We build products
for India's small sellers.
Sage & Stone is the studio behind ChatKhata — an AI order-book that turns chat orders into a live khata — and CODENAME, a made-in-India leather flying-jacket label — and Upright, a POTS tracker on the App Store. Bootstrapped, founder-built, shipped in public.
Products built
Founded · Lucknow
Udyam-registered
Outside funding · bootstrapped
Our products
PawPortal
Front-desk software for veterinary practices.
The system a vet clinic's front desk runs on: appointment scheduling, WhatsApp confirmations and vaccination reminders to pet owners, and patient records at the point of contact — the workflow that decides whether a small practice fills its calendar or fights no-shows. One deployment, many clinics: each clinic sees only its own data.
- ✓Appointment scheduling with an instant WhatsApp confirmation to the pet owner (Twilio)
- ✓Vaccination tracking with due-date dashboard and one-click WhatsApp reminders
- ✓Pet and owner records — species, breed, allergies, weight — surfaced at booking time
- ✓Multi-tenant by design: separate clinics, separate logins, isolated data
- ✓Clinic dashboard: today's appointments, vaccinations due this week, live counts
Upright
A POTS tracker your doctor can actually read.
A symptom tracker for people with POTS (postural orthostatic tachycardia syndrome). Upright guides a lying-to-standing heart-rate test, reads the numbers from Apple Health, records what was going on that day, and turns weeks of tests into a one-page PDF a cardiologist can act on.
- ✓Guided standing test with heart rate pulled straight from Apple Health
- ✓Optional blood-pressure entry, age-aware POTS threshold (+30 / +40 bpm)
- ✓Context on every test: sleep, exertion, meals, hydration, local weather
- ✓Doctor report as PDF, full history as CSV — free features stay free
ChatKhata
Order kahin se bhi aaye, khata khud bane.
An AI order-book for India's small chat-commerce sellers — boutiques, cloud kitchens, home businesses doing 10–20 orders a day over messaging. Incoming order messages become confirmed order cards and a live payment ledger (khata) automatically. Sellers just tap to confirm.
- ✓Connects to WhatsApp Business via the official Meta Coexistence API
- ✓AI parses who / what / how much / where from plain chat
- ✓Two ticks per order: Sent · Payment received
- ✓Free for the first 15 orders a month, then ₹299/month
CODENAME
Personalised leather flying jackets, made in India.
A direct-to-consumer label for hand-finished leather flying jackets with a personal callsign. Customers reserve online with a ₹499 booking token; the rest is paid on dispatch. Payments run on Razorpay with automated booking references and webhooks.
- ✓Next.js storefront with one-click Razorpay checkout
- ✓Automated booking references (CDN-XXXX) and paid-status webhooks
- ✓Supabase order ledger · Vercel hosting
MedicineScannerIndia
Point your camera at a strip. Know what you're taking.
Scan medicine packaging and get a plain-language card: what it is for, what to avoid, what to eat with it. Google Vision OCR reads the strip; a curated database of Indian brands matches by brand name first, then by salt, so generics resolve too.
- ✓Camera → OCR → brand or salt match → advice card
- ✓Indian brand database: Dolo, Crocin, Calpol and more
- ✓Salt-level fallback so generics are recognised
- ✓Node/Express matching service, Firebase for sync
Client work: systems shipped end to end
Built for other people — architecture to deployment. This is the engineering muscle behind everything above.
Artboard Studio
Portfolio site for a Lucknow brand-design studio. Seven case studies with bilingual Devanagari lockups, a Resend-backed contact form, and a build-time check that hides any section whose real artwork hasn’t landed yet — so the site never ships an empty frame.
Paavani Medical Centre
Appointment booking system for a respiratory clinic. Patients get instant WhatsApp confirmations via Twilio; doctors receive real-time email alerts via SendGrid. Bookings stored in Supabase.
Outcome
Replaced manual phone bookings for a 200+ patient/month clinic.
Edscape
LMS and course delivery platform with video content, assessments, progress tracking and instructor dashboards. Multi-tenant architecture.
Outcome
Live platform with active courses and enrolled cohorts.
Founder
Abhishek Singh
Six years building production systems across healthcare, SaaS and consumer apps. Founded Sage & Stone in 2026 to build products for India's small sellers — starting with ChatKhata. Builds in public, one shipped feature at a time.
📍 Lucknow, India · ✉️ abhishek@sageandstone.in
Want to talk?
Sellers, partners, press — we read everything.