I’m Jason Kemp, an app developer specializing in iOS and Apple Watch apps, particularly in fitness and health.

I have over 15 years experience designing and developing client-side applications. I’ve shipped apps on Windows, BlackBerry, Symbian, Windows Mobile, Android and iOS.

Successful apps must be useful, correct and clear. I can help make your app a success.

If you’re looking for that kind of help, you should go to this website.

Personal Projects

To stay fresh and scratch my own itches, I have several ongoing projects where I am responsible for everything: code, design, assets, copy etc. I aspire to be a technical polymath. When I started nearly two decades ago, that was much easier than it is today.


I’ve been writing online since 2004, across three blogs. Two are now defunct, but still on the internet for all to enjoy.


  • MysticMatch
    This one was purely for the fun of it. I created it to practice what I thought were good practices to writing an app. It’s a little too fancy, looking back. I intend to come back to it. It’s free.
  • My After
    I started this one with the same intention of MysticMatch, to learn; but it turned out well enough that I’m trying to make a go of making it successful. I write about developing this one here. I codenamed it Project Kapowski. I decided all future projects will be codenamed for characters in Saved By The Bell.