Every day's feelings,
painted in color
Combine weather, mood, and air quality to generate today's unique color, and collect a month's colors into your own spectrum.
🎨 Daily color generation
Combines weather (temperature/condition), mood, and air quality (AQI) to automatically generate a unique color for today — tuned to produce beautiful colors by default.
✨ Poetic color names
Every color is given a Korean-inspired poetic name such as "Misty Dawn Light" or "Honey Afternoon" — turning each day into a small poem.
📅 Monthly color calendar
Collect a month of colors into a calendar spectrum. Tap a date to revisit that day's color name, mood, and journal entry.
🧬 Color DNA analysis
After 30 days of journaling, your personal Color DNA unlocks — dominant color families, mood distribution, and personality insights.
📤 Share cards
Save today's color as a 9:16 Instagram Story or 1:1 square image and share it anywhere.
🏆 Achievements & streaks
30 achievement badges and consecutive-day streaks make daily journaling more rewarding.
📝 Backfill past days
Tap any empty date in the calendar to record a past day — never miss a color.
🔒 Full privacy
All data stays on your device. No server, no account. JSON backup and restore keeps your data safely in your hands.
Frequently Asked Questions
Q. How is the color generated?
We combine weather (temperature/condition), mood, and air quality (AQI) to compute an HSL color. The algorithm is tuned to produce beautiful colors by default and only becomes muted when all three inputs are unfavorable.
Q. Is my data stored on a server?
No. All data is stored only on your device. There is no server and no account.
Q. When does the analysis unlock?
Your Color DNA unlocks 30 days after first launch. An early unlock is also available via a rewarded ad.
Q. Can I log past days?
Yes. Tap any empty date in the calendar to record a color for a past day.
Q. Can I back up my data?
Yes. Use Settings > Export (JSON) to back up, and Import to restore.
App Info
Version
Current version: v1.0.0 Supported OS: iOS / Android
Privacy
Muldeulda never sends your journal, mood, or color data to any external server. All data is processed and stored only on your device.
About the App
Muldeulda - Daily Color Diary generates a unique color each day by combining weather, mood, and air quality data. Fill your monthly calendar with colors and unlock your "Color DNA" analysis after 30 days of journaling.
Key features: daily color generation with poetic color names, monthly color spectrum calendar, Color DNA personality analysis, share cards (9:16 & 1:1), 30 achievement badges, streak tracking, and JSON data backup/restore.
All data is stored locally on your device. No server, no account required. Free with ads.