With just this app combined with the web version you can transfer files and messages across platforms within a local network.
First open the app. On other devices open a browser and go to wlantool.com to select the current network or enter the phone's local IP with port 8888 (for example 192.168.1.103:8888). If there is no network you can create a hotspot have other devices connect to it and then enter the hotspot's IP with port 8888 in the browser to send files and messages to each other.
This app also has features like a walkie-talkie audio and video calls and a local cloud. By entering the phone's local IP with port 8888 and the path 'explorer' in a browser (for example 192.168.1.43:8888/explorer) you can view images and documents on your phone online and play audio and video files. For unsupported audio and video formats you can use a third-party player (for example installing VLC player allows you to play rmvb videos).