LYLU: AI Diary & Mood Tracker
Emil Herzberg Lifestyle iPhoneiPadiPod touch
LYLU: AI Diary & Mood Tracker is a free Lifestyle app for iPhone and iPad by Emil Herzberg. Requires iOS 15.1. Updated February 24, 2026.
- Price
- Free
- on the App Store
- Size
- 41 MB
- Age 12+
- Updated
- Feb 24
- 2026 · v1.0.2
Screenshots
About LYLU: AI Diary & Mood Tracker
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
What’s new
Version 1.0.2 · Updated February 24, 2026
-Improved subscription handling and stability improvements.
App privacy
The developer, Emil Herzberg, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
- Usage Data: Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: User ID, Device ID
- Purchases: Purchase History
- Financial Info: Payment Info
- Contact Info: Email Address, Name
- User Content: Audio Data, Other User Content
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Advertising Data, Other Usage Data
- Other Data: Other Data Types
Used for: Developer’s Advertising or Marketing, Analytics, App Functionality
Alternatives to LYLU: AI Diary & Mood Tracker
Looking for apps like LYLU: AI Diary & Mood Tracker? Here are 6 similar apps on the App Store. The highest rated is eMoods Bipolar Mood Tracker (4.8/5), and all 6 are free to download.
-
Moodin - AI Mood Tracker
-
Better Gigs: Remote Side Jobs
1.0
-
eMoods Bipolar Mood Tracker
4.8
-
Ninja Pro Connect
4.7
-
Zosi Smart
4.5
-
Google Opinion Rewards
4.7
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| LYLU: AI Diary & Mood Tracker | – | Free | February 24, 2026 | |
| Moodin - AI Mood Tracker | – | Free | Mar 2, 2026 | Compare |
| Better Gigs: Remote Side Jobs | 1.0 / 5 (1) | Free | Mar 16, 2026 | Compare |
| eMoods Bipolar Mood Tracker | 4.8 / 5 (4,250) | Free | Dec 7, 2025 | Compare |
| Ninja Pro Connect | 4.7 / 5 (4,279) | Free | Sep 24, 2026 | Compare |
| Zosi Smart | 4.5 / 5 (20,101) | Free | Oct 12, 2026 | Compare |
| Google Opinion Rewards | 4.7 / 5 (210,540) | Free | Oct 6, 2026 | Compare |