Blog
Notes on money, health, and building apps
Essays and small experiments from Henry around budgeting, simple health tracking, and the journey of building CofiApps in public.
What is envelope budgeting — and why does it actually work?
The oldest budgeting trick in the book, explained simply. Why giving every dollar a job beats tracking after the fact.
A tour of Cashvelope: Budgets, Reports, and Calendar
The three views that make up the core of how Cashvelope works — and when to use each one.
How Cashvelope keeps your financial data private
Your money data belongs to you. Here’s exactly how Cashvelope handles it — and what "local-first" actually means.
Digital cash stuffing with Cashvelope
How to bring the classic envelope method onto your phone without losing the feeling of real cash.
Envelope method: a calm beginner’s guide
A simple walkthrough of the envelope method for people who hate complicated budgeting apps.
How many steps per day actually matter?
Looking past the 10,000-step myth and focusing on realistic movement goals you can keep.
Simple health tracking that doesn’t burn you out
Why small, low-friction tracking often works better than giant dashboards and trackers.
Marketing two apps in different niches
Early lessons from growing both a budgeting app and a health tracking app as a solo maker.