In this project I used Firebase as the server and for frontend, I used android xml.

• The app is designed to accomodate almost all screen sizes in mobile and tablet devices.
  
  
• It has a persistent server which means even if you lose network, whenever the internet connection is live again it will receive and send message automatically.
• Chats are stored on the local database using Android and SQLite.

sequenceDiagram
    Alice->>+John: Hello John, how are you?
    Alice->>+John: John, can you hear me?
    John-->>-Alice: Hi Alice, I can hear you!
    John-->>-Alice: I feel great!

• Server only holds the message as long as the receiver is offline.
  
  
• Messages sent to server are encrypted on the client device first and then decoded on the receiver device.

flowchart TD;
    A[Sender App] -->|Message| B(Encoder);
    B --> |Encoded Message| C{Server};
    C -->|Encoded Message| D[Receiver App];
    D --> |Encoded Message| E(Decoder);
    E --> |Decoded Message| F(Receiver);

The app is easy-to-use and user-friendly. Everything is labeled and easy to access.

The app is under development.

• Log in and Sign up.
  
  

• Profiles Screen comes first after loading screen once you have logged in.
  
  

• You can click on the user profile card to interact with the user.
  

• Heart icon represents Favourite selection, you can mark any user as Favourite and it will show in your Favourite tab which you can access from your dashboard.
  
  

• Chat Dialog icon will let you chat to the other user and also that user will be shown in your chat tab which can be accessed from the dasboard.
  
  

• These are Account Options here you can edit your profile, logout and upload photos to the server.
  
  

• By clicking on Edit Profile option you can edit your profile.
  
  

• For Example we will first turn the swith on and then click on the field you want to edit.
  
  

• Another example where we will edit the Profession field.
  
  

• Chat List and Conversation UI.
  

• Tablet user.
  
  

• Forgot Password? and exit screen UI Flow.
  

Some features are under development. 📢 PSA for those who want to fork or copy this repo and use it for their own site:

Please be a decent person and give me proper credit by linking back to my website! Refer to this handy quora post if you're not sure.