Startup Idea: Keyboard/Keypad App with Dedicated Save Button for Scriptwriters

Startup idea to develop a keyboard app with a dedicated 'save' button. This app can be used by scriptwriters or anyone who work on scripts/plays/conceptual content. Users can save their work instantly during their workflow without the need to move hands or interactions that could disrupt their writing process.

I am a script writer for a local theater and many times when i am asked to change the script for plays to make them child-friendly, i use an app on my computer or phone. It can be very annoying when i accidentally delete all my work or forget to save my project and when i move my mouse to save the project so something bad doesn't happen to it, it ruins my flow. I wish there could be a solution to it so that i could press a button on my phone keypad or keyboard and it will all save instantly so i can keep typing without moving my hands away from the keyboard. I think the solution could be a keyboard with a save button on it, or a keypad app which consists of the normal phone keypad but with a save button right on it. I have looked up solutions to my problem, i tryed to find word document keyboards (keyboards specially made with macros and buttons for word documents) i found nothing. I also looked up "save button, pages keyboard, and custom keyboard" in the app store on my i-phone 6, i found nothing. I still have no solution to my problem.