Everything VivaLyn Sathi Can Do.
Voice conversations, AI diary, expense tracking, smart tasks, wellness scoring, medication management, fall detection — and it all works in Hindi. Here's a detailed look at every feature that makes VivaLyn Sathi your complete AI life companion.
Speak Naturally. VivaLyn Sathi Listens.
VivaLyn Sathi is built around voice from the ground up. No menus to navigate, no forms to fill, no buttons to find. Just tap and talk — in Hindi, English, Bengali, Tamil, Telugu, or Marathi. Mix languages freely. VivaLyn Sathi understands exactly what you mean.
Natural Voice Conversations
Speak to VivaLyn Sathi like you’d speak to a friend. No rigid commands or specific phrases needed — just talk naturally and VivaLyn Sathi understands what you mean.
Hindi-English Code-Mixing
Mix Hindi and English in the same sentence — "kal meeting ke baad chai piyi, 150 rupees". VivaLyn Sathi understands Hinglish the way real Indians speak.
Contextual Responses
VivaLyn Sathi doesn’t give generic answers. It uses your conversation history, preferences, and life context to give responses that actually make sense for you.
Instant Voice Actions
Say "remind me to call doctor tomorrow at 10" or "200 rupees auto" and it's done instantly. Voice commands are processed and acted on in real-time.
Your Day, Written by AI.
Most people want to keep a journal but don't have the time or energy to write one. VivaLyn Sathi solves that — just talk about your day during any conversation, and it automatically generates a rich, personal diary entry with mood analysis, key events, and reflections. A journal that writes itself.
AI-Written Journal Entries
Share how your day went by voice, and VivaLyn Sathi generates a beautifully written diary entry — capturing key events, mood, reflections, and emotional undertones.
Handwritten-Style Format
Every diary entry is displayed in a warm, handwritten-style font that makes your digital journal feel personal and intimate — not like a text document.
Emotional Patterns Over Time
VivaLyn Sathi tracks sentiment across your entries — spotting patterns in your mood, identifying triggers, and helping you understand your emotional rhythms over weeks and months.
Private & Encrypted
Your diary entries never leave your phone. They're encrypted on-device and visible only to you. No cloud sync, no server storage, no third-party access.
Say It. It's Logged.
Tracking expenses shouldn't feel like homework. With VivaLyn Sathi, just mention what you spent — during a conversation or with a quick voice command — and it's automatically logged with the right category, amount, and date. Scan receipts for larger purchases. See where your money goes without manually entering a single number.
Voice-First Logging
Say "chai 30 rupees" or "auto mein 150 lage" and the expense is logged with amount, category, date, and payment method — all extracted from natural speech.
Bill & Receipt Scanner
Point your camera at any receipt, bill, or prescription. VivaLyn Sathi’s AI vision reads the document and extracts amounts, items, and categories automatically.
Spending Insights
Get daily, weekly, and monthly breakdowns of your spending. See which categories you spend most on and track your budget progress without any manual effort.
Smart Categories
VivaLyn Sathi auto-categorises expenses into 10 categories — food, transport, shopping, health, education, and more. No manual tagging needed.
Tell Your AI. It Remembers.
Forget apps with 20 input fields just to add a task. Tell VivaLyn Sathi what you need to do — it creates the task, sets the right date and time, picks the category, and reminds you when it matters. Works with natural language in Hindi and English. Your voice becomes your to-do list.
Voice Task Creation
"Kal 10 baje meeting hai" — task created with date, time, and reminder. Create tasks naturally without opening any app or typing a single word.
Intelligent Reminders
VivaLyn Sathi doesn’t spam you with notifications. It uses a smart notification system that considers your daily patterns, quiet hours, and notification fatigue before alerting you.
Schedule at a Glance
See your day, week, and month at a glance. Tasks are organised by priority and date, with overdue items highlighted so nothing slips through the cracks.
Smart Task Categories
Tasks are automatically categorised — work, personal, health, finance, errands. VivaLyn Sathi learns your patterns and gets better at categorising over time.
Track How You Live. Not Just What You Do.
VivaLyn Sathi goes beyond simple habit tracking. It computes a personalised longevity score across 7 dimensions of your wellbeing — emotional stability, routine consistency, social connection, cognitive activity, stress management, sleep regularity, and physical activity. All from data you naturally provide through daily conversations and a quick 30-second voice check-in.
