Co-parenting,
without the conflict.
Shared calendar, expenses, and court-admissible messaging for Indian and NRI parents after separation. Your records, safe in India. Your co-parent, always in the loop.
No credit card required · Works in your browser · Cancel anytime
Everything in one place
Built specifically for Indian co-parents — not a translation of a Western app.
Shared Calendar
Custody schedules, school events, CBSE/ICSE holidays. Color-coded by parent.
Expense Splitting
Log costs, split 50/50 or custom, send UPI payment requests via WhatsApp.
Court-Grade Messages
Hash-chained, non-deletable. Admissible under Indian Evidence Act Section 65B.
Child Info Vault
Health records, vaccinations, school info, emergency contacts — always accessible.
Solo Mode
Use 1Saath without your co-parent. They respond via WhatsApp — no account needed.
Built for India
OTP login, UPI, WhatsApp, Indian courts, DPDP Act compliant. All data in Mumbai.
Every entry, sealed in a chain.
Each message, expense, and calendar change is cryptographically linked to the one before it. Change anything afterwards, and the whole chain shows it.
Your data never leaves India
Every record is stored exclusively in AWS Mumbai (ap-south-1). Nothing is deleted when you stop using 1Saath — your history is yours, forever.
Built for Indian courts
Messages and records export with a Section 63 (Bharatiya Sakshya Adhiniyam) / Section 65B certificate — the format Indian family courts expect.
DPDP Act 2023 compliant
OTP-only login, no passwords to leak. Your co-parent never sees your phone number, and neither parent can edit or delete the shared record.
Getting Started
Start alone. Invite your co-parent when you're ready.
Create Your Account
Sign up free in your browser with just your phone number. OTP login — no password needed.
Set Up Your Child
Add name, DOB, school, and health info in under 2 minutes.
Start Co-Parenting
Use Solo Mode immediately or invite your co-parent via WhatsApp.
From parents who use 1Saath
The calendar and expense features stopped 90% of our arguments. Everything is documented now.
My co-parent doesn't use 1Saath but he gets my reminders on WhatsApp and actually responds.
I showed the message export to our lawyer. She said it was the clearest co-parenting record she'd seen.
One price. Both parents. Every feature.
No feature gating. No per-user pricing. One family, one subscription.
No credit card required
From the Parenting Resources
View all →Frequently asked questions
Does my co-parent need a 1Saath account?
No. In Solo Mode, you use 1Saath alone. Your co-parent gets reminders and requests via WhatsApp or SMS and can respond from a web link — no account needed.
Do I need to install anything?
No. 1Saath runs entirely in your browser, on any phone or computer. All records are stored on 1Saath servers in India — log in from any device and everything is intact.
Is 1Saath admissible in Indian courts?
Yes. Messages are SHA-256 hash-chained and exportable in a format compliant with IT Act Section 65B for electronic evidence.
Who pays for the subscription?
One parent pays ₹3,999/year and both parents — plus up to 2 family members each — get full access.