Thanks! SpreadServe's own SSAddin [1] is Excel-DNA based, uses RTD, and works perfectly in both SpreadServe and Excel. The youtube channel has a video demo [2].

Thanks! SpreadServe's own SSAddin [1] is Excel-DNA based, uses RTD, and works perfectly in both SpreadServe and Excel. The youtube channel has a video demo [2]. [1] https://github.com/SpreadServe/SSAddin https://github.com/SpreadServe/SSAddin [2] https://www.youtube.com/watch?v=MmPPMsOCmqA&t=290s https://www.youtube.com/watch?v=MmPPMsOCmqA&t=290s