Comparison

풀다 vs Chalcack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

풀다

This app helps students manage their studies more efficiently by providing personalized practice problems and study materials. It offers features for both internal school exams and national college entrance exams, along with tools to track progress and review mistakes.

Highlights
  • AI-recommended practice problems
  • Internal school exam materials and past papers
  • Mock and national exam past papers (2015-2026)
  • Customizable problem sets
  • Mistake and bookmark notes
  • Study planner and progress tracking
  • Scholarship rewards for correct answers
Features
Read full description

문제는 더 똑똑하게, 공부는 더 꾸준히. 흩어진 공부 기록을 하나로 이어주는 앱, 풀다입니다. - 시험은 다가오는데, 뭘 더 해야 할지 막막할 때가 있죠. 내신도, 수능도, 오답도 — 전부 따로 관리하고 있어서 그래요. 풀다가 지금 필요한 문제를 바로 추천해줄게요. [ 이런 학생에게 추천해요 ] • 내신 시험 직전, 우리 학교 족보가 필요한 학생 • 수능·모의고사 기출을 체계적으로 풀고 싶은 수험생 • 공부를 시작해도 뭘 풀어야 할지 모르겠는 학생 • 오답과 취약 유형을 제대로 관리하고 싶은 학생 [ 주요 기능 소개 ] • 내신 시험지와 족보 기반 학습 - 우리 학교 내신 범위에 맞춘 시험지로 공부할 수 있어요. - 학교, 학년, 과목, 학기 기준으로 필요한 내신 자료를 찾아볼 수 있어요. - AI 시험지 만들기로 우리 학교 맞춤 내신 대비가 가능해요. • 모의고사·수능 기출 학습 - 2015년부터 2026년까지의 모의고사 및 수능 문제를 제공해요. - 학년, 과목, 월, 연도별로 필요한 기출 문제를 빠르게 찾을 수 있어요. - 모고/수능 실전 대비부터 취약 유형 복습까지 이어서 공부할 수 있어요. • AI 추천과 단계별 학습 - 학습 결과를 바탕으로 다음에 풀 문제와 단계를 추천해요. - 개념탄탄 모드와 일반 모드로 개념 학습부터 문제풀이까지 선택할 수 있어요. - 미니 모의고사, 취약 유형, 고난이도, 오답 복습으로 실력을 점검해요. • 나만의 문제집 만들기 - 필요한 과목과 범위로 나만의 문제집을 만들 수 있어요. - 개념 설명, OX 퀴즈, 빈칸 암기, 문제풀이까지 단계별로 학습해요. - 학습 결과에서 정답률과 풀었던 문제를 다시 확인할 수 있어요. • 오답노트와 북마크노트 - 틀린 문제는 오답노트에 쌓이고, 다시 풀며 복습할 수 있어요. - 중요한 문제는 북마크노트에 저장해 시험 전 빠르게 다시 볼 수 있어요. - AI 추천으로 비슷한 문제와 취약 개념까지 이어서 학습해요. • 질문방 - 모르는 문제는 질문방에서 질문하고 답변을 확인할 수 있어요. - 친구들의 질문을 보며 비슷한 고민도 함께 해결할 수 있어요. - 답변 활동과 미션을 통해 장학금과 질문권 보상도 받을 수 있어요. • 장학금, 용돈, 위시 아이템 - 문제를 풀고 정답을 맞히면 장학금이 쌓여요. - 모은 장학금은 풀다 스토어와 위시 아이템 구매에 사용할 수 있어요. - 부모님과의 용돈 계약으로 공부를 더 꾸준히 이어갈 수 있어요. • 풀다 플래너 - 오늘의 학습, 푼 문제 수, 공부 시간을 한눈에 확인할 수 있어요. - 단계별 학습 플랜과 직접 입력한 계획을 함께 관리할 수 있어요. - 매일 공부 흐름을 보고 주간·일일 학습 리포트로 점검해요. 내신부터 수능까지, 문제는 더 효율적으로. 지금 풀다에서 시작해보세요. 이용약관: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Chalcack

This AI-powered app helps students understand homework problems by providing step-by-step explanations in a personalized character's voice. Users can snap photos of any problem, ask follow-up questions, and save solved problems for review. It supports a wide range of subjects and allows for custom character creation.

Highlights
  • AI-powered step-by-step explanations
  • Personalized tutor characters
  • Snap photos of any homework problem
  • Interactive Q&A for any step
  • Subject-specific learning support
  • Saved problem history for review
  • Custom character creation
Features
Read full description

