Download of OkaMirrorForRoku 1.1.7 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. The program lies within System Tools, more precisely Device Assistants.
This free Mac application is a product of Omi Software Studio, Inc. 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:
Oka Mirror for Roku is a screen mirroring application for Roku TV. It helps you get a smoother screencasting experience on Roku devices. With this utility, you can cast a screen and video with a subtitle from your Mac to your TCL Roku TV, Hisense Roku TV, Roku Streaming Stick, Roku Express, etc.
You may want to check out more software for Mac, such as Fire, Line 6 Edit or tn5250, which might be related to OkaMirrorForRoku.