It was originally developed by Maurice Flanagan in 2009 and was provided as free and paid versions. The author who no longer has time to maintain it has open-sourced it. See the original repository: ...

leaves (15 raspberries and 6 blackberries) analyzed by high-performance liquid chromatography (HPLC ... The Q3G content is higher in raspberry leaf extract than in black currant, honeysuckle, bilberry ...