New versions of Floating Calculator and Floating Calculator Free are available on Google Play.
In this version:
Indication of the last operation in the notification. Also notification is now permanent. You should use exit menu option of the calculator to hide the notification.
Thousands separator is used to distinguish groups of digits on the display.
Improved "Paste" functionality in the full version. Now the program searches for all the decimal numbers in the clipboard and allows the user to choose one of them if any.
Support for Android 6.0 Marshmallow. Application will requests the permission for drawing over other apps at first launch.