The app now runs in 7 languages: English, French, Italian, German, Romanian, Russian, and Ukrainian. You can freely change the language while using the application.

The app implements sound effects and animation. It also improves the appearance of some views.

Added 8 new pictures.

1. The app contains two new pictures. 2. It also shows colored pictures.

The first version of this application (iPhone targeted) was created using Objective-C language and published on AppStore in April 2013. The recent version is an Universal application and was developed using Swift programming language and SwiftUI Framework.

1. In Tasks View I added an “Intelligent Keyboard” (IK). The default keyboard used in previous version occupied too much space and hided part of the coordinate plane. The IK will accept maximum 2 characters and will check syntax. For example it will accept 0, 1, 2, 3, -1, but will reject 1-,10, 11, -12. Users can insert and remove characters. 2. App contains one new tab bar item: Results. It will show student achievements: how many correct and wrong answers student had in Tasks View or Pictures View, the progress percentage separately and in total. Teachers or parents can use this results to appreciate the student progress in learning Coordinate System.

Version 1.0 was created in 2013. Because now we have many iPhone sizes I have updated my app to support them.