Ember Quill Heatmap

Ember Quill Heatmap is a private daily journaling app built around one simple idea: writing every day should feel rewarding. At its core is a calendar heatmap that shows your writing consistency at a glance — the more you write, the deeper the color burns across your calendar grid.

Every entry supports mood tagging and free-form text, letting you capture thoughts, memories, and reflections without any friction. There is no account to create, no data sent anywhere, and no subscription to manage. Everything lives on your device.

The app ships with multiple themes — two light and two dark — so you can match it to your environment or preference. A subtle SVG pattern background keeps the interface visually interesting without distracting from your writing. You can also choose a personal avatar from a small set of illustrated options, and adjust font size and date format to fit your reading habits.

A five-screen onboarding flow walks you through the key ideas on first launch, then stays out of your way permanently. From there, the main experience is straightforward: open the journal, write, and watch your heatmap grow over days and weeks.

No ads, no upsells, no network access required. Just a clean, offline writing habit tracker that respects your time and your privacy.