Memmy is a React/Expo app so it's cross platform as well, the dev just hasn't configured an Android build pipeline for it. Both have the same janky scrolling issues which is common across React apps.
well it's a React app (booo), so all the author (or anyone willing to make a PR) needs to do is update the build pipeline to compile an APK and create a GitHub release for it if they don't want a Play Store presence.
I'd hope the actual app doesn't look like the screenshots... doesn't give a good first impression of attention to detail when the app preview in the screenshots are quite visibly squashed to fit the vertical height of the device frame they've placed them in to.
heh, working as intended then.