One Integration for Auth & Fraud.
One user. Every checkpoint.
From the first tap to every transaction, OTPless handles identity invisibly - without an OTP in sight.
Built for the moments that move metrics.
Real-world identity stacks running in production, across India's category leaders.
Nine products. One integration.
Every identity moment, shipped as part of one integration - from carrier verification to fraud signals.
In a blink. Zero-tap silent auth.
SNA verifies SIM possession in the background by talking directly to the carrier. No OTP screen. No SMS to fetch. No "didn't receive a code" panic. The user does nothing — and they're authenticated.
Enter your
mobile number
Enter your
mobile number
You can choose a phone number that's assigned to your phone, and Google will share it only with this app.
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+91 98765 43210
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+91 91060 18026
One API. Every channel, picked in real time.
Mobile Auth picks the channel that's actually working right now — by success rate, latency, and operator health per country. No priority lists. No retry logic. Just the fastest path to a verified user.
- ⚡ Silent Network Auth —
- ↳ WhatsApp —
- ↳ SMS / RCS —
- ↳ Voice —
await otpless.verify({ phone: '919899038845' })
Verify the user. Trust the device.
Mobile Auth confirms who is logging in. Device Intelligence tells you what they're logging in from — every login carries an allow, step-up, or block verdict, scored in under 200ms.
The numbers our customers ship with.
* Metrics measured against pre-OTPless baselines.
"From talks to go live in 24 hours. We evaluated multiple vendors before going with OTPless - 4–5% higher success rates compared to others, which at our scale is significant. Their team was in our office throughout integration. Support was instant."
"OTPless completely transformed how users log in at Meesho — fast, effortless, and frustration-free. Over 25 million seamless logins every month and a 10% boost in conversion."
"Astrotalk partnered with OTPless to simplify login, reduce operational complexity, and support international scale. Zero-touch flows and intelligent routing delivered measurable impact on conversion, cost, and experience."
"OTPless made login effortless for our users and simpler for our team. WhatsApp zero-tap and smart fallback boosted conversions and cut our international auth costs by 20×."
One call. Every channel routed for you.
The platform decides the channel by operator health, country, and device — so your code stays the same wherever it ships.
import com.otpless.main.OtplessManager import com.otpless.dto.HeadlessRequest import com.otpless.dto.HeadlessResponse // 1. Init the OTPLESS view in your sign-in activity private val otplessView = OtplessManager .getInstance().getOtplessView(this) // 2. Build the verify request — just a phone number val request = HeadlessRequest() request.setPhoneNumber("91", "7069914791") // 3. Start headless auth — SDK picks the best channel otplessView.startHeadless(request, ::onHeadlessCallback) private fun onHeadlessCallback(res: HeadlessResponse) { if (res.statusCode == 200 && res.responseType == "ONETAP") { val token = res.response.optString("token") // → verify token on your backend } }
Common questions.
What is OTPless?
How is OTPless different from SMS OTP?
Which platforms does OTPless support?
Is OTPless compliant and secure?
Ready to ship the identity layer your product deserves?
Book 30 minutes — we'll show you SNA on your number and ship a working integration before the call ends.