30-Second Daily Check-in
A quick swipeable check-in captures your mood, sleep hours, water intake, and exercise minutes. Or just speak it all at once — "I'm happy, slept 7 hours, had 5 glasses of water and walked 30 minutes".
7-Dimension Longevity Score
Get a personalised longevity score (0–100) based on emotional stability, routine consistency, social connection, cognitive activity, stress management, sleep regularity, and physical activity.
Streaks & Milestones
Build consistency with daily check-in streaks. Hit milestones — 7-day streak, 30-day warrior, 100-day legend — and celebrate your progress with a trophy wall.
AI Wellness Insights
VivaLyn Sathi spots correlations between your habits — like how exercise affects your mood, or how sleep quality impacts your stress levels. Get personalised tips based on your actual patterns.
Peace of Mind for the Whole Family.
If you have elderly parents or family members living independently, VivaLyn Sathi helps you stay connected and keep them safe. Medication reminders that speak aloud, fall detection using just the phone, voice-activated calling, and gentle social nudges — all designed for people who prefer speaking over typing.
Fall Detection
Using your phone's built-in accelerometer, VivaLyn Sathi detects sudden falls with a 2.5G threshold. A 10-second countdown gives you time to cancel — if no response, your emergency contacts are alerted automatically.
Medication Management
Add medications by voice — name, dosage, frequency, and times. VivaLyn Sathi sends spoken reminders in Hindi or English and tracks whether doses were taken. Perfect for elderly family members.
Voice-Activated Calling
Say "call Papa" or "Mummy ko phone karo" and VivaLyn Sathi finds the right contact and initiates the call. Supports Hindi relationship terms — mummy, papa, bhai, behen, didi, and more.
Social Connection Monitoring
VivaLyn Sathi tracks how often someone connects with family and friends. If it's been a while, gentle nudges encourage reaching out — helping combat loneliness, especially for seniors living alone.
Turn Memories Into Stories. Automatically.
Pick a few photos, and Sathi creates a short video reel with AI-written captions and background music. No editing app needed. Share directly to WhatsApp or Instagram — your memories deserve more than sitting in a gallery.
Create Video Reels from Memories
Select photos from your gallery and Sathi turns them into short video stories with AI-generated captions, background music, and smooth transitions. No editing skills needed — just pick, preview, and share.
Auto-Generated Captions
AI reads your diary and conversation context, then writes captions that match the mood of your photos — funny, reflective, or grateful. Every story feels personal because it is.
Built-in Music Library
Choose from curated background tracks or let Sathi pick one based on the emotion of your story. Happy weekend? Upbeat track. Quiet Sunday? Soft piano. All royalty-free.
One-Tap Sharing
Share your story directly to WhatsApp, Instagram, or save it to your gallery. Sathi adjusts resolution and aspect ratio automatically — no cropping or resizing needed.
Scan a Prescription. Reminders Set.
Every Indian knows the struggle of reading a doctor's handwriting. Point your phone's camera at any prescription — Sathi reads it, extracts the medications, and creates reminders with correct timing. No typing. No guessing. Works offline.
Scan Any Prescription
Point your camera at a doctor's prescription and Sathi reads it using on-device OCR. It extracts medication names, dosages, frequencies, and duration — even from handwritten prescriptions.
Auto-Create Medication Reminders
Scanned medications are instantly turned into reminders with correct timing — morning, afternoon, night, before/after food. No manual entry needed.
Prescription History
All scanned prescriptions are stored locally with dates, doctor names, and extracted text. Search your prescription history by medication name or date — useful for follow-ups.
Works Offline
OCR runs on your device. Even without internet, you can scan prescriptions and create reminders. Nothing is sent to any server.
Say What You Need. The List Writes Itself.
"Tamatar, pyaaz, dahi, and atta" — that's your grocery list done. Sathi categorises items, learns your weekly staples, and lets you share the list on WhatsApp so the whole family can add to it.
Voice Grocery List
Say "add tomatoes, onions, and dahi" and Sathi creates a categorised grocery list. Add items naturally during any conversation — no need to open a separate list app.
Smart Categories
Items are auto-categorised into vegetables, fruits, dairy, grains, household, and more. Walk through the store and check off items by section — no backtracking.
