The hack they are talking about is not to change the settings on the machine, but to let patients look at the data the machine collects in order to understand their condition better. Separately, there is a web forum community that discusses how to change machine settings based on those insights, but you don't need to use SleepyHead to change the settings.
> Most modern CPAP machines create reams of data while they’re being used. They track things like average air pressure, AHI, average use per night, mask leak rates, “flow limitation index,” and other statistics about what the machine is doing and the patient’s sleep quality. Generally, the data is stored on an SD card, which a patient takes to their doctor once every six months (some new devices also transmit data wirelessly to an app; the data available on apps, patients told me, is rarely as thorough as what the machine is actually collecting.)
> Most modern CPAP machines create reams of data while they’re being used. They track things like average air pressure, AHI, average use per night, mask leak rates, “flow limitation index,” and other statistics about what the machine is doing and the patient’s sleep quality. Generally, the data is stored on an SD card, which a patient takes to their doctor once every six months (some new devices also transmit data wirelessly to an app; the data available on apps, patients told me, is rarely as thorough as what the machine is actually collecting.)