Standard technologies are used for Android™ development, Gradle as the main build environment, Android Studio and Eclipse/ADT as development IDEs.
Blueduino Quick Text
This is a text expander app that supports macros and text snippets that you can define freely using an intuitive user interface. Since Android Lollipop (5.0 and later) the App can be configured as an accessibility service. Whenever a shortcut is typed, it can be expanded by tapping on the icon that appears next to the text. Blueduino seemlessly integrates without disturbing the user interaction on the device.
Get in contact and ask a question here or see the Blueduino FAQ for more information.