This is a modified Schaff Trend Cycle (STC), which is designed to provide quicker entries and exits.
I've been a huge fan of the STC for a long time, but being based on the MACD means its signals often lag by a bar or two (especially in fast moving markets). All I've done here is take the base STC script (all credit to user LazyBear), and change the source to a modified CCI.
The CCI Cycle provides more timely entries and exits, often by 1-2 bars. The flip side of the increased responsiveness is a prevalence for more false signals (a perfect example is the 17th August on the above chart). It's the nature of the beast! Still, I've been using this for a few months now and it's (in my opinion) an upgrade on the standard STC.
As always, you will need to pair this with another indicator or method of technical analysis to provide a trade bias, as the CCI Cycle (and STC) aren't designed to trade every signal. In my experience, either divergence identification, or using one or more moving averages works particularly well.
The indicator is also MTF capable, so you can get some interesting results from that.