MaruLog: AI Emotion Diary

Contains adsIn-app purchases
Content rating
Everyone
10+
Downloads
Content rating
Everyone
In-App Purchases
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About this app

A diary you can keep even on the hard days.

MaruLog is an AI emotion diary that holds your difficult feelings instead of pushing them away. If today felt heavy, write it down, even a line. The AI reflects your story back and offers a warm word, and finds the trends and patterns in what you've written. If it senses you're in danger, it quietly points you to professional help.

■ It holds the hard feelings too
No forced gratitude or positivity. Sadness, anxiety, and burnout are welcome as they are.
The AI responds with empathy, never judgment, and offers a warm word.
Choose the AI's tone: a warm companion, a quiet presence, gentle cheer, or a close friend.
When what you write sounds really heavy, it shares a local helpline.
(MaruLog is a self-care diary, not a medical device. It does not diagnose, treat, cure, or prevent any medical condition. For medical advice, diagnosis, or treatment, please consult a healthcare professional.)

■ See your heart as data
Mood trends and patterns, an emotion radar, and a Valence-Arousal map.
Mind Weather Type, Emotional Variety and Mood Waves cards help you quietly look back on how you've been lately.
Pick and reorder 13 report cards to make the report your own.
A calendar and Year in Pixels to see a whole year of feelings at a glance.
A 30-day monthly report and shareable report images.
Export your data as CSV or JSON, anytime — it's always yours.

■ Your records follow you everywhere
Automatic cloud sync, switch phones, just log in, and it's all there.
Readable on the web too.
33 languages supported.

■ Keep it light, every day
Quick Log: an emoji plus one line in 30 seconds.
Home screen widget: see whether you wrote today, plus the daily quote.
Today's quote: world classics, proverbs, and gentle 'it's okay to…' sentences.
Attach photos or YouTube; 13 theme packs, fonts, and painted or photo backgrounds.
Calming ambient sounds: 25 gentle tracks that never suddenly get loud.

■ Premium
Ad-free, 30-day monthly report, report images, unlimited AI analysis.
Purchase in the app; premium applies on the web too.

A cozy place to care for the you who worked hard today. Leave today's feelings with MaruLog.
An AI diary that holds hard days and shows mood patterns.
Updated on
Oct 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • This app may collect these data types
    Location, Personal info and 6 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

🖼️ Premium: you can now hide the MaruLog logo on share cards.
🔒 Security updates to diary & photo encryption and the app framework.
💬 Thanks for testing MaruLog. Tell us anything at support@centidesoft.com.
Content rating
Everyone
In-App Purchases
Learn more

App support

About the developer
정선욱
support@centidesoft.com
경기도, 성남시, 분당구, 정자일로 135 C동 1615호 (정자동, 정자동3차푸르지오시티) 분당구, 성남시, 경기도 13560 South Korea

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