The software allows a technician to directly enter in field information, guage pressures, temperatures, etceteras.
The tool can also communicate (receive) information directly from the Testo 556/560 directly using the Testo's IR Printer feature. The software was developed like this to capture data directly from the Testo to ensure (in certain circumstances) that technicians are not making up, or manipulating data.
The software was developed for field research and analysis, however it has taken on a new direction in the past year as more contractors and technicians have seen it's use in utility programs, which brings us back to the reason/benefit why the software can capture data from the Testo tools.
As more and more utilities start paying incentives to customers and contractors for the installation and/or improvement of their mechanical systems, they are requiring a higher standard of documentation. Several recent studies have found some contractors in certain markets have been submitting fraudulent data to earn/collect rebate monies. Some of the estimates, if prosecuted, will put away some owners in jail for some very significant periods of time. I suspect this will remain a relatively quiet affair, but utility program managers are rapidly becoming aware of the situation across the U.S. Utility managers have always required engineering firms who do evaluation studies to "data log" and analyze equipment in the field. Many of the customer sites who participate have seen the data collected by these firms, and it often contradicts what their mechanical contractors have been reporting!
What has happened, is that both the utilties and the more savvy site owners/operators are now requiring better data documentation of the servicing of equipment at their sites.
This is where and why the Testo offers so much value. Forget about the digital accuracy, the superheat and subcooling calculators; the developer (of Get-Cool) and several engineering firms saw the not-so-insignificant beneifit that the tool allows the contractor/technician to rapidy and inexpensively "data-log" equipment/system operation. Even for day-to-day use, it allows the technician to use an inexpensive and portable printer to print out measurements and some calculations on site - as real documentation of how the system is running.
The Get-Cool application was leveraged to take advantage of this ability, and basically captures the IR data stream and does a much more significant analysis of the operation of the system - and it allows the tech to save the tests for uploading to an MS-ACCESS database for additional processing if desired. More importantly, you can also recall and review saved data on the Palm, while in the field to show the customer.
What this means is you can record operational data over time (I usually "log" a unit for 20 minutes or so), and analyze it in the field (so you don't have to wait to upload the data from the tool to a laptop/desktop). This of course provides the technician to ability to show a client on site, or send them the data at a later time.
I suspect that if contractors find the software useful, and provide feedback on what they'd like to see it do, then the software will be expanded to several more portable platforms. Although no longer cutting edge, the Palm platform is inexpensive, and still has good availability so there is not much risk or cost to use it.
So the short answer is TrueTech will most likely sell the software as a stand-alone product (probably at a slightly higher price - but I do not speak for them), or as bundled with all the Testo diagnostics equipment in the link you saw. The software becomes very compelling and powerful when you take all the proper measurements with good tools, which is why I suspect TrueTech put together the bundle right out of the gate. The bundle also allows a contractor to fully and properly document all the parameters required in many utility programs - like airflow, which is largely undocumented in most systems.