Groumpf for OSX 1.0 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. The file size of the latest downloadable installer is 36 KB. The program lies within Audio & Video Tools, more precisely General. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Groumpf is a simple movie player. If you don't like the interface of the QuickTime player, this is an alternative.
You may want to check out more software for Mac, such as MPlayer OSX Extended, nrf-ble-sniffer-osx or QuickShow OSX, which might be related to Groumpf for OSX.