NetCon

NetCon is an `All in One` communication app for file sharing, voice calling, and text messaging for the users connected to the same WiFi network or over a mobile hot-spot. The app is completely serverless and uses peer-to-peer connections for all its functions and works without the Internet. In addition, it is highly secure as data is transmitted in an encrypted format and stays within the users that have an ongoing connection.
To put it simply, NetCon is fast, secure, and reliable and meets all your communication needs within a Local Network.

Why use it?

At present, institutional networks (like colleges) consist of a large number of devices connected to the same wifi network, but still, use public internet for file transfer, text messaging, and phone calls requiring high bandwidth and high data consumption.
It is also widely useful for small home networks where devices connected to the same WiFi can share content without using other Internet-based communication mediums.

This app connects devices in the same network (connected to the same WiFi or mobile hotspot). Once connected, the users can transfer files of any size, voice call, and send text messages to other users without using the public Internet. Since no public internet is involved, data transfer occurs at a faster rate. Also, all the data is transferred securely in encrypted form.

How To Use?
Launch the app and enter details. You will be provided a Unique Peer Id.

Move to `Settings Tab` and turn ON `Network Discovery`.You will receive a welcoming message. This starts broadcasting your Peer Id and other info in the network so that other devices can discover and connect to you.

Move to `Connections Tab` and tap the search button. This will start searching for connections in the network and list the users. Tap on `Stop Search` after you see other users listed.

Tap on the User you want to connect to and select from any one of the 3 options - Call, Chat, or File Transfer.
It will then initiate a peer connection with the user and perform the desired action.

Please note that ‘Network Discovery` should be turned ON in the `Settings Tab` to be discoverable to peers.

You can always turn OFF network discovery in the `Settings Tab` to save battery and make yourself non-discoverable.If the `Network Discovery` settings are not working as expected, the user can reset those settings in the `Settings Tab`.

Features
Works without Internet.
Transfer files of any size at a decent speed.
High-quality voice calls.
Decentralized messaging.
Chats and Call History saved locally on the device.

Security and Privacy

The app, stores all the information on the mobile device. The user can choose to be anonymous and optionally provide an Email and Contact No. in the Login Screen.

The user can turn ON/OFF his/her discovery in the network in the `Settings Tab`. By turning ON network discovery, the user gives consent to broadcast Peer Id in the network along with other information like username, email, and contact number (if provided while login). Turning OFF discovery will stop broadcasting the information and hence making users non-discoverable. Thus, the user has complete control over the broadcast.

Other users can only connect if network discovery is turned ON. In addition to that, features like File Transfer require user permission, thus anyone in the network cannot send content without user permission. This also extends to phone calls which commence only on user approval.

All the call logs and chats are stored on the device and never transferred anywhere over the network. Received files are stored within a new folder `NetCon` within the Downloads folder.

File transfer and other communication between devices take place with the help of encrypted peer-to-peer connection between devices.