Although I use my network alone, but I have clicked on "Settings" and set a password - a matter of principle. It took less than 5 seconds.
Now one enters the formerly mentioned address in the Web browser, and then his password and has access to a web-based file manager. By everyone should get along immediately. On the left is the famous "tree menu" and on the right the files of the displayed folder. Additionally information on the wireless signal, the battery level and memory usage are displayed.
Best is that you can access (an SD card, for example) on the internal memory, but also to the external. Since one in the root filesystem (/), so starts the internal memory, one finds mnt the external memory in the folder, as you would expect from Linux operating systems.
Without problems can be one or more files to download and even upload. Create directories will also work.
Since the whole thing is very fast, I'd spend it up to 10 euros, if I did not get it today because of the Amazon campaign free.
This app is an absolute buy recommendation, if you like it easy!