Download of RocketSim 12.7 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.
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. This free software for Mac OS X was originally developed by SwiftLee. The software is included in Developer Tools.
From the developer:
RocketSim helps you build apps fast. The tool allows you to compare designs, show rulers, add a grid, quick actions for recent builds. You can create recordings with touches, trim and export them into MP4 or GIF and share them anywhere using drag & drop. You can add bezels to screenshots and videos.
You may want to check out more Mac applications, such as RAGE Domainer, ModelBaker or Navicat for SQLite, which might be related to RocketSim.