OnionDrop lets you send and receive files through temporary Tor onion links directly from your Android device. Tor and the transfer server run on the phone. No cloud account, external OnionDrop server, Umbrel installation or Orbot installation is required. Features include private send and receive links, QR codes, SHA-256 checksums, local file storage, export through Android's document picker and automatically expiring 30-minute sessions. OnionDrop contains no advertising or analytics SDKs. The source code is licensed under GPL-3.0-or-later.