Show HN: Daily Reflections – A private, zero-dependency, local-first PWA journal

I’ve spent years with ideas fizzling out at the "which framework should I use?" stage. This week, I finally felt like I found a magic wand: I stopped overthinking and went back to the basics.

I built Daily Reflections because I wanted a journaling space that was actually private—no accounts, no cloud, and no "SaaS-ification" of my personal thoughts.

The Implementation:

Vanilla Stack: 100% pure HTML, CSS, and JavaScript. No build step, no frameworks, no external libraries.

Local-First: Everything lives in localStorage. 0% of your data is transmitted to a server.

Data Portability: Since it's local-only, I added JSON backup/import and a monthly PDF export to ensure the user actually owns their data.

Visualization: I used the Canvas API for mood trend charts and a GitHub-style consistency heatmap to keep the footprint tiny.

Offline-First: It's a PWA with a service worker, so it works perfectly in airplane mode.

The "Then vs. Now" Feature: I wanted to solve the "write and forget" problem. The app automatically resurfaces entries from exactly 1 week, 1 month, or 1 year ago to provide immediate perspective on personal growth.

I'm using this as my primary journal now. I’d love to hear your thoughts on the local-first approach and any performance concerns regarding localStorage for long-term text storage.