LYLU - AI Diary & Mood Tracker

Emil Herzberg

Contains adsIn-app purchases

About this app

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.