Columny

Columny is an educational app designed to help children and students practice written calculations in a clear and structured way.

The app focuses on column-based arithmetic and allows users to train:
• addition
• subtraction
• multiplication
• long division

Columny guides users step by step, just like solving problems in a notebook. Each entered digit is checked immediately, helping students understand mistakes and learn correct procedures.

Key features:
• Unlimited automatically generated problems
• Step-by-step support for multiplication and long division
• Instant feedback for every entered number
• Custom problem input
• Works fully offline
• Designed for both iPhone and iPad
• Clean interface focused on learning

Columny is ideal for school practice, homework, and independent learning.