HCF&LCM

HCF & LCM: Master Number Theory with Visual, Step-by-Step Calculations

Whether you're a student learning basic number theory, a teacher creating lesson materials, or anyone needing accurate HCF/LCM results, this app is your go-to tool for clear, comprehensive calculations—no more confusing manual computations!

Core Features

2 or 3 Number Calculation

Switch seamlessly between 2-number and 3-number modes with the intuitive segmented picker. Enter positive integers (e.g., 24, 36, 60) and get instant, accurate HCF and LCM results—with overflow detection for extremely large values.

Color-Coded Short Division Diagrams

Visualize the calculation process with stunning, easy-to-read short division panels:

HCF (blue highlight): Emphasizes common prime factors used in the division steps

LCM (red highlight): Highlights both common primes and the final boxed bottom numbers for full clarity

Scroll horizontally to compare HCF and LCM diagrams side-by-side and understand the key differences between the two concepts.

Detailed Step-by-Step Explanations

Don’t just get a result—understand how it’s derived:

HCF steps: Track how all input numbers are divided by common primes until no shared factors remain

LCM steps: Follow the division of any divisible number until the remaining values are pairwise co-prime

Clear plain-language notes for edge cases (e.g., "No common prime division steps → HCF = 1")

Full Factor Lists with Visual Cues

View all divisors for each input number, with:

Circled chips for common factors (HCF candidates)

Underlined chips for non-common factors

A clear summary noting the HCF as the largest circled factor—perfect for reinforcing foundational number theory knowledge.

User-Friendly Interface

Tap anywhere to dismiss the number pad keyboard for a clutter-free view

"Calculate" and "Reset" buttons for quick workflow control

Soft, modern material design with rounded cards and subtle shadows for optimal readability

Background imagery that enhances the interface without distracting from core functionality

Keyboard toolbar with a "Done" button for seamless input completion

Who Is This App For?

Students (middle school to high school) learning number theory, algebra, or basic mathematics

Teachers looking for visual aids to explain HCF/LCM concepts in the classroom

Parents helping their children with math homework

Anyone needing quick, accurate HCF/LCM calculations with transparent breakdowns

No Fluff, Just Results

This app is designed for functionality and clarity—no ads, no in-app purchases, no unnecessary permissions. Simply open the app, enter your numbers, and gain a complete understanding of HCF and LCM in seconds.

Download HCF & LCM today and take the confusion out of number theory calculations!

Notes on Alignment with Your App Code

All features mentioned are directly mapped to your SwiftUI code (2/3 number mode, color highlights, short division panels, factor chips, step-by-step explanations)

Avoids overpromising—mentions overflow detection (matching hcf64/lcm64 optional values) and valid positive integer input requirements

Maintains a tone that balances utility (for quick calculations) and educational value (for learning)—ideal for the App Store's target audience for this type of tool

Adheres to character limits with room to expand (if needed) for future updates (e.g., adding more number modes, additional tutorials)