Ventoid is an Android utility for preparing Ventoy-style USB drives directly from a phone. It is built for users who want a clean, open-source path to writing a multi-ISO boot USB without using a desktop app for every change. What Ventoid does: - Detects supported USB mass-storage devices connected over OTG - Requests Android USB permission only when needed - Writes a Ventoy-compatible MBR layout - Writes the Ventoy boot core and EFI image - Formats the main data partition as exFAT - Shows a clear install progress view and local write log Why it is useful: - No root required - No ads - No account - No analytics - No cloud dependency Important: - Ventoid writes directly to the selected USB drive, so choosing the correct target device matters - A working OTG adapter or powered hub is required for actual USB writing - Device compatibility can vary depending on the phone, cable, USB bridge, and flash drive controller Ventoid is intended for advanced users, repair kits, travel setups, and people who want a portable boot-media workflow from Android.