I fixed many problems (which I discovered eventually) on my OS and developed the apps: bookmarker app - I added a search feature, and an edit feature to edit past notes. I also developed the calculator by changing the order of the numbers - i don’t know why I hadn’t already because the numbers were descending from 9 strangely, but… and I also added a percentage and negative/positive number function. In the settings app, I made the window colour editable as an appearance option. I want to add a few more apps, now that I have gotten the hang of creating and developing them but I hope I get it finished before Stardance challenge finishes ><