CF-Predictor
Developer Tools
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Users
50K
Rating
4.1
Reviews
171
7D Growth
0|0%
Cooling signalNo paid features detectedLow-risk permissions
AtCoder Calendar
Make it easy to add AtCoder contests to your Google Calendar.
Users314Current public install base
Rating5.0Store average score
Reviews4Public review volume
Manifest versionV3Extension platform version
7-day growth-6Net users gained this week
7-day growth rate-1.88%Relative weekly velocity
Preview
3 assetsAtCoder Calendar Media preview
Trend
User growth trend
Review user movement across collected snapshots.
User Growth Over Time
Rating trend
7-day rating trend
View collected rating snapshots from the latest 7-day window to assess rating stability.
7-day rating change
Start
5.00
Latest
5.00
7-day rating change
0.00
2026年7月13日2026年7月17日
Growth overview
Daily, weekly, and monthly growth
Compare 1-day, 7-day, and 30-day net growth and growth rate.
1-day growthNo data
----7-day growthDeclining
-6-1.88%30-day growthNo data
----Technical snapshot
Version, languages, and crawl freshness
Review publication date, version, supported languages, and crawl timestamps.
Version1.1.4
ManifestV3
Size18.2KiB
Languages2English / 日本語
Published
Store updated
Last crawled
English日本語
Overview
Product summary
Review the store description, core capabilities, and common use cases.
Generate a schedule link for Google Calendar on the AtCoder contest site.
It becomes easy to add to your calendar for each contest.
* This is an unofficial extension, so use at your own risk.
If you have any bugs or requests for additional features, please send them to
https://github.com/penicillin0/AtCoder-Google-Calender/issues
Reviews
Recent review snapshot
Inspect the latest comments and rating distribution.
Store average score5.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average5.0Average computed only from synced review bodies below
Reviews with text3Synced review bodies
Total ratings / reviews4Chrome Web Store public rating/review count
Store average score: 5.0. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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good app
Very useful! Thank you!
Simple but useful! Thanks!