Scientific Calculator for iOS and macOS

I&#x27;ve been working since about 2016 to try and make the best calculator app. There are many apps that have fantastic UIs, and many apps that have a wide breadth of features - but very few that do both. My aim since the start has been to do both.<p>The input follows regular maths notation, and a cursor lets you go back and edit previous parts. Typing follows iOS&#x27;s keyboard pattern. You get most of the buttons on one screen, and you can press and hold on buttons to bring up menus for more advanced buttons - like pressing and holding on sin will give you asin, sinh, asinh etc.<p>It&#x27;s grown a lot since the beginning, now including graphing, unit conversion (including maths on units), date maths, and solvers.<p>The app itself is written in React Native, and the core engine is also open source (<a href="https:&#x2F;&#x2F;github.com&#x2F;jacobp100&#x2F;technicalc-core">https:&#x2F;&#x2F;github.com&#x2F;jacobp100&#x2F;technicalc-core</a>)<p>Happy to hear everyone&#x27;s thoughts!