Razer's photo app does pretty good, minus not having slow motion, beating all my previous phones in clarity, quality and ability to take photos of an always moving 2 year old with very minimal, if any, motion blur, and in low light without flash and no visible grainyness. But to boost your cameras performance, Gcam works wonders (slow motion still does not work) Beware of file sizes of videos, though... An 8 minute 4k video of my daughter was a whopping 2.5gb... and when you take photos at the same time you're recording, they come out much darker than just taking a photo by itself. Photo quality is outstanding, taking bright, clear photos in low light with no motion blur what so ever, and with no visible grainyness or loss of color accuracy. People with high end iPhones and Samsung devices were amazed at the photo quality of the Razer 2 compared to their phones...so a big plus for this phone. I have NO idea what people we're talking about when they said the camera was crap... As far as the photo album app, I think the one that comes with the phone totally sucks, it's the Google albums app, which for me is over complicated, I have no idea how to browse it, or organize it, or create folders, or move them to folders...so, I downloaded a very simple, easy to use gallery app that fits all my needs. VERY simple to understand, I can move things around, create new folders, etc. If you're interested in it, here's the link.
https://play.google.com/store/apps/details?id=com.simplemobiletools.gallery.pro
It reminds me of the simpler album apps that came with earlier versions of Android Galaxy phones, which is what I'm used to.
EDIT- 10/16/19
Finally found a camera app that makes full use of the camera. Gcam
Version 6.2.030. greatly increased clarity, amazing low light performance, night mode, multiple resolutions to choose from, hdr, hdr+, 4k video, bokke effect in portrait mode, which makes a HUGE improvement in photo dramatic effect when taking pictures of people, and most importantly, to me at least, VERIFIED WORKING SLOW MOTION AND TIME LAPSE... Which for some STUPID REASON Razer has OMITTED from even their latest software update, posted only a couple days ago. Link below for the gcam mod.
https://drive.google.com/file/d/1rAgBKJ9ZixrsfP2_29HHJabm-2g9etLY/view?usp=drivesdk
I cannot recommend you use this gcam mod enough! It's EXACTLY what this phone was missing all along
Not my work, BTW. Simply pointing a link at someone else's work.