Comparison

Byeoldosa vs SayScan

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

Head to head
About

Byeoldosa

This app offers step-by-step practice for basic arithmetic operations like addition, subtraction, multiplication, and division. It features levels organized by difficulty, from single-digit to three-digit numbers, with a vertical calculation mode that mimics writing sums on paper. Progress is automatically saved and visualized in charts to track speed and accuracy improvements.

Highlights
  • Step-by-step arithmetic practice
  • Addition, subtraction, multiplication, division
  • Difficulty levels
  • Vertical (column) calculation mode
  • Automatic practice set saving
  • Progress charts for speed and accuracy
Features
Read full description

Byeoldosa is an arithmetic practice app for working through addition, subtraction, multiplication, and division step by step. • Levels are organised by difficulty, so you can start from the basics and move on to more advanced problems at your own pace. • Problems range from single-digit to three-digit numbers, with stages that change depending on whether carrying or borrowing is involved. • In vertical (column) calculation mode, you can follow each column one box at a time, much like writing out the sum on paper. • Every practice set is saved automatically, and your scores and time spent are shown in simple charts, so you can see how your speed and accuracy change as you keep practising. It’s a good fit for students who want to strengthen their arithmetic, for anyone who’d like a bit of mental exercise, or for those moments when you just feel like doing a few number problems. Whenever you feel like practising numbers, just open Byeoldosa.

About

SayScan

Features
Read full description

찍고 바로 들려줘요 아이 너무 많이 책 읽어 달라는 아이 책 읽기,  영어 책 읽기,  바쁜 하루,  작은 글씨 읽기 힘들 때 SayScan이 대신 읽어드려요. 카메라로 찍으면 텍스트를 즉시 또렷한 음성으로 재생!  아이폰용 프리미엄(고품질) 음성도 지원해서 자연스럽고 선명하게 들을 수 있어요. 다양한 영어발음 지원 미국,영국,호주,인도, 남아프리카 발음 등등 지원. 이런 분께 좋아요 어린이 영어교제 읽어 달라는 아이, 바쁠때 이 앱으로 혼자 읽게해요. 알림장/가정통신문/숙제 안내를 빠르게 확인하고 싶은 학부모 영수증·전단지·포장 뒷면 성분표 등 작은 글씨가 불편한 분 외국어 안내문을 찍고 듣고 주요 기능 카메라 스캔 + 즉시 음성 재생: 찍자마자 읽어줘요 프리미엄 음성 지원: 고품질 목소리로 자연스럽게 (iOS 설정에서 다운로드 안내) 목소리/언어 선택: 국가/언어별 음성 선택, 깔끔한 필터링 속도 조절 슬라이더: 속도조절 오프라인 재생: 다운로드한 음성은 네트워크 없이도 또렷하게 OCR 텍스트 인식: 정확하게 추출해 문장 단위로 읽어줘요 사용법 앱을 열고 촬영 버튼을 눌러 문서를 찍어요. 자동으로 텍스트를 인식하고 바로 읽기 시작! 속도/목소리는 상단 컨트롤에서 언제든 변경할 수 있어요. 고품질 음성을 원하시면 앱에서 안내에 따라 iOS 설정에서 설치하세요. 함께 만드는 세이스캔 여러분의 의견을 앱에 반영합니다. 앱에 별점 남기고, 리뷰에 “원하는 기능/아쉬운 점”을 적어주세요. (원하실 경우 한정) 리뷰에 **‘뽕뿅이 엄마or아빠 버튼추가’**라고 적어주시면, 해당 기능 화면에 원하시는 이름을 (작게) 표기해 드립니다. 예) 하린맘, 주호아빠

Screenshots

Byeoldosa4 screens
SayScan3 screens

Verdict

The call

Byeoldosa and SayScan are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Byeoldosa versus SayScan: the parameters behind the verdict, then further details
ParameterByeoldosaSayScan
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.6 — better
Further details — not scored
Size10 MB2 MB
Age rating4+4+
DeveloperHyekyung JeongPassionEx

In-app purchases

None

Byeoldosa

No in-app purchases

None

SayScan

No in-app purchases

Questions

Is Byeoldosa free?
Byeoldosa is free to download, with no in-app purchases.
Is SayScan free?
SayScan is free to download, with no in-app purchases.
Do Byeoldosa or SayScan have ads?
Neither Byeoldosa nor SayScan shows ads.

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