LYLU: AI Diary & Mood Tracker
Lifestyle
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Speak instead of typing. LYLU is a voice-first diary that transcribes your daily audio notes with AI and turns them into clear emotion graphs, so you can actually see how you’ve been feeling over time.
Record a short check-in, get the transcript, and LYLU will analyze the emotional tone of your entry across multiple dimensions such as sad–happy, anxious–calm, ashamed–proud, overwhelmed–in control, and more. Your days are mapped into a calendar and visualized in simple, beautiful charts for days, weeks, months, and the full year.
How LYLU works:
Record – Hold the mic and talk about your day. No titles or manual sorting. Each recording is saved under today’s date.
Transcribe – Your audio becomes fully editable text using modern speech-to-text models. Edit, delete, or copy your diary entries anytime.
Track your emotions – Every entry is analyzed for sentiment. LYLU aggregates your recordings per day and shows how your emotional patterns evolve.
What you can view:
• Emotion pairs for a detailed mood profile (sad–happy, anxious–calm, ashamed–proud, overwhelmed–in control, etc.)
• Polarity and arousal map, from negative to positive and low-energy to high-energy
• Multiple graph types: simple averages, daily variations and spikes, emotional changes over long periods
• Calendar-based diary showing which days include recordings
Free vs Pro:
LYLU (Free):
• Record and transcribe short voice notes (up to 120 seconds each)
• Daily transcription limit of 6 minutes
• Full access to emotion analysis and graphs
• Ad-supported
LYLU Pro (subscription):
• Unlimited transcriptions
• Record up to 10 minutes per entry
• Faster, higher-quality AI processing
• No ads
• Designed for deeper reflection and long-form audio diaries
For people who:
• Prefer speaking instead of typing journals
• Want an easy, tech-assisted emotional check-in
• Enjoy seeing their mood trends in visual graphs
LYLU is made for self-reflection and emotional awareness. It is not medical or therapeutic advice and does not replace professional mental health care.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://ai-diary.herzberg-dynamics.de/legal.html#pp
Terms & Conditions: https://ai-diary.herzberg-dynamics.de/legal.html#tc
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
-Improved subscription handling and stability improvements.
The developer, Emil Herzberg, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Financial Info
- Location
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Emil Herzberg
- Size
- 43.3 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- This app is rated 13+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls. - In-App Controls
Age Assurance
Contains
Advertising
User-Generated Content
- In-App Purchases
Yes
- LYLU Pro - Monthly $6.99
- Copyright
- © 2026 Emil Herzberg