Mimu - AI Alter Ego Diary
Your AI Self Writes Your Diary
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Weather now feels right at home in your journal. From the day you allow location, the sky joins your story. Start a 3-day free trial and meet your other self.
[What is Mimu?]
An AI alter ego that writes your diary for you, every single day.
You want to journal but can't keep it up. You're too busy to reflect. Mimu solves this -- your alter ego stays by your side all day, observing and recording your life.
This is not a chatbot. It's a new kind of journaling where "your other self" writes for you.
[A Day with Mimu]
- Morning Greeting
Your alter ego greets you each morning with words just for you. Share how you're feeling today.
- Whispers & Inner Voice
Throughout the day, whisper your thoughts. Your alter ego responds with an "inner voice" -- not a chat, but an internal dialogue, like talking to yourself.
- Nightly Diary
At the end of each day, your alter ego writes a diary reflecting on your mood, whispers, weather, and more -- weaving it all into one story.
[Grows with You]
Your alter ego builds memory over time. Day 1 entries are simple. Month 1 entries show real insight. It notices patterns you never saw:
"You tend to feel low on Mondays."
"Days when you whisper more are actually your happier days."
[Uniquely Yours]
Customize the name, personality, and tone. MBTI, zodiac, and personality traits shape how your alter ego thinks and writes. No two are alike.
[Features]
- Every word is AI-generated daily -- no templates, ever
- Mood calendar to visualize emotional patterns
- Diary archive for easy reflection
- iCloud sync across devices
- Available in Japanese, English, Korean, and Chinese
[Subscription]
- Monthly: $2.99/month
- Yearly: $29.99/year (save 17%)
- Both include a 3-day free trial
- Auto-renews after trial unless cancelled
- Cancel anytime in Settings > Apple ID > Subscriptions
[Privacy]
No personally identifiable information is sent to the cloud. Your diary data is stored securely on your device and in iCloud.
Terms of Use: https://mimu.remosia.biz/en/terms
Privacy Policy: https://mimu.remosia.biz/en/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Weather icons now render correctly in your journal. The moment you grant location access, today's weather is fetched automatically for that night's entry.
What's improved:
- Weather icons display reliably now, so each day's mood and weather stay together in your reflections.
- The first time you grant location access, weather is fetched right away — no waiting for tomorrow.
- Settings > "Auto-fetch weather" shows the most recent fetch result so you can confirm it's working.
- Polished display details across Japanese, English, Korean, and Simplified Chinese.
Fixed:
- Subscription state is now consistently respected across all alter-ego features, so trial and post-cancellation behavior is clearer.
- The screen now communicates clearly when you're not eligible for the free trial.
- Various small bug fixes and overall stability improvements.
The developer, 株式会社リモシア, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- REMOSIA, K.K.
- Size
- 5.7 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 3 more
- English, Japanese, Korean, Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly Plan $1.99
- Copyright
- © 2026 Remosia Co., Ltd.