Chalcack is an AI homework helper: snap a photo of any problem and the character you picked explains every step, in their own voice. Free for 5 problems a day. Snap math, science, reading or history homework, handwritten or printed. Chalcack gives you the answer, a short summary, every step, and the concept the problem tests. Stuck on a step? Ask your character right there, and keep asking until it clicks. More than 180,000 students study with Chalcack. Study with your crush, not a cold answer key. ■ HOW IT WORKS 1. Snap the problem: handwriting, textbooks, worksheets and practice tests all work. 2. See the answer and why: every step, plus the concept behind it. 3. Ask about any step in the same thread. 4. Review before the test: solved problems are saved by subject. ■ YOUR CHARACTER, YOUR TUTOR • Pick from 7,900+ public characters made by students. • Make your own with a photo, a name and a personality. • Share it with a code and study with the same character as your friends. • Every solution and answer comes in your character's voice. ■ SUBJECTS • Math: pre-algebra, Algebra I & II, geometry, trigonometry, precalculus, calculus, statistics, word problems and proofs. Reads graphs and figures too. • Science: physics, chemistry, biology, earth science, with formulas and units in every step. • Reading & writing: literary devices, main idea, evidence, grammar, essay structure. • English: grammar, vocabulary, reading passages. • History & social studies: U.S. and world history, government, geography, economics. • Test prep: SAT®, ACT® and AP® style questions. ■ FREQUENTLY ASKED QUESTIONS Is Chalcack free? Yes. You get 5 problems and 20 questions free every day, and can watch an ad for more. PRO gives unlimited problems and questions with no ads. Does it read handwritten homework? Yes. Snap equations from your notebook or a problem you're halfway through. Graphs, tables and geometry figures work too. Won't I just copy the answer? Every answer shows the reason for each step, and you can keep asking about any step. Understand it, then try the problem again yourself. Does it explain wrong answer choices? Yes. It shows why the right answer is right and why each other choice doesn't fit. Can I make my own character? Yes. Choose a photo, a name and a personality. Keep it private or make it public for other students. Can AI make mistakes? Sometimes. If an answer looks off, ask your character to double-check, or report it from the solution screen. ■ SUBSCRIPTION INFORMATION • Chalcack PRO: unlimited problems and questions, no ads. • PRO Monthly: $9.99 per month. PRO Yearly: $79.99 per year (about $6.67 a month). Prices may vary by country. • Payment is charged to your Apple ID account at confirmation of purchase. • The subscription renews automatically unless canceled at least 24 hours before the end of the current period. • Manage your subscription and auto-renewal in your App Store account settings. Privacy Policy: https://www.chalcack.com/privacy Terms of Use (EULA): https://www.chalcack.com/terms

Screenshots

풀다4 screens
Chalcack4 screens

Verdict

The call

The clearest difference is ads: 풀다 at none against Chalcack's shown. 풀다 also leads on iOS requirement (15.0 vs 18.5). Chalcack's advantage is update cadence (daily vs every 4 days) and rating (4.8 vs 4.6). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 풀다 sells 10 in-app purchases, starting at $19.99 per month and Chalcack sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Chalcack holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 16 and 18 respectively. Written reviews point the same way: 90% of 풀다's written reviews are positive against 97% of Chalcack's.

UpkeepUpdate frequency

풀다 ships an update every 4 days, Chalcack daily. The most recent releases landed on November 13, 2026 and November 14, 2026 respectively.

Scorecard4 real differences · 6 level
풀다 versus Chalcack: the parameters behind the verdict, then further details
Parameter풀다Chalcack
PriceFreeFree
Rating4.6 (16 ratings)4.8 (18 ratings) — better
Positive reviews90.2% of reviews97.4% of reviews — better
Number of ratings1618 — better
Update frequencyEvery 4 daysDaily — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.5
Further details — not scored
Size403 MB49 MB
Age rating4+4+
DeveloperFilledU Inc.Dong Hae Jang

Customer experience

풀다

All ratings16 ratings
Positive87.5%
Neutral6.3%
Negative6.3%
Written reviews61 reviews
Positive90.2%
Neutral1.6%
Negative8.2%

Chalcack

All ratings18 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews38 reviews
Positive97.4%
Neutral2.6%
Negative0.0%

In-app purchases

10 purchases

풀다

Subscriptions1
  • 풀다 패스 월 구독$19.991 Month
One-time9
  • 질문권 10개$0.99
  • 질문권 50개$6.99
  • 질문권 100개$14.99
Show 6 more
  • 스탠다드 30일 이용권$44.99
  • 풀다 패스 180일 이용권$89.99
  • 스탠다드 90일 이용권$99.99
  • 풀다 패스 360일 이용권$149.99
  • 스탠다드 180일 이용권$199.99
  • 스탠다드 360일 이용권$299.99
4 purchases

Chalcack

Subscriptions4
  • Monthly Pro (Special Offer)1 Month trial$9.991 Month
  • Premium subscription$9.991 Month
  • Yearly Pro (Special Offer)1 Year trial$79.991 Year
Show 1 more
  • Yearly Premium subscription$79.991 Year

Questions

Is 풀다 free?
풀다 is free to download, with in-app purchases available.
Is Chalcack free?
Chalcack is free to download, with in-app purchases available.
Which has better reviews, 풀다 or Chalcack?
Chalcack is rated higher. 풀다 averages 4.6 out of 5 from 16 ratings, while Chalcack averages 4.8 from 18 ratings.
Do 풀다 or Chalcack have ads?
Chalcack shows ads; 풀다 does not.
Which is updated more often, 풀다 or Chalcack?
풀다 ships an update every 4 days, and Chalcack daily. Most recently, 풀다 was updated on November 13, 2026 and Chalcack on November 14, 2026.

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