iPhone Calculator App

iPhone Calculator

Designed for Clarity and Ease,
a Simple Vertical-Flow Calculator App

No tabs. No unnecessary switches. Just the essentials, from top to bottom.
Up to 200 history items, one-tap copy, and flexible customization — all in one clean layout.

Up to 200 History Items One-Tap Copy English / Japanese Theme & Background Reset (History / Settings)

Calculator

• Keys: 0–9/00, decimal point, four operations, sign change, CE/AC, equals
• Display: Thousand separators and automatic conversion of scientific notation to standard numbers
• Fits long numbers: Auto-adjust font size up to 3 lines
• Top line always shows (Previous Value + Operator + Current Value)

Example: 12,345 ÷ 1.5 stays readable with separators and adaptive text size.

History

• Up to 200 recent calculations saved (kept after restart)
• Toggle history display from the header
• Actions: Tap to reuse, Long press to copy, Swipe to delete, Clear All button
• If over 3 lines, the area expands automatically with scrolling

Quickly recall and reuse frequent calculations. Copy or delete with a single action.

Copy

Copy the currently displayed value to the clipboard with a single tap, ready to paste into any other app.

Settings

• Language: English / Japanese
• Theme: Choose key colors
• Background: Choose an image / none
• Reset: Clear history and settings

Customize the look and feel to match your preference. Reset anytime for a fresh start.

Design / Usability

• Subtle glass-like cards on a dark theme
• Responsive keypad and clear toast messages
• Mobile-optimized spacing for easy one-handed use

Minimal visuals and clear information flow reduce cognitive load.

© 2025 Calculator App — Tab-Free, Scroll-Down Simplicity