Don't be confused by the name - Numerology has nothing to do with predicting the future from numbers and birth dates.
Numerology is all about producing great music as a modular sequencing and audio plugin environment for Macs. I'm no sequencing expert but it's obvious from the start that Numerology is a highly polished and professional piece of software that would usually go for at least twice the price. Note that as a result of it's professionalism, it's also highly complex and difficult to grasp.
Numerology is however fully supported with detailed documentation and tutorials and if you manage to build a few sequences, you'll probably soon get the hang of it. Those that use the program regularly praise the ability in Numerology to save step-sequencer configurations and multiple presets means which means you don't have to start from scratch every time you make a new one.
If you're an audio mixing professional, using Numerology will allow you to come up with unique modular sequences that would normally only be possible on expensive commercial apps.