Your Day, Written by AI.
Most people want to keep a journal but never find the time. With VivaLyn Sathi, you don't have to write — just talk about your day, and Sathi turns it into a beautiful diary entry. Key events, mood, reflections, all captured in your voice, written in your style, stored only on your phone.
From Conversation to Journal Entry
Sathi compresses your entire day — tasks, spending, wellness, conversations — into a structured summary, then asks an AI model to write a first-person diary entry. The result feels surprisingly personal, because it's built from your actual life.
A Journal That Writes Itself
AI-Written Entries
Share how your day went by voice — during a conversation or as a dedicated check-in. Sathi listens to everything and writes a personal, first-person diary entry that captures your key events, emotions, and reflections. No typing needed.
Handwritten Notebook Feel
Your diary isn't displayed as a plain text document. It appears on a cream-coloured notebook page with ruled lines, a red margin, and a warm handwritten-style font. It feels like a real journal — because it should.
Emotional Patterns
Every entry is tagged with an emotional tone — calm, stressed, happy, anxious, motivated. Over weeks and months, you can see patterns emerge: what makes you happy, what triggers stress, how your mood shifts with seasons or events.
Key Memories & Open Loops
Sathi doesn't just write prose. It extracts structured metadata — key memories worth remembering and open loops (things you mentioned but haven't resolved). These feed back into future conversations so nothing gets lost.
Daily Streaks
Consistency matters. Sathi tracks your diary streak — how many consecutive days you've journaled. Hit milestones and build the habit of daily reflection without the effort of writing.
Private & Encrypted
Your diary entries never leave your phone. They're stored in an encrypted local database, visible only to you. No cloud sync, no server storage, no third-party access. Your thoughts stay yours.
What Goes Into Your Diary
Tasks & Accomplishments
Completed tasks, overdue items, and what you planned versus what you actually did.
Spending Summary
Total amount spent, biggest categories, and any notable purchases mentioned in conversation.
Emotional Tone
Eight mood categories tracked: happy, calm, neutral, stressed, sad, angry, anxious, excited.
Conversation Highlights
Key topics from your AI conversations — decisions made, advice given, things you talked through.
Wellness Activity
Sleep hours, water intake, exercise minutes, and how they compare to your usual patterns.
Open Loops
Things you mentioned but haven't acted on — doctor appointments, follow-ups, unresolved decisions.
Start Journaling Without Writing
Download VivaLyn Sathi and let your AI companion capture your life, one day at a time.