I don't love naming names, but Cozy sits somewhere between Day One and Obsidian. I always wanted to build a kind of "interface for your thoughts": your writing stays on your computer, all the time, and you never have to wonder where it lives.

I used Day One for years. The day they added AI was the day I went looking for something else. I want a dedicated app for journaling, and for a while I used Bear for that (still love it for notes). Your private thoughts shouldn't be fed into any AI. You're the one who decides whether they ever are.

That's why Cozy runs on a few simple principles:

1. Nothing synced to a server. No mystery cloud. Your journal lives right where you write it, on your own machine. No breach to worry about, no subscription, no stranger who can open your diary.

2. Nothing fed to an AI. Your private writing shouldn't train anyone's model. Nothing you write in Cozy is scraped, read, or shipped off to an algorithm. No AI, simple as that.

3. Your words are yours. What you write belongs to you. Maybe you're working through a rough day, maybe you're just keeping track of life as it happens. Either way you stay in charge: keep your entries to yourself, or export and share them whenever you like.

I've kept a journal for seven years, and I want to build a good app for people like me who are tired of subscriptions. So Cozy is a one-time payment, now and always, because there's no monthly server bill for me to cover.

For now it's desktop only (Windows and Mac), with iOS and Android planned.