Comparison

Column Addition vs 영 단어즙

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

Head to head
About

Column Addition

This educational app teaches and reinforces the column addition method with an interactive interface. Users can solve custom or random problems with adjustable number sizes and receive visual feedback on their progress. It includes optional jigsaw puzzles as a reward for solving problems.

Highlights
  • Interactive column addition learning
  • Customizable number of digits
  • Random and custom problem generation
  • Visual feedback and animations
  • Optional jigsaw puzzles
  • Adjustable interface colors and animations
Features
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Column Addition helps students learn and practice the column addition method step by step. The app aligns the numbers automatically so students can focus on solving each column. Carrying is handled visually with animations, helping students understand how digits move from one column to the next. Students can solve randomly generated problems or enter their own addition problems. The number of digits can be adjusted, making the app useful for different skill levels. Column addition is also known as columnar addition, long addition, or longhand addition. Features: - Add 2 or 3 numbers - Each number can have 1–5 digits - Randomly generated or manually entered problems - Automatic number alignment - Visual animated carrying - Current operation for each column can be hidden - Operands of the current operation can be highlighted - Customizable interface colors - Adjustable animation speed - Different interfaces for iPhone and iPad - 25 six-piece animal jigsaw puzzles - Puzzle feature can be turned on or off Reviews and Endorsements: Fun Educational Apps: “iDevBooks educational math apps make math enjoyable and entertaining. One of my sons was struggling with math and I must say the use of iDevBooks math apps has really helped him.” Professor Tim Pelton reviewed the sister app Column Subtraction: “Because no wrong entries are allowed the app provides a passive form of positive reinforcement and your child will likely improve in both confidence and competence with respect to the procedure.” Teacher endorsement: “The Math apps by Esa Helttula allow students to practice and reinforce the specific computation strategies taught in class, with as much or as little scaffolding as necessary. They also provide individualized feedback to each student, with an immediacy that is not always possible through pencil and paper practice.” — Rita Zeni, Ecole Sandy Hill Elementary, Abbotsford, BC, Canada Other iDevBooks Math Apps: Other iDevBooks math apps include Column Subtraction, Long Multiplication, Long Division, Lattice Multiplication, Visual Multiplication Table, Fraction Math, Partial Differences Subtraction, Partial Quotients Division, Partial Sums Addition, Decimal Rounding, and more. Feedback: New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback. Privacy: This app has no ads, no in-app purchases, and does not transmit user data during operation. The app also does not contain links to other apps or to the web.

About

영 단어즙

This app offers a concentrated approach to learning English vocabulary through daily, bite-sized "juice" extractions. It uses a quiz format to help users memorize words, tracking incorrect answers for targeted review. Various visual styles and an integrated English-English dictionary enhance the learning experience.

