FileMate

First pointing out what this application does right, all the customization options in the settings is the first thing that stands out to me. A lot of newer applications do not feature colored skins other light and dark. You can also change the plus button location, enable different colored folders, and change the app icon. Another positive is that the video player has realtime video playback. The first con that stands out to me is that there are too many prompts. I’m okay with a first few, since it introduces the app, but after a while, I like to figure things out for myself. Second, the file viewers are pretty limited compared to other competitors. Others have features such as thumbnail filmstrips, playlists, and adjustment options. These do not. I see that the PDF viewer has more functions, including a page filmstrip, but not the others. So I think this has potential, but it’s not up there yet in my opinion.

MP4 file can play but without sound

That's awkward when displayed on the home screen !!! You can use hide in description for search optimization, still Some tweak request: 1. Allow swap to next for small videos just like the same way pictures dose 2. Hide all options about hidden when superhide is enable. Now there is still some options talking about hidden 3. Shake to hide should jump out of all hidden directories, instead of just showing nothing but still in a hidden directory 4. Should auto-hide everything hidden, if the app is reopen after staying in background for a long time. Your app can stay in background for a very long time without being killed like one night ....