A calculator. A tip calculator. A unit converter. These are not three separate apps... this is one app, and I'm calling it Mathintosh!

Mathintosh is a powerful and fun multi-function calculator for iOS, packed to the brim with helpful features, beautiful themes, and a ton of customizations.

There are no ads whatsoever, no data collection of any kind, and the app is fast, easy-to-use, and supports many powerful iOS-native accessibility features. And all functionality is available completely free, with the only an in-app purchase for theme and icon customizations.

Four primary modes:
- simple calculator: fast, easy, and all the basics are covered
- scientific calculator: functionality of all kinds, covering every calculating need under the sun, including new Pythagorean theorem mode
- tip calculator: intuitive design gets you a tip based on your preferred percentage, now more customizable, with innovative rounding and splitting features
- unit converter: convert dozens of units across 10 modes, including a live-updating currency conversion and a unique timezone conversion

Features include:
- In-app purchase for 20 additional incredible premium themes ranging from monochrome to vibrant to retro-inspired technology, and more
- In-app purchase also include the ability to pick a custom app icon from a colorful selection of choices
- Customizable fonts, button shapes, glass v. flat v. 3D icons, and so much more
- Paper tape shows the history of all your calculations in one convenient place
- Share values across the app, from one calculator or mode to another, using a handy banner at the top of the screen
- Apple Watch app that syncs your selected theme over from the iOS app
- Widget and Control Center and Quick Actions support

Many exciting new features coming, too, that you won't want to miss!