What are some good encrypted gallery android apps?

Currently using Stingle Photos. While it has a solid encryption its too basic in terms of gallery features. I just have basic single level folders currently and its very hard to manage the photos like that.

What are your suggestions for a good gallery app that is encryption/security oriented but also has good gallery features. Particularly nested folders, some sort or easy search function. If it has tagging it would be excellent.

I dont use sync or cloud features nor do I use GPhotos so such functionality does matter to me.