Simple Share APP
All you need is that both of your devices to be connected to the same network (for example to be connected to the same Wifi or Hotspot).
NO NEED OF INTERNET CONNECTION!
HOW TO USE IT?:
It's very simple, you just have to choose the sharing mode (Wifi or Hotspot) and select the files you want to share. That's all, now you can access your files from your other devices. It was made to be simple.