This is the best file manager Ive used for iOS. For me, only Zen Viewer could have competed with this--but even that has since been discontinued. Even though this app is free, it has a lot of care put into it.
I only have 2 issues with this app:
First, Ive upgraded from the 2nd gen iPad => Air 2 => iPad Pro 10.5 and I use this app primarily to look at images. The resolution has been getting better and better and my images have been getting smaller and smaller. Itd be nice if there was a checkbox in the settings to allow pictures to auto-zoom/scale to fit the nearest width/height (keeping its proportion). I hate having to zoom in after every one pic. The image seems to still look fairly sharp while blown up slightly.
Lastly, Im not very fond of the image carousel or whatever it is. The old way worked fine. If they want to implement a new way to navigate through the images, they should just add it as an option and make it the default. I dont like that I cant go back to the old one. I feel the old way was far faster/smoother to scrub through the images. This new version loads the images and they look fuzzy the first few moments you run through each image... and if you take too long, it locks down on the image and you cant move to the next image for a short while. It feels a bit unrefined and clumsy to use.
That being said, its still great. If the images were auto-zoomed, I would give this app 5 stars.
Hissatsu about Documents: File Manager & Docs, v6.0.2