I do not know what "bake an app" means. Did you get from my comment that I wanted to share some cooking advice?
I think that you are probably referring to my sentence that "I used to backed up" some of the apps. The combination of my speed typing and English language incompetence helped me to create a new form of past tense of the verb "to back up smth".
With your "bake an app" and my "used to backed up" we should definitely get together and offer linguistic consultations and proofreading to anyone commenting on this forum.
Merry Christmas and Happy New York:-)