Clear what data and where?
It’s not what I’m talking about.
In my first post I reported the startup speed as being “from icon-tap to fully rendering the Lovelace UI”. That means from the moment I tap the app’s icon to the moment the Lovelace UI is fully rendered it takes 8 seconds on my phone (compared to 3 with HA Client).
During those 8 seconds, it begins with a white background, then it momentarily displays the blue background of the top menu, then that quickly disappears and is replaced with a white background and the logo with “Loading Data” (that’s about 3-4 seconds into the sequence), that disappears quickly and then shows just the white background (and a spinning indicator), then the Lovelace cards are promptly rendered, and finally (a split-second later) the badges.
I’ve just performed that operation about 5 times in a row and the startup is now a smidgen faster at 7 seconds (but nowhere near 3).