Cut SMS OTP Costs
by 50–90%

WhatsApp OTP with automatic SMS fallback. Immediate savings, zero friction. Watch costs approach zero as users adopt biometric login.

Calculate Your Savings
The Problem

Your current options fall short

SMS OTP is a tax on growth. Every new user costs you money.
The obvious fixes don't actually solve it.
Build In-House
Full control, but expensive engineering time and ongoing maintenance. Biometrics and passