Book Spotter
iPhone and Android app that uses the camera and augmented reality to spot the books you are looking for on any shelf, offline, entirely on your device.
Details →A fast, offline score keeper for Nertz, built for the pace of the game.
Submitted to the App Store, in reviewStatus as of November 12, 2026
Version 1.0.0 was submitted to Apple on November 11, 2026 and is waiting on review. It is not on the App Store yet, so there is no store link here.



Nertz is loud and fast, and the scoring between rounds is where the game stalls. Nertz Score takes two numbers per player, cards played to the center and cards left in the Nertz pile, and does the rest: who called Nertz, the bonus, the penalties, and the running total.
It runs entirely on the phone. There is no account to create and no server behind it, so it works at a cabin with no signal the same as it does at home.
iPhone and Android app that uses the camera and augmented reality to spot the books you are looking for on any shelf, offline, entirely on your device.
Details →iPhone app for resellers: photograph a thrift-store shelf or an estate-sale table and it flags anything likely to resell above your minimum price.
Details →Time tracker for Mac, iPhone, and the browser, synced through one small server. We run the business on it every day.
Details →Offline tool for investigators: it transcribes a jail-call export on a workstation with no internet and builds a searchable review report that opens in any browser.
Details →We scope it, build it, test it properly, and keep it running. You deal with the engineer who writes the code.
