OTG Master

OTG Master lets you mount VeraCrypt-encrypted USB drives directly on your Android device — no root required.

Connect a VeraCrypt volume via USB OTG, enter your password, and access your encrypted files through Android's built-in Files app. Unmount safely when done.

FEATURES
• Mount VeraCrypt volumes formatted as FAT32 or exFAT
• Read and write files on mounted volumes
• Auto Mount — automatically unlocks known drives on connect using biometric authentication
• Hub support — multiple USB drives connected via a hub are all prompted in a single biometric step
• Keyfile support — use a keyfile in addition to or instead of a password
• Custom PIM — supports non-default PIM values for stronger key derivation
• Cipher selection — AES and Serpent supported
• Partitioned disks — scans MBR partition tables and lets you pick the right volume
• No root required — works on standard, unmodified Android devices
• No cloud, no tracking — your files never leave your device

REQUIREMENTS
• Android 8.0 (Oreo) or later
• USB OTG cable or adapter
• A VeraCrypt-encrypted USB drive

OTG Master is free and open source.