Coming from a 4 years Zenfone 2 user, I fell like evolving backwards with R3Pro feature-wise.
Yes, Realme's Camera app is simple and easy to understand, and will certainly please most user. But I'm the type who appreciates more features and settings. Like many 'generic' phones today, in R3Pro there's not even option to change photo resolution. Sometimes I also use 480p video to record simple things, and video resolution option is not present in R3Pro. Luckily, anti-flicker is seems to be present (without any settings) and works well.
I got new software update just today and (I think) it adds the option to choose 30 or 60 fps in 720p or 1080p, and its awesome! Too bad I didn't have the 60fps option 2 days ago. I just went home from vacation where I record some videos using Open Camera app, I set to record in 1080p 60fps but strangely it outputs only 1080p 30fps.
AI works really well and recognizes the scene in 1 or 2 seconds. In-app editing is easy to navigate and has lots of options.