Joost Prins
Building with AI. In public. Apps, automations and experiments built with AI. For each one: how it was made, what it took, and what came out.
Money
Tools that make personal finance legible.
Geldzaken
A household budget that feels like an app. A budgeting app: income on top, divided over pots, with savings goals and a live 'still to divide' counter. Optional Firebase login keeps every device in sync.
Goals
Systems for habits, training and learning.
Goals
What I'm trying to achieve and learn, on one page. Not a task manager: a goal period, a handful of goals, the weekly standards I want to keep, and a log of what I actually did. Plus a curiosity side for topics I want to understand, with modules, notes and links.
Sportplan
A one-page training plan. A training plan for 2026 as a single, self-contained page.
Home
Shared household tools and a renovation command centre.
Boodschappen
The shared grocery list that learns your categories. A shared shopping list for a household: items with quantity, store, category, note and photo, automatic categories that remember your corrections, and barcode scanning.
Huisje OVS
A renovation command centre. One place for a house renovation: overview, budget against actuals, planning, work days, contacts and open decisions.
Play
Games and hobby apps built for the fun of it.
Geheime Dienst
A real-life secret-roles game, as an app. The companion app for a real-life secret-roles game at a campsite: role cards, group chats, deadlines with countdowns, and a game-master console.
Wijnkelder
Your wine cellar in your pocket. A cellar manager: which bottles you have, when to open them, what the cellar is worth and what goes with tonight's dinner.
Reading
Capturing and processing what I read.
Article Hub
A reading archive with the highlights kept. Articles worth keeping, saved as clean readable pages with highlights and notes. One HTML file with your own Supabase project behind it.