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Your first transfer

CrocApp's home screen has two buttons: Send and Receive. Everything else follows from a three-step flow:

  1. The sender picks files, a folder, or a snippet of text.
  2. CrocApp generates a code phrase. Speak it, message it, or show it as a QR code.
  3. The receiver enters the phrase, sees the file list, and accepts.

Both sides run PAKE over the code phrase to derive a session key, so the phrase never crosses the network in the clear and the relay never learns it. Files are encrypted with the code phrase; the relay only ever sees ciphertext. Same Wi-Fi or different continents, CrocApp finds the fastest path automatically.

Sending​

  1. From the home screen, tap or click Send.
  2. Under What to send, pick Files or Text.
    • For files: use Add Files or Add Folder, or drag files onto the drop area (macOS).
    • For text: type or paste into the text box.
  3. Optionally set a Custom code (at least 6 characters) instead of a generated one.
  4. Tap Send.
  5. CrocApp shows Ready to send with the code phrase, a Copy Code button, and a QR code. Share the code with the receiver over a channel you trust.
  6. Once the receiver connects and accepts, the transfer starts. When it finishes, CrocApp shows Transfer complete.

Receiving​

  1. From the home screen, tap or click Receive.
  2. Enter the Code phrase the sender gave you, paste it, or (on iOS) tap Scan QR Code.
  3. Check the destination folder shown below the code field; change it with Change if needed.
  4. Tap Receive.
  5. CrocApp shows Incoming transfer with the file list and total size. Review it, then tap Accept or Decline.
  6. When the transfer finishes, CrocApp shows Transfer complete with a button to open the destination folder (Open in Files on iOS, Show in Finder on macOS).

For the full detail on each step, see Sending files and Receiving files.