Terence Hinrichsenterence ~ $

Projectsval projects : Project list // 10 items

Things I have built

A mix of shipped apps, proofs of concept and libraries. Private client work is described but not linked.

NAC Virtual Accompanist

A mobile app that plays full organ accompaniments for hymns, so congregations without an organist can still sing.

  • Proof of concept
  • 2026
  • Flutter · Dart · Riverpod · just_audio · Python · FluidSynth

Tuner & Pitch Pipe

An Android app for musicians: a real-time chromatic tuner and a pitch pipe in one, built around a hand-written YIN pitch detector.

  • Live
  • 2026
  • Flutter · Dart · Material 3 · just_audio

NACMIRS

The New Apostolic Church Music Information & Resource System: hymn scheduling, service programmes and music resources for congregations across Southern Africa.

  • Live
  • 2025
  • F# · Fable · React · Supabase · PostgreSQL · Azure

StockPro

Stock control and field jobs for HVAC and refrigeration teams: parts on every van, jobs assigned to a technician, and a signed job report from the client's site, even with no signal.

  • Live
  • 2026
  • React · TypeScript · Supabase · Capacitor · PWA

Helderberg Harriers website

The public site for a Somerset West running club founded in 1977, rebuilt from Wix as a static Astro site optimised for handover to non-technical volunteers.

  • Live
  • 2026
  • Astro · TypeScript · GitHub Actions · cPanel

run-club.online

A multi-tenant members app for running clubs: renewals and payments, time-trial results and PBs, events and a kit shop. Helderberg Harriers runs on it.

  • Live
  • 2025
  • Next.js · TypeScript · Supabase · PayFast · Vercel

Kiekie

A family connection app: once a day, at a random moment, everyone in the family shares one candid photo, and the photos become a private daily collage.

  • In progress
  • 2026
  • Flutter · Dart

Fable.Form.Simple.MaterialUI

A Material UI renderer for Fable.Form, so F# web apps built with the SAFE Stack get typed, composable forms with Material styling.

  • Archived
  • 2023
  • F# · Fable · React · Material UI

DependenFSharp

An F# rebuild of DependenSee: visualise the project and package dependency graph of a .NET solution.

  • Archived
  • 2024
  • F# · .NET

Advent of Code in F#

Yearly puzzle solutions, used as a sandbox for idiomatic F#: pattern matching, active patterns, sequences and the occasional state machine.

  • Live
  • 2020
  • F#