Passwordless/OTPless Indian authentication
Fast Secured Free.
Apna Auth lets users verify with a three-tap WhatsApp button flow instead of entering OTPs, cutting SMS costs by ~99% and improving security and conversion.
Why Apna Auth?
Apna Auth is a passwordless Indian authentication layer that removes OTP entry completely. Users verify on WhatsApp; you get a secure token, a verified number and dramatically lower authentication costs.
Problem
High OTP cost
Companies spend crores every year sending millions of OTP SMS messages. For global users, international OTPs can cost ~10× more and still fail to arrive.
Apna Auth shifts verification to WhatsApp, where you control volume and cost.
Operational overload
Teams juggle SMS vendors, DLT registration, sender IDs, and template approvals. Every change in copy becomes a compliance ticket.
With Apna Auth, you integrate once and let the protocol evolve without breaking flows.
Weak security & UX
OTPs sit as plain text in the SMS inbox, vulnerable to malicious apps. During peak hours, OTP delays cause thousands of failed logins and abandoned sessions.
Apna Auth returns an encrypted, device-bound session with a user-initiated flow.
Benefits of OTPless Login with Apna Auth
Designed for product, engineering and growth teams that want better conversions, lower costs and stronger security – without rewriting their entire stack.
Secure verification → genuine leads only
Tap-based verification ties the process to a real device and real WhatsApp account, eliminating many fake signups and bot-generated leads.
You get cleaner data, higher-quality funnels and less spam.
Instant login → higher conversions
Users verify in under ~3 seconds by tapping buttons instead of waiting for OTP delivery and typing 6-digit codes.
Faster journeys reduce drop-offs across signup, login and checkout.
Lower cost
Apna Auth replaces high-cost SMS OTPs with low-cost bot messages and template flows on WhatsApp (and optionally Telegram or in-app channels).
Save up to ~99% on OTP-related costs, especially for international users.
OTP vs Apna Auth
On a 2×2 of Security and User Experience, SMS OTP lives in the low-security, low-UX quadrant. Apna Auth aims for high security and a simple three-tap experience.
| Traditional OTP (SMS) | Apna Auth (OTPless) | |
|---|---|---|
| Security | OTP in plain text; vulnerable to malware, phishing and SIM-swap. | Encrypted, device-bound sessions; user-initiated verification. |
| User experience | Code copying, app switching, frequent failures → low NPS. | Three-tap WhatsApp flow, no manual input → high NPS. |
| Conversion | Low completion rate; drop-offs at OTP step. | Higher completion with almost zero OTP friction. |
| Cost & maintenance | High SMS spends, DLT overhead, constant template management. | Low messaging cost, single protocol integration, less vendor juggling. |
WhatsApp Login – Results You Can Achieve
Case studies of OTPless WhatsApp login show strong uplifts across conversion, security and user happiness – the benchmarks Apna Auth aspires to match in production.
How Apna Auth Works
Two main modes – Sign-up and Sign-in – share a single, simple operational flow: Entry point → WhatsApp authentication → Exit point back into your app.
Sign-up
When customers are creating a new account or interacting with you for the very first time, Apna Auth ensures the mobile number is verified up front. No fake or disposable numbers enter your system.
Sign-in
Returning customers simply tap the button, verify via WhatsApp and are signed into their existing account – without remembering passwords or waiting for OTPs.
Add “Login with WhatsApp”
Add the Apna Auth button to your app or website at the points where users sign up, sign in, or verify their number (e.g. checkout, profile, lead forms).
User sends a pre-filled message
Tapping the button opens WhatsApp with a pre-filled message to a verified business number. The user sends it and receives a verification link back. When they tap the link, Apna Auth creates an encrypted, device-bound session.
Redirect into the right journey
After success, the user is redirected to your app with a signed token and verified mobile number.
- New user: redirect to signup journey.
- Existing user: restore their account session.
- Error: show a friendly retry / fallback.
Platforms Supported
Integrate once across your website and mobile apps. The identity and verification logic stay consistent everywhere.
Website
Use our JavaScript SDK within any framework – HTML, React, Vue, Next.js and more.
Android app
Deep link to WhatsApp and handle callback URLs in your Android application.
iOS app
Use universal links to bring users back into your iOS app after verification.
Getting Started – Go Live in Minutes
You mostly copy-paste SDK snippets and wire one API for user details. No heavy migration or complex infrastructure changes.
Copy / Paste SDK
Add Apna Auth SDK on your signup/signin pages – web or mobile.
Add WhatsApp Login button
Place the pre-built “Login with WhatsApp” button where you currently ask for OTP.
Wire 1 API for user details
On callback, call a single Apna Auth API to get verified number & token, then create or restore the user in your system.
Identify · Authenticate · Engage
The same verified WhatsApp identity becomes the foundation for identification, authentication and long-term engagement – less intrusive, secure and meaningful.
IDENTIFY
Less intrusive, easy, simple.
Capture clean, verified mobile numbers without forcing users through long forms.
AUTHENTICATE
Secured, end-to-end encrypted.
Use Apna Auth sessions as a strong, user-initiated factor instead of SMS codes.
ENGAGE
User-initiated, consensual, personalised.
Send contextual messages and journeys via WhatsApp to users who already trust the channel.