Download of iris-mini 3.7.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally produced by Daniel Georgiev. The application lies within Productivity Tools, more precisely Timekeeping. We recommend checking the downloaded files with any free antivirus.
From the developer:
iris-mini is a software program for eye protection, health, and productivity. If enabling the automatic mode, the color temperature will be 6500K and the brightness 100% during the day and at night the values will change to 3400K and 80% brightness. The manual mode uses 3400K and 80% brightness all the time. When Iris is paused, it does not apply color changes.
You may want to check out more software for Mac, such as iAlarm or Chronos, which might be similar to iris-mini.