Kodular - Much more than a modern app creator without coding
Bixbi Button Remapper - Bixbi Button Remapper – bxActions is an exciting tool for Android users that lets you easily remap the Bixby button to any action or app you like.
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Tapping - Tapping – Auto Clicker is a free-to-use Android app that helps you automatically tapping on your phone anywhere you set on the screen.
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
Conscient - Conscient – Context Aware app is a simple yet powerful automation application that lets you launch certain applications whenever certain conditions are met.