CryptoFlow 3.0.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
CryptoFlow has extended the complete end to end encryption of sensitive data traffic to now include your Mac.
CryptoFlow works in conjunction with Certes CryptoFlow App Creator software (required) to offer simple, point-and-click encryption of data traffic for enterprise applications across any network. CryptoFlow enables enterprises to extend strong, consistent encryption to mobile end-points, including smartphones and tablets.