Flowchart

About three weeks ago I had a blip entry about programming using MIT App Inventor. I didn't work all the time on it. Nevertheless I came to a status were most things worked.
And then I made some changes. I wanted to add the final update, where the app updates the number of pills in stock from the previous time I opened it, depending on when the last time was.
Well, somehow I lost the overview. And suddenly not even the basics were working correctly anymore. So I decided to do something I should have done before I start, at least that is what I learned a lifetime ago: draw a flowchart.
I selected the free tool diagrams.net and started drawing. My blip entry of today show a part of the work, from the beginning. The rectangles are procedures, shown somewhere else in the document. The diamonds are decision in the code.