Your logo shows up in more places inside a Subsplash app than most people realize. The app header. Notification icons. The launch screen. Loading states. Empty state graphics. And each of those places has a different background that your logo has to survive against.
A multi color logo is the common trap. It looks great on your website against white, disappears against the dark app header, and gets muddy on a colored splash screen. If any part of your logo needs the background to be a specific color to read, it will fail somewhere in the app.
Prepare a solid single color PNG version. White for dark backgrounds is the workhorse. Add a black version for light backgrounds. Both should have transparent backgrounds so they sit cleanly on whatever the app puts behind them.
Test both by dropping them into the app header preview and any custom List headers you have. If either version reads clearly on both the dark and light surfaces you use, ship them. If not, adjust and retest.
Branding is only branding if members can actually see it. Two clean PNGs beat one fancy logo every time inside an app.