Where I can seek for UI/UX design input for iOS app?

Currently, I'm in the middle of porting of an Android app (https://play.google.com/store/apps/details?id=com.yocto.wenote)

Based on users feedback, there are few designs they truly love than similar product in the market.

• Tab navigation design
• Hamburger menu

Right now, I'm getting started to port the Android app to iOS app. I wish to bring the equivalent UX experience in Android, to iOS app. I know it is wrong, to do a direct 1-to-1 porting, as iOS users have different taste/ expectation than Android users.

However, I'm pretty new to iOS ecosystem, and lack of general sense on what is the likes/dislikes of iOS users.

I would like to seek for UI/UX design input, regarding my ported iOS app.

May I know, what are some proper online channel I can, to look for iOS UI/UX design advice input?

Thanks.