Started developing on an Apple II+ in 1981. Developed PISA, full colour presentation system including slide and print output, utilising Apple Graphics Tablet and Digisolve VGP64 with hi-res monitor. Developed printer drivers for most early colour printers and slide recorders. Developed StudioCraft presentation software for colour Macs. Retired to farm, build and raise children in 1991. Took up developing again in 2010 on iOS when I saw the need for a music player that was more suited to stage performers than iTunes App. Developed OneTrack App and released version 1.0 in 2011. Still have too many things on my plate to develop full time but OneTrack is now at version 4 and going strong. Not a huge market but very loyal customers and loads of positive feedback so I'll keep going.