Heart Diary: Mood Journal

Sage Lab.

Contains adsIn-app purchases

About this app

Some feelings are hard to put into words.

Heart Diary is a mood journal and emotion diary that helps you begin with a feeling. Choose an emotion, add a few words or a photo, and give yourself a quiet moment to sort through the day.

■ Start with one feeling

• Choose from 21 emotion characters and a wide range of daily-life stickers.
• Write one sentence or a longer private journal entry—both are enough.
• When the first line feels difficult, use a writing guide or an AI-assisted diary draft.
• On complicated days, reflect on your feelings, thoughts, reactions, and wishes one step at a time.

■ Gently look back on what you wrote

• Read a supportive Heart Reply generated from the entry you choose to use.
• See your days build up in the diary feed and emotion calendar.
• Explore monthly and yearly mood patterns and review a longer period with Mind Report.
• Insights and AI responses support self-reflection and do not replace medical diagnosis or professional care.

■ Make the journal feel like yours

• Keep photos, everyday moments, and feelings together in one diary app.
• Search for older entries and memories whenever you want to revisit them.
• Personalize fonts, text size, emotion names, and emoji styles.
• Set reminders for a writing rhythm that fits your day.

■ Keep private memories protected

• Use app lock for personal diary entries.
• Prepare for a new device with Google Drive and file backup and restore.
• Save or share selected entries as images or PDF files.

Heart Diary is for anyone who wants a gentle mood tracker without the pressure to write a perfect page every day. It brings an emotion diary, private journal, photos, a calendar, and mood insights into one calm place.

Start with one feeling today. The words you leave behind can help you see your days and emotional patterns more clearly over time.

Some AI, analysis, and export features may require Premium. The free version may include ads.

Ratings and reviews

I just got this app and it's great! I just wish there was an option to take a picture as well as choosing one from the gallery as it'll make it a lot more convenient to quickly snap pictures

The little emotion icons are cute, but currently I can't see the names of each emotion in the app The UI and some translation still needs a bit of polishing, but overall the vibe is nice, tidy and clear And a dark mode in the future would be great, thanks for your app

its a great app but there are some problems for me 1-theres no black mode and my eyes already hurt after 1min 2-theres no way to get rid of a placed photos 3-theres no way to get more than 1 photo 4-you can only put one size of a photo (if its bigger/smaller the app just resizes the photo...)