Additional Resources

For software developers, Concept2 can offer the following additional resources. Some are developed by Concept2, some are from third parties. All are provided on an ‘As-Is’ basis without support or warranty.


The PMI or Performance Monitor Interface is a software tool aimed at simplifying the task of developing ICT applications that are capable of processing data from the PM3 and PM4 Monitors used on the Concept2 Indoor Rower.
The PMI is an ActiveX control designed for communicating with the Performance Monitor. ActiveX Controls are effectively self contained packages that, once installed, can be used within any Microsoft Office Application.
Learn more

QT for Windows

For an example application, the Watt Challenge source code is available under LGPL license.
Download source code


The source code and plans for a complete project utilizing the Freeduino USB host board to connect to a PM3 or PM4 monitor is available as an example. A subversion client is needed for download.
Download source code


Please send an inquiry to for information on developing for iOS utilizing the iConnectConcept2 cable.


Please inquire to for information on developing for Android. Only Android devices with hardware and firmware that supports a proper USB Host (or USB OTG) and Android OS 3.1 or higher will work. For more information on which devices are compatible, please see