Six products across hardware, iOS, and the web — including Par72, the golf-league platform built for head pros. Same rigor whether the user count is two or a paying league.
A private relationship dashboard. One household. Eight years of communication, music, and shared life, collapsed into the screens that two specific people open every morning.
Forensic-grade race timing for 1:64 scale Hot Wheels tracks. ESP32-S3 firmware, sub-millisecond timing, audio cues, and a physics teaching mode. Originally built for a sixth-grade science fair.
A touchscreen jukebox and tip jar for mobile DJs. The crowd browses the catalog on a booth-facing screen, tips to request a song, and pays by scanning a Stripe QR — while the DJ runs the night from an iOS app over BLE.
Multi-tenant golf league management for head pros. AI-assisted scheduling, scoring, and season operations — the platform built to retire the spreadsheet and Golf Genius. The one thing here built to be sold. TPS League is tenant #1.
A full golf league running in production on Par72 — schedules, scoring, GHIN handicap sync, pairings, and course rotation across thirty-nine Front Range courses. Proof the platform runs a real season, not a demo.
Automated grade verification and homework accountability for parents. Pulls assignment data, detects grading errors, tracks submissions, and delivers daily reports to the whole family.
Real terms, real privacy, real support — and a hard line on data: no ad networks, no tracking SDKs, no data brokers. This site makes zero third-party requests, and the products hold the same line with your information. The rigor that goes into the code goes into how it treats the people who use it.
Massfeller LLC is a single-member Florida-operated, Wyoming-formed limited liability company owned by Ryan Massfeller. More about the company →