac.it/*
  • *://*.managebac.in/*
  • *://*.managebac.br/*
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

GradeBac.

Like this one

Listings the catalog judges closest in what they say they do.

  1. Google Classroom Grade Calculator | GCGC Describes nearly the same job, smaller audience 61 users ★ 5.0
  2. Infinite Campus Grade Predictor Describes nearly the same job, smaller audience 939 users ★ 5.0
  3. Better Gradebooks Describes nearly the same job, smaller audience 17 users ★ 5.0
  4. ManageBac Grade Average Describes nearly the same job, smaller audience 47 users ★ 5.0
  5. The MDCPS Grade Forecaster Describes nearly the same job, smaller audience 22 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.