Flash vs 결이 주산

Train your mental arithmetic with numbers that flash one at a time. Watch the sequence, add it in your head, and enter the total before the next round. Flash keeps practice simple: • Choose 1–7 digits and 2–500 numbers. • Set the display speed from 0.1 to 3.0 seconds. • Practice 1–999 rounds or keep going in Infinite mode. • Turn answer input and automatic continuation on or off. • Choose a light or blue background. • Use sound, haptic, or both for feedback. • Save your favorite settings as presets. • Check accuracy, response time, streaks, and total training time. • Review the exact number sequence for each round and retry mistakes. Use it for a quick session or a longer challenge. Flash gives you a clear way to practice at your own pace. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

결이 주산은 귀여운 강아지 캐릭터 결이와 함께 주산을 배워보는 교육용 앱입니다. 요즘은 실제 주판을 접하기가 쉽지 않습니다. 그래서 핸드폰 속에서 언제든 사용할 수 있는 휴대용 주판을 구현해보았습니다. 8열 주판을 직접 움직이며 제시된 목표 숫자를 만들어보는 방식으로, 숫자의 자리값과 수 감각을 자연스럽게 익힐 수 있습니다. 각 자리의 주판알을 움직이면 현재 값이 바로 표시되어, 숫자가 어떻게 구성되는지 눈으로 확인하며 배울 수 있습니다. 주요 기능 - 8열 주판 조작 - 목표 숫자 만들기 문제 - 현재 값 실시간 표시 - 주판알 색상 변경 - 프로필 사진 설정 - 배경음악 켜기/끄기 - 귀여운 결이 캐릭터와 함께하는 학습 화면 결이 주산은 복잡한 설명보다 직접 만지고 움직이며 배우는 경험에 초점을 맞춘 앱입니다. 아이들은 놀이처럼 주판을 조작하며 숫자와 친해질 수 있고, 가족은 함께 문제를 풀며 즐거운 학습 시간을 만들 수 있습니다. 귀여운 결이와 함께 오늘부터 주산을 시작해보세요. Gyeol Abacus is a portable abacus app featuring Gyeol, a cute puppy character. Today, it is not always easy to find or carry a physical abacus. This app was created after my mother asked for a simple abacus that could be used anytime on a phone. With the 8-column abacus, users can move the beads directly and naturally learn place value and number sense. As the beads move, the current value is displayed in real time, helping users see how each number is formed. Users can also tap the unit number below each column to clear only that column’s beads. For example, after counting the ones place and carrying over to the tens place, users can reset only the ones column back to zero, just like using a real abacus. Main Features - 8-column portable abacus - Real-time current value display - Clear beads by each place value - Practice making target numbers - Change bead colors - Set a profile photo - Turn background music on/off - Learning screen with the cute puppy character Gyeol Gyeol Abacus is designed mainly as a simple digital abacus rather than a game. Children can become familiar with numbers by moving the beads like play, and families can enjoy learning together by making numbers on the abacus. Start learning abacus today with cute Gyeol.