HI NancyatMSFT, thanks for your fast reply. Just to be clear I'm very happy of this feature I just hope that this is the first step and the fact that Sctipts are now available also on Windows I think is as step in that direction. Very Good.
What I meant was that today, if i need to develop something running on mobile (with a practical interface) whose functionality is based on data (or worst on shared data) I have to create a web page or a dedicated app and write code for data managing . There are an infinite number of "simple" application that don't worth such effort.
Some stupid examples: Manage the table reservation at restaurant from many source at the same time; Register the working hour on different projects. Prepare and test with that some operators need to fulfill. Record the feedings of a baby. In my company canteen they register the number of customers with a mechanical counter
. Some years ago I wrote a simple web page that me and my wife used to select the name of my baby (I had to use PHP, SQL, Javascript, and some sleeping hours for such a stupid purpose
)
Said more easily: a huge percentage of the apps now available can be substitute with excel running scripts, doing it better (because you can adapt a workbook to your specific needs) and without sharing your data with someone else, just need OneDrive. With this, I think that Microsoft would hit the jackpot 
I really look forward for this feature, please keep me informed.
Thanks