An app launch needs two sets of creative built from one source: the assets the store review needs, and the vertical video that stops a scroll.
Store graphics built around the screenshots you already have — no new art direction needed for every feature release.
One action worth installing for, stated in the first second. Repeatable layouts for every feature announcement.
9:16 cuts that stop the scroll
Front-load the outcome in the first second, keep the caption at thumb size, and end with the store button.