# 또풀 > A learning app that solves past Computer Proficiency Test, TOEIC, and certification exam questions and re-solves only the incorrect answers using interval repetition. Canonical page: [https://chrome-stats.com/d/com.jun213.ddopool](https://chrome-stats.com/d/com.jun213.ddopool) ## Overview - **ID:** `com.jun213.ddopool` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Jun Lab - **Category:** EDUCATION - **Downloads:** 26 - **Last updated:** 2026-10-06 - **First published:** 2026-10-06 - **Publisher country:** KR - **Data as of:** 2026-11-02 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.jun213.ddopool) - **Website:** [https://jun1485.github.io/ddopool/](https://jun1485.github.io/ddopool/) - **Privacy policy:** [https://jun1485.github.io/ddopool/privacy](https://jun1485.github.io/ddopool/privacy) ## Description Ttopul is a learning app that allows you to solve past exam questions for qualification and language tests, and retrieves the questions you got wrong just as you are about to forget them.

■ Start Immediately Without Login
You can use all learning features without creating an account. Your study records are saved on your device, and they will synchronize between devices once you connect your account later.

■ Rewind Incorrect Questions with Spacing
The SM-2 algorithm calculates your review schedule. It increases the interval for correct answers and shortens the rewind for incorrect answers, concentrating time on questions you haven't memorized.

■ Daily Goals Tailored to Your Exam
Enter the exam date and the number of remaining questions to calculate your recommended daily study amount. It automatically configures the questions you will solve today by reflecting your review schedule and weak subjects.

■ Reports Showing Your Weaknesses
You can check your correct answer rate by subject, consecutive study days, study time zones, and mock exam trends. You can also leave notes you have organized yourself in the incorrect answer notebook.

■ Request If Your Desired Exam Is Not on List
If the exam you are preparing for is not on the list, you can request its creation and receive votes from other users. Exams that generate sufficient demand will be released after a review process.

■ Available Exams

Computer Proficiency Level 1 & 2, Information Processing Engineer, Information Security Engineer, Word Processor, Linux Master Level 2, Network Administrator Level 2, SQLD, ADsP, Big Data Analyst, Industrial Safety Engineer, Social Survey Analyst Level 2, Korean History Proficiency Test, Grade 9 Civil Service Korean Language, Drone Pilot Qualification Type 1, TOEIC RC

■ Notice

This app has no affiliation, sponsorship, or approval relationship with the organizing or administering bodies of each exam. Exam names and trademarks are the property of their respective rights holders and are displayed solely for the purpose of exam identification. The questions provided may differ from the actual exam questions. ## Rankings - #2,499,063 — Overall ## Similar extensions and apps - [리풀 repull - 복습 아카이브·오답노트](https://chrome-stats.com/d/com.repull.app) — 19 users - [New Practice for TOEIC® Test](https://chrome-stats.com/d/com.tvt.toeictest.newformat2019) — 170,216 users, 5.00 / 5 - [똑패스 토익](https://chrome-stats.com/d/com.tokpass.toeic) — 1,269 users - [Edmicro TOPIK](https://chrome-stats.com/d/vn.onluyen.topik) — 19,572 users - [기출문제 풀이](https://chrome-stats.com/d/com.raonis.qztest2) - [KTOPIK - Learn Korean TOPIK](https://chrome-stats.com/d/com.floatktopik.k_topik_parse) — 31,312 users - [おたすけ Topik](https://chrome-stats.com/d/com.wonjongseo.numberone_topik) — 14 users - [TOPIK Master: Learn Korean](https://chrome-stats.com/d/bot.studychat.topik) — 17,933 users - [Topik Master](https://chrome-stats.com/d/com.topikmaster.app) — 1,511 users - [TOPPERS EXAM PREPARATION APP](https://chrome-stats.com/d/co.edvin.ssefx) — 698 users - [TopikON](https://chrome-stats.com/d/com.keuhan.topik) — 6,173 users - [2017년 행정사 기출문제](https://chrome-stats.com/d/com.knowledgeware.modelexecutor80.HJS2017_AI_2044469073) — 52 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.jun213.ddopool)