Stealth Transfer

Stealth Transfer for Android is encrypted device-to-device file sharing with short transfer keys. Send any file to another Stealth user with no email, no link, and no signup.

How It Works

You generate (or reuse) an 8-character alphanumeric transfer key.
The recipient enters your key in their Stealth Transfer screen.
You select files and tap Send. They upload through the Stealth transfer relay.
The recipient gets an incoming-transfer prompt and accepts or declines.
Files download to the recipient's Downloads folder or a custom location.

The transfer relay only forwards data. Transfer keys are short-lived and rotate (or persist) based on your settings.

Sending Files

Pick files from internal storage, SD card, photos, or any Storage Access Framework provider
Send entire folders with subfolders and original structure preserved
Optional message attached to the transfer that the recipient sees in the prompt
Per-transfer expiration so unaccepted files do not linger on the relay

Receiving Files

Tap Check for Files to poll the relay immediately
Background polling so you get notifications even when Stealth is not open
Auto-accept toggle for trusted senders
Choose download folder per transfer or set a default

Sharing With Other Apps

Stealth Transfer plugs into the Android Share sheet. From any app (Photos, Files, Browse, etc.) tap Share → Stealth Transfer to attach the selected items to a new outgoing transfer.

Settings

New key each session	Rotates your transfer key on every launch
Auto-accept	Skips the accept prompt for trusted environments
Notifications	System notification when a transfer arrives
Download folder	Where accepted files are saved
Background polling	Check for new transfers when the app is closed

Why Use Stealth Transfer

No file size limits. Send phone backups or video files without splitting them up.

No third-party servers. The Stealth relay only forwards encrypted blobs.

Cross-platform. Same transfer keys work between Android and Stealth on Windows.