Download of TapNTempo 2.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This software for Mac OS X is a product of Jnote.org. The application lies within Audio & Video Tools, more precisely Music Production. 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:
TapNTempo is a fully featured metronome that offers customizable sounds, real-time tempo tapping, beat and division capabilities. TapNTempo’s easy-to-use interface includes the best of the traditional metronome, but feature bloating is avoided in favor of simplicity.
You may want to check out more software for Mac, such as Resound, SoundByte or Lounge Lizard Session, which might be similar to TapNTempo.