The smart button is the best solution app in the Android ecosystem you can find. With the smart button, you can do like take a screenshot, lock screen, adjust volume, translate words, ...

some of the key feature : 

- variety of themes and huge store to download theme 

- Translate words without internet

- Add new clipboard to list

- show speed of internet connection on button 

- panel on the edge of the screen 

- customize panel, button in colors and sizes you like 

- adjust button position and feature like direct call, open app 

- adjust buttons action for Single-tap, Hold, Double-tap 

- stay tuned for a future version to add features like( lietner box, translate words, current date )