calculator DUO vs EnterCalc

A scientific calculator with history, memory and a keypad made for one hand. Save useful answers and tap to use them again on iPhone and iPad. WITHIN THUMB REACH Move and resize the left- or right-hand keypad to suit your grip. KEEP THE ANSWERS YOU NEED Save useful results on a visual shelf. Tap to reuse them, recall your last answer, or search your calculation history and mark favorites. CORRECT INPUT WITH CONFIDENCE Swipe to delete a digit or function. The deleted content stays visible until your next input; tap the return button to undo the deletion. FROM EVERYDAY TO SCIENTIFIC Use arithmetic, percentages, powers, roots, logarithms and trigonometric functions. Long-press a result for a large display, with adjustable text, color, font and size. MAKE IT YOURS Five themes, optional digit grouping and an interface in 50 languages. No account is required. Expressions, saved results and calculation history are stored on your device. DATES AND TIME, TOO Find the time between two dates, add or subtract days and hours, and calculate across time zones. The free app may show banner ads. Remove Ads is an optional one-time purchase, with purchase restoration through the same Apple Account.

You enter calculations, EnterCalc returns results. EnterCalc is a native calculator for iPhone and iPad. Whether you're at your desk or on the go, EnterCalc focuses on simplicity, intuitive quality-of-life improvements, and easy multitasking. It delivers a familiar calculator experience while adding thoughtful features that make everyday calculations fast and easy. Available for both iOS and MacOS. Features: • Open multiple calculator panels with independent calculations and settings • Calculation history with quick reuse of previous results • Customizable function keys for your preferred actions • Advanced copy, paste, undo, and redo support • One-click copying for fast workflows • Preserve calculation context when copying and pasting • Digit-level editing for quick corrections • Currency mode with built-in VAT and TIP calc tools • Hardware keyboard and shortcut support • Landscape mode support • Optional scientific notation • Configurable rounding behavior • Multiple number formatting styles • Multiple language and localization options • Support for alternative keyboard layouts • Light and Dark Mode support • Optional tactile and audio feedback on supported devices • Accessibility-focused design • Lightweight and distraction-free • Privacy-focused, operates entirely on your device with no tracking or analytics • Open source under the MIT License