Please add "Levels" interface, even if not "curves"

Which device are you using?
iPhone 13 and iPad (9th Generation)

What problem do you see this solving?
I would like to be able to set the black and white points on the iPad application which are called RGB Shadow and RGB Highlight in CaptureOne Pro.  RGB midtone is also quite useful.  In my mind these are basic adjustments needed in any photo app.   In CaptureOnePro they are recognized as a basic useful function by being given a speed-edit key.  In other posts they are often referenced with the "Curves" interface, but that is a different class, in my mind.  It seems to me the levels interface could be implemented with the same sort of interface now used for all the other basic adjustments like exposure, high dynamic range, etc.

When was the last time you were affected by this lack of functionality, or specific tool?
Every time I use CaptureOne Mobile. On basically every image I work on.  These are basic tools for me.

Are you using any workarounds or other solutions to achieve your goals?
Now what I have to do in my flow is to cull, crop, rotate on the iPad along with some basic lighting adjustments to be able to see content, then move to CaptureOne Pro and redo all the adjustments, where I usually start by setting levels (the auto-adjust feature works great there!).  If only I had these adjustments I could reserve CaptureOne Pro for only the more complicated layer based adjustments.

Are you happy to be contacted further about this suggestion or request?
Very happy to be contacted!  As I said, I think this feature is a big hole in an otherwise awesome product!  Even with this flaw I'm much more productive than before.