Recurring Staples
Sathi learns your weekly patterns. If you buy milk and bread every week, it suggests them on your grocery day. One tap to confirm.
Share with Family
Share your grocery list via WhatsApp. Family members can add items by texting — Sathi merges everything into one list.
Thought? Captured. In Under 3 Seconds.
Long-press the mic and speak. Your voice is transcribed, analysed, and routed — expenses go to expenses, tasks go to tasks, reflections go to your diary. Everything captured without opening a single menu.
Instant Voice Notes
Long-press the mic button and speak — your thought is captured instantly as a voice note with auto-transcription. No need to navigate screens or wait for the AI to respond.
Smart Note Extraction
Quick captures are analysed by AI and routed automatically. An expense mention becomes an expense entry. A task mention becomes a task. A reflection becomes a diary fragment.
Timestamped & Searchable
Every quick capture is timestamped and full-text searchable. Forgot what you captured last Tuesday? Just search for it.
Reminder from Capture
Say "remind me about this tomorrow" during a quick capture and Sathi sets a follow-up reminder automatically — no extra steps.
Your Routine, Automated.
Create multi-step workflows that trigger on a schedule or voice command. Morning brief, evening wind-down, weekly review — Sathi runs the sequence so you don't have to remember it.
Automated Morning Routines
Set up a morning workflow: Sathi reads your tasks for the day, gives a weather update, reminds you of medications, and plays your favourite playlist. All triggered by one voice command or scheduled time.
Custom Triggers
Create workflows that trigger on time, location, or voice command. Example: "When I say goodnight, log my water intake, check tomorrow's tasks, and set an alarm for 6 AM."
Pre-built Templates
Start with templates — Morning Brief, Evening Wind-Down, Weekly Review, Health Check-in — and customise them to match your rhythm.
Workflow History
See when workflows ran, what actions were taken, and what changed. Full accountability without manual tracking.
Focus, Relax, or Sleep — Just Ask.
20+ ambient soundscapes built right into the app. Rain on a tin roof, temple bells, ocean waves, lo-fi beats for studying. Say "play something calming" and Sathi picks a track based on your mood.
Ambient Sound Library
Choose from 20+ ambient soundscapes — rain, forest, ocean waves, café chatter, temple bells. Play during work, meditation, or sleep. No subscription needed.
Voice-Controlled Playback
Say "play rain sounds" or "something for studying" and Sathi picks the right track. Pause, skip, or change with voice — no screen interaction needed.
Sleep Timer
Set a sleep timer by voice: "stop music in 30 minutes." Sathi fades out gradually so you drift off naturally.
Mood-Based Suggestions
Sathi knows your mood from your conversation. Feeling stressed? It suggests calming sounds. In a focused zone? Lo-fi beats. The music adapts to your state.
Your Voice Is the Password.
Sathi recognises who's speaking. Lock sensitive sections behind voice biometrics — your diary, financial data, and private conversations stay hidden unless it hears your voice. All processed on-device. No voice data sent anywhere.
Voice Biometric Lock
Set up a voice print during onboarding. Sathi recognises your voice pattern and unlocks features only for you. If someone else says "open my diary," it stays locked.
Sensitive Section Protection
Lock diary entries, financial data, or specific conversations behind voice authentication. Even if someone picks up your phone, your private sections stay private.
On-Device Processing
Voice print matching runs entirely on your phone. No voice data is sent to any server. Your biometric signature never leaves the device.
Multi-User Support
Register up to 3 voice profiles on a shared device. Each user gets their own diary, expenses, and conversation history — separated by voice recognition.
Find Anything You Ever Said.
Every conversation is archived, timestamped, and searchable. Ask "When did I mention the Bangalore trip?" and Sathi finds it — even weeks later. Export transcripts anytime. Your data. Your format. Your control.
Full Conversation Archive
Every conversation with Sathi is saved locally — timestamped, labelled, and browsable. Scroll back days, weeks, or months to find what you discussed.
Semantic Search
Search by meaning, not just keywords. Ask "When did I talk about the Delhi trip?" and Sathi finds the exact conversation — even if you never used the word "Delhi" explicitly.
Conversation Analytics
See patterns in your conversations — which topics come up most, how your mood trends over time, which persona you use most frequently. Insights drawn from your own words.