Highlights
  • Daily vocabulary "juice" extraction
  • Quiz-based learning format
  • Tracking of incorrect words for review
  • Integrated Oxford English-English dictionary
  • Native speaker pronunciation audio
  • iCloud data synchronization
  • Customizable learning deadlines
Features
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별책에서 영 단어즙 농축액 5000mL를 앱 내 배달해 드립니다. 새로운 영 단어 학습 앱 ‘영 단어즙’입니다. 매일 꾸준히 일정량의 영 단어를 학습할 수 있도록 구성했습니다. ■단어집 아니고 단어즙 암기에는 꾸준한 학습과 반복 말고 달리 방법이 없습니다. 우리가 건강을 위해 매일 챙기는 즙에서 단어즙이라는 개념을 착안한 이유입니다. 하루 세 번 알림을 설정하고 꾸준히 착즙해 보세요 매우 기초적인 단어는 제외하고 암기할 만한 단어들로만 구성했습니다. 그야말로 농축적이고 그래서 쉽지 않습니다. ■학습 아니고 착즙 1회 분량의 단어즙에는 10mL, 곧 10 단어가 들어 있습니다. 총 500회 분량, 5000mL가 착즙을 기다리고 있습니다. 착즙은 문제 풀이 형태로 진행됩니다. 정교하게 구성된 문제를 풀면서 마지막 한 단어까지 쥐어짜 보세요. ■틀린 단어는 흘린 단어 틀린 문제는 암기하지 못한 단어, 곧 흘린 단어로 인식되어 기록됩니다. 그런 단어들은 화면 하단에 후두두 떨어집니다. 흘린 단어들로 가득한 화면을 보고 싶지 않다면 부지런히 암기해서 다시 착즙해야 합니다. ■달거나 쓰거나 바닥에 흘린 단어는 '달거나 쓰거나' 버튼을 통해 재암기 여부를 확인할 수 있습니다. 암기는 달고 미암기는 씁니다. ■즙 스타일 녹즙, 배즙, 칡즙, 포도즙, 석류즙, 브로콜리즙 스타일이 기본 제공됩니다. 그 외 원하는 스타일은 주문 생산 예정입니다. ■유통기한은 별도 표기 스스로 유통기한을 정해서 착즙에 박차를 가할 수 있도록 했습니다. 기본적으로 D-50에서 시작합니다. 유통기한이 지났다고 앱을 쓸 수 없는 것은 아니지만 경고가 발생할 수 있습니다. ■아이폰, 아이패드 동시 착즙 큰 즙, 작은 즙, 어떤 화면에서도 착즙할 수 있습니다. 착즙 데이터는 아이클라우드를 통해 실시간 동기화됩니다. ■옥스퍼드 제공 영영 사전 각 단어에는 우리말 뜻과 함께 옥스퍼드 사전에서 제공하는 영문 뜻과 용례가 수록되어 있습니다. 단어의 쓰임을 더 정확하게 파악할 수 있습니다. 원어민 음성 발음도 제공합니다. 발음을 귀에 익히면 암기도 빨라집니다. 제조사: 별책 불량품은 교환해 드립니다.

Screenshots

Column Addition4 screens
영 단어즙4 screens

Verdict

The call

The clearest difference is price: 영 단어즙 at Free against Column Addition's $3.99. 영 단어즙 also leads on rating (5.0 vs 3.0) and review sentiment (100% vs 87%). Column Addition's advantage is update cadence (every 8 months vs every 33 months). On ads, in-app purchases and device support 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

영 단어즙 is free to download; Column Addition costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

영 단어즙 holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 87% of Column Addition's written reviews are positive against 100% of 영 단어즙's.

UpkeepUpdate frequency

Column Addition ships an update every 8 months, 영 단어즙 every 33 months. The most recent releases landed on August 24, 2026 and September 17, 2026 respectively.

Scorecard7 real differences · 3 level
Column Addition versus 영 단어즙: the parameters behind the verdict, then further details
ParameterColumn Addition영 단어즙
Price$3.99Free — better
Rating3.0 (1 ratings)5.0 (3 ratings) — better
Positive reviews86.7% of reviews100.0% of reviews — better
Number of ratings13 — better
Update frequencyEvery 8 months — betterEvery 33 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.6 — better
Further details — not scored
Size15 MB20 MB
Age rating4+4+
DeveloperEsa Helttula별책

Customer experience

Column Addition

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews15 reviews
Positive86.7%
Neutral13.3%
Negative0.0%

영 단어즙

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews20 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Column Addition

No in-app purchases

None

영 단어즙

No in-app purchases

Questions

Is Column Addition free?
Column Addition costs $3.99, with no in-app purchases.
Is 영 단어즙 free?
영 단어즙 is free to download, with no in-app purchases.
Which has better reviews, Column Addition or 영 단어즙?
영 단어즙 is rated higher. Column Addition averages 3.0 out of 5 from 1 ratings, while 영 단어즙 averages 5.0 from 3 ratings.
Do Column Addition or 영 단어즙 have ads?
Neither Column Addition nor 영 단어즙 shows ads.
Which is updated more often, Column Addition or 영 단어즙?
Column Addition ships an update every 8 months, and 영 단어즙 every 33 months. Most recently, Column Addition was updated on August 24, 2026 and 영 단어즙 on September 17, 2026.

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