Checker Plus for Google Calendar™

Name: Checker Plus for Google Calendar™
Rating: 4.2403 (129 reviews)
Author: Jason Savard

By: Jason Savard

See your next events, get meeting notifications and snooze events without opening the Google Calendar page!

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Features & Capabilities

Checker Plus for Google Calendar is a powerful desktop extension that keeps you on top of your schedule with voice and desktop reminders, quick event creation, and deep Google Calendar integration — all without opening the calendar page.

Key features include natural-language quick-add, right-click capture from any page, Gmail or website imports, and offline reminders. You can customize popup views, see countdowns on the icon, drag and drop events, and receive reliable notifications with snooze and voice alerts. It also supports Google Tasks, birthday and family calendars, and accessibility enhancements for all users.

User Growth & Download Statistics

Add-on Calendar Task Management Accessibility Developer Tools

By:

Daily users:

Rating:

Version:

45.3.3 Last updated: 2026-06-25

Version code:

6324143

Creation date:

2016-10-06

Risk:

Permissions:

Size:

1.25MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-11

Compare stats and ranking:

Ranking

# 1,352 ▼ 5

Other rankings

#35 in Alerts & Updates

#64 in Feeds, News & Blogging

#214 in Appearance ▼ 1

#2 in google calendar keyword 36

#5 in calendar keyword 28

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Other platforms

Checker Plus for Google Calendar™ (v45.3.3)

300,000 4.42

(2,057)

Checker Plus for Google Calendar™ (v45.3.3)

73,446 4.30

(29)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Jason Savard

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/checker-plus-for-calendar/

Website:

https://jasonsavard.com/forum/categories/checker-plus-for-google-calendar-feedback

Permission Change History

2024-12-09: Version 39.0.5 → 39.1.2

Add Permissions: identity unlimitedStorage

2024-09-12: Version 38.0.3 → 39.0.1.1

Add Optional host permissions: https://calendar.google.com/ https://www.facebook.com/

2024-03-07: Version 34.0.1 → 35.0.4.1

Add Permissions: scripting

Remove Permissions: https://www.googleapis.com/*

Remove Optional permissions: https://calendar.google.com/ https://www.facebook.com/

User Reviews

User reviews show the add-on is convenient and customizable, with easy notifications and snooze options, and useful for getting calendar alerts without keeping a tab open. However, recurring issues include reliability problems with sign-in/access, notifications not firing, toolbar icons disappearing, poor UI and a donation-based approach to appearance customization, and limited snooze options (no 24-hour snooze). The overall sentiment is mixed: many users praise its functionality when it works, while others report it failing or being hard to use.

Pros

Notifies with easy-to-use dismissal and snooze options.
Highly customizable extension.
Provides calendar alerts without needing to keep the calendar tab open.
Generally positive and convenient when functioning well.

Cons

Unattractive UI and a donation-based system to customize appearance.
Sign-in/access reliability problems (Google auth failures and access prompts).
Notifications and toolbar icons can be unreliable (not firing, disappearing).
Visibility issues (icon not appearing in toolbar/taskbar).
Limited snooze options (no 24-hour snooze, limited predefined durations).

Recent reviews

Доволен полностью

by Pe*****, 2026-04-15

by Ma*****, 2026-02-28

by ma*****, 2026-01-30

View all user reviews ›

Is Checker Plus for Google Calendar™ Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Checker Plus for Google Calendar™ requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Checker Plus for Google Calendar™ is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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