Export & Backup
Export conversations as text files for personal backup. Sathi generates clean, readable transcripts with timestamps. Your data, your format, your control.
Five Personalities. One AI That Adapts.
Not everyone uses AI the same way. A busy professional needs a planner. A senior citizen needs a patient companion. A fitness enthusiast needs a coach. VivaLyn Sathi adapts with five distinct persona modes — each with its own personality, tone, and focus areas. Switch anytime with one tap.
Saathi (Companion)
Your everyday AI friend
Warm, conversational, and genuinely invested in your day. Saathi is the default mode — perfect for daily conversations, diary dictation, quick expense logging, and general life management. It remembers your patterns, picks up on your mood, and responds like a friend who actually pays attention.
Best for: Daily conversations, diary writing, general life management
Planner
Structured and precise
Planner mode is all business — clear, structured, and focused on keeping you organised. It creates tasks with deadlines, sets smart reminders, manages your schedule, and gives you briefings about what's coming up. Perfect for professionals who want an AI assistant that keeps them on track.
Best for: Task management, scheduling, professional organisation
Coach
Motivational and goal-oriented
Coach mode encourages healthy habits and celebrates your wins. It tracks your wellness score, reminds you to stay hydrated, encourages exercise, and congratulates you on check-in streaks. Think of it as a supportive buddy who nudges you toward better habits — without the guilt trips.
Best for: Wellness tracking, habit building, fitness motivation
Family Care
Senior-friendly and safety-focused
Designed specifically for elderly family members and caregivers. Family Care mode speaks slowly and clearly in Hindi, uses larger interface elements, manages medication reminders with spoken alerts, enables fall detection, and makes calling family as simple as saying "Beti ko phone karo".
Best for: Seniors, medication management, fall detection, family safety
Journal
Reflective and thoughtful
Journal mode turns your daily conversations into beautifully written diary entries. It asks thoughtful follow-up questions, captures emotional nuance, and creates journal entries that read like literature — not bullet points. Perfect for people who want to reflect on their day but don't have the energy to write.
Best for: Daily journaling, self-reflection, emotional tracking
Smart AI. Zero Compromise on Privacy.
VivaLyn Sathi uses advanced AI to understand your life context, generate diary entries, and parse voice commands — while keeping every piece of your personal data on your phone. The server is a stateless proxy that processes your voice and immediately forgets. No accounts to create. No data to hand over. No trade-offs between intelligence and privacy.
Persistent Memory
VivaLyn Sathi remembers your conversations, preferences, routines, and life events across sessions. It uses a two-tier summarisation system that keeps your context fresh without storing everything forever.
5 AI Persona Modes
Switch between Saathi (everyday companion), Planner (task-focused), Coach (wellness-oriented), Family Care (senior-friendly), and Journal (reflective). Each persona has a distinct personality and communication style.
6 Indian Languages
Full support for English, Hindi, Bengali, Tamil, Telugu, and Marathi — across voice input, AI responses, and voice output. Switch languages mid-conversation or mix them freely.
100% On-Device Privacy
All your personal data — diary, tasks, expenses, wellness, memories — is stored and encrypted on your phone. The server is a stateless proxy that processes and forgets. Your data is never stored remotely.
One App Instead of Six.
Most people use separate apps for journaling, task management, expense tracking, wellness, and reminders. VivaLyn Sathi combines all of these into a single voice-powered companion that understands your life as a whole — not as disconnected data silos.
Journal Apps
Replaces: Day One, Journey, Penzu
AI writes your diary from conversations
Task Managers
Replaces: Todoist, TickTick, Google Tasks
Voice-created tasks with smart reminders
Expense Trackers
Replaces: Walnut, Money Manager, Splitwise
Voice logging + receipt scanning + insights
Wellness Apps
Replaces: Daylio, Bearable, MyFitnessPal
30s voice check-in + 7-dimension longevity score
Medication Apps
Replaces: Medisafe, MyTherapy
Voice medication management + spoken reminders
Voice Assistants
Replaces: Google Assistant, Alexa
AI that remembers your life across sessions
Ready to Try VivaLyn Sathi?
Free to download. No subscriptions. No data sold. All features included.
iOS coming. Join the waitlist to be notified.