PinMEMO 1.1 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. We recommend checking the downloaded files with any free antivirus. PinMEMO for Mac lies within Lifestyle Tools, more precisely Bookkeeping & Cataloging. This free software for Mac OS X is an intellectual property of Marko Sabotin.
From the developer:
PinMEMO is an application that memorizes your PIN codes. With the help of Phonetic Number System, PinMEMO helps you find substitute words which represent specific number. The Phonetic Number System is a substitute alphabet for mapping digits to characters. PinMEMO works up to maximum 100-digit number.
You may want to check out more software for Mac, such as iMedia or TuneTags, which might be related to PinMEMO.