Cooling signalNo paid features detectedMedium-risk permissions

Demarest GPA Calculator

This extension calculates the GPA for Northern Valley Regional High School at Demarest Students

Users515Current public install base

Rating5.0Store average score

Reviews2Public review volume

Manifest versionV3Extension platform version

7-day growth-14Net users gained this week

7-day growth rate-2.65%Relative weekly velocity

Preview

Demarest GPA Calculator Media preview

1 assets

Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

Rating trend

7-day rating trend

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7-day rating change

Start

5.00

Latest

5.00

7-day rating change

0.00

2026年7月16日2026年7月22日

Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthGrowing

+2+0.39%

7-day growthDeclining

-14-2.65%

30-day growthDeclining

-347-40.3%

Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version3.3.4

ManifestV3

Size40.55KiB

Languages1English (United States)

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

free, easy, and open-source GPA calculator for NVD students.

Feedback:

https://github.com/tenebo/DemarestGPA/issues

Change Log:

[3.3.X]

- patch genesis changes

Reviews

Recent review snapshot

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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 text2Synced review bodies

Total ratings / reviews2Chrome 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.

5★

4★

3★

2★

1★

Ian2024年3月24日

Great work, helps me make sure my grades are a-ok!

Burrito BTW2023年1月24日

ジェイーさま　は　さいこう　です！

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AI product read

GPA Calculator

Helps students at Northern Valley Regional High School at Demarest quickly calculate their weighted and unweighted GPA from their online grade portal without manual calculation.

1. Student logs into their school's grade portal (Genesis) in Chrome. 2. Student clicks the Demarest GPA Calculator extension icon. 3. Extension popup appears with a 'CALCULATE' button. 4. Student clicks 'CALCULATE'. 5. Extension injects a content script into the grade portal page. 6. Content script parses the grade table from the page DOM, extracts course names and grades. 7. Extension calculates weighted and unweighted GPA based on predefined course types and grade values. 8. Results are displayed on the page. Student can click the result to toggle an interactive table where they can adjust individual grades to see potential GPA outcomes.

Target users: High school students at Northern Valley Regional High School at Demarest (NVD) / Parents of NVD students

The extension relies on specific DOM selectors to parse the school's grade portal (Genesis). If the school updates their portal's HTML structure, the extension may break (as noted in the changelog with 'patch genesis changes').
The PayPal link in the store metadata is a donation link and does not indicate paid features, but future versions could introduce them.
The extension only works on the specific grade portal page it targets; it does not scrape or store data externally.

Monetization

No paid features detected

The extension source code contains no payment logic, no subscription gating, and no premium feature flags. The description explicitly states it is 'free, easy, and open-source'. The only PayPal reference is in the Chrome Web Store support URL (paypal.me/paid529), which appears to be a personal donation link for the developer, not a payment platform integrated into the extension for paid features.

Confidence: 90
Payment platform: PayPal
Source: AI / High
Login required: No
Reason: The extension is a standalone GPA calculator that runs as a popup and injects a content script into the current tab. There is no login UI, no authentication logic, and no reference to any account system in the source code. The user simply opens the popup and clicks 'CALCULATE' to process the grades visible on the current page.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：activeTab、scripting

Publisher

Inpyo Lee

Independent publisher

Email: [email protected]
Phone: --
Address: --

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