Stable signalNo paid features detectedMedium-risk permissions

testcase.ac

testcase.ac의 확장 프로그램

Users1KCurrent public install base

Rating5.0Store average score

Reviews4Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

Preview

testcase.ac Media preview

2 assets

Trend

User growth trend

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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15日2026年7月21日

Growth overview

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Technical snapshot

Version, languages, and crawl freshness

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Version0.3.1

ManifestV3

Size64.87KiB

Languages1한국어

Published--

Store updated--

Last crawled--

Overview

Product summary

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

testcase.ac를 통해 내가 틀린 문제의 반례를 찾아보세요.

백준 문제 페이지에 들어갔을 때, testcase.ac에서 반례를 찾을 수 있는 문제라면 이를 유저에게 팝업으로 알려줍니다.

문제 목록에서는 반례를 찾을 수 있는 문제를 표시해줍니다.

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 / 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.

5★

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1★

kgw0513 (kgw0513)2025年3月19日

누가 얼마나 기여를 했는지도 알려주면 더 좋을거 같아요

알땅콩2025年1月21日

백준 쓸때 항상 쓰고있습니다. 화이팅

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AI product read

Find counterexamples (반례) for problems on BOJ (Baekjoon Online Judge, acmicpc.net)

Users who get problems wrong on BOJ can use this extension to find counterexamples that expose bugs in their solutions, helping them debug and improve their code.

1. User visits a BOJ problem page (acmicpc.net/problem/{id}). 2. Content script extracts the problem ID and sends it to the background worker. 3. Background worker fetches a batch of problem IDs from https://testcase.ac/api/extension/problems to check which have counterexamples. 4. If the current problem has a counterexample, the extension shows a badge and opens a popup. 5. On problem list pages, the extension marks problems that have available counterexamples with an icon linking to testcase.ac.

Target users: BOJ (Baekjoon Online Judge) users, competitive programmers, students solving algorithm problems

The popup chunk (chunks/popup-Cx_znDKv.js) is heavily minified React code (~145KB), making it difficult to fully analyze the popup UI logic. However, no login or payment-related code was found in grep searches.
The extension communicates with https://testcase.ac which may have its own login/paid system, but the extension itself does not gate features or require authentication.
The extension is in version 0.3.1, suggesting it is still in early development; future versions may add login or paid features.

Monetization

No paid features detected

No payment, subscription, premium, upgrade, billing, or license-gating code found in the extension. The extension calls a free API endpoint without any authentication or plan checks. The 'pro' and 'license' keyword matches in the static analysis are from React library source code (react.production.min.js, @license headers), not from the extension's own business logic. The extension appears to be completely free with no paid features.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension does not implement any login UI, authentication flow, or credential storage. The content script on acmicpc.net and the background worker communicate with https://testcase.ac/api/extension/problems without any auth headers, tokens, or session cookies. The popup is a simple React UI with no login/sign-up screens. Users can use the extension's core functionality (finding counterexamples for BOJ problems) without creating an account or logging in.

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、storage

Publisher

dlwocks31

Independent publisher

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

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Permissions

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