Hi there! I'm Sergey Solovyev, software developer from St Petersburg, Russia and i'm glad to present here my application called Calculator++. Description Calculator++ is an advanced, modern and easy to use scientific calculator #1. Calculator++ is all you need - it helps you to do basic and advanced calculations on your mobile device. Calculator++ is the modern calculator for everyone: scientists, accountants, students. Application is free and without adds! Features ++ easy to use + no need to press equals button anymore - result is calculated on fly + smart cursor positioning + several kinds of brackets + copy/paste in one button + landscape/portrait orientations ++ drag buttons up or down to use special functions, operators etc ++ modern interface with possibility to choose themes (currently 3 themes available) + highlighting of expressions + history with all previous calculations and undo/redo buttons ++ variables and constants support (build-in and user defined) ++ complex number computations + support for lots of functions: sin, sinh, asin, asinh, ln, sqrt etc ++ expression simplification: use 'identical to' sign (≡ to simplify current expression (2/3+5/9≡11/9, √(8)≡2√(2)) + support for android 1.6 and higher + open source + Russian and English interfaces NOTE 1: 1. To use functions written on the button above and below the middle text (e.g.: sin, cos, and other) push the button and drag up or down lightly. 2. Long click to edit/remove variable, short click - to use 3. Click to use memory record 4. Click on calculators result to copy I will try to keep this thread up to date but you can always can find the latest version on android.market or on my personal web page. Hope you enjoy the app!