Thinking about heatmaps
Why a contribution-style heatmap might be the right spine for a personal diary.
productheatmap
A diary without a sense of time is just a pile of notes. A heatmap makes consistency visible without turning journaling into a performance.
Use cases
- Daily diary activity — did I write today?
- Habit completion — mood, exercise, reading
- Streaks — consecutive days without breaking the chain
- Weekly / monthly summaries — density over long ranges
Design notes
The heatmap should answer one question at a glance:
Am I showing up for myself?
Color intensity can map to word count, entry count, or habit score. Hovering a cell should reveal the date and a one-line summary — never force a full re-read to understand the year.
Libraries like Heat.js are a useful reference, but the data model should stay simple: date → activity weight.