Here we have professional, high quality Windows or Android apps provided free as part of Tronisoft's free STEM application series.

Check out DACIO VisCon - Visual Controller, a "block based" visual programming software for controlling hardware. It currently works with our DACIO 300 range of control boards but could be expanded to include other control boards in future. Email us if you want to add your hardware or for feature suggestions.

New CBLOX provides rapid application development with virtual components and graphing components for sensor data capture / logging or data acquisition and lab control. Its supports serial port devices (including our DACIO 300 device). Two wire I2C support is also available for access to 1000's of sensors from major manufacturers.
A commercial use license is also availbale.

See also our professional, Resistor Color Code Calculator with an enhanced user interface for quick determination of component values especially those in-circuit that cannot be measured accurately. Also a "Resistor SMD Code Calculator for 4 different code types. Get instant surface mount results: mOhm (milliOhm), Ohm, kOhm, MOhm (MegaOhm) and GOhm.

Feel free to submit further electronics or STEM related app suggestions to us and we will look at getting it done!