Teacher's Gradebook - Additio
Chrome Web Store listing by Didactic Labs, S.L.
A Chrome extension with 267 users, barely installed.
No site access is declared in the manifest, so it cannot read the pages you open on its own.
What the developer says, and 4 screenshots
Loading from the Chrome Web Store. Open the listing if it does not appear.
- Users
- 267
- Users, last 17 days
- +163
- Rating, last 30 days
- Not watched long enough to say
- Version
- 3.5
- Updated in the store
- 2017-06-07
- Published
- 2017-02-28
- Manifest
- V2
- Browser access
- No permissions declared
How it has moved
- 2026-09-01104
- 2026-09-02154
- 2026-09-04199
- 2026-09-07223
- 2026-09-08241
- 2026-09-09231
- 2026-09-13252
- 2026-09-15251
- 2026-09-17267
- 2026-09-01reviews4
- 2026-09-02reviews4
- 2026-09-04reviews4
- 2026-09-07reviews4
- 2026-09-08reviews4
- 2026-09-09reviews4
- 2026-09-13reviews4
- 2026-09-15reviews4
- 2026-09-17reviews4
- 2026-09-01104
- 2026-09-02154
- 2026-09-04199
- 2026-09-07223
- 2026-09-08241
- 2026-09-09231
- 2026-09-13252
- 2026-09-15251
- 2026-09-17267
- 2026-09-01reviews4
- 2026-09-02reviews4
- 2026-09-04reviews4
- 2026-09-07reviews4
- 2026-09-08reviews4
- 2026-09-09reviews4
- 2026-09-13reviews4
- 2026-09-15reviews4
- 2026-09-17reviews4
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
No site access is declared in the manifest, so it cannot read the pages you open on its own.
We have not read this listing's manifest since we started keeping permission names. The counts above come from the last time we did.
What changed recently
Nothing has moved on this listing since we started watching it.
The publisher
Didactic Labs, S.L.. Listed website: web.additioapp.com.
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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 doesFigures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.