Cryptomator Mod creates encrypted vaults to protect cloud-stored files, giving users a way to assign a password without creating an additional account or completing complicated configuration. The app supports vaults stored with services such as Dropbox, Google Drive, OneDrive, and WebDAV-based providers, while local Android storage can also be used with third-party sync apps.
Creating and unlocking a vault
The main workflow centers on creating a vault and setting its password. Once a vault exists, users can access it through the app using that password. On Android devices with a supported fingerprint sensor, fingerprint unlocking is also available. Vaults are automatically locked when the app is sent to the background, adding a documented lock behavior to the vault workflow.
Protecting cloud and synced files
Cryptomator Mod encrypts file content and filenames with AES using a 256-bit key length. The vault password is protected with a script described as providing enhanced resistance to brute-force attempts. Because vaults can be placed in local storage, they can also be used with third-party sync applications rather than being limited to the listed cloud storage services. The source states that vaults can be accessed on mobile devices and computers.
Transparency and practical maintenance
The software is described as open source, so its code is visible for review. It received the CeBIT Innovation Award 2016 for Usable Security and Privacy. For ongoing vault management, the supplied guidance recommends choosing a strong, unique password, regularly backing up encrypted vaults, and keeping the app updated for security patches and improvements. These practices support the protection workflow but do not replace the need to remember the vault password or maintain usable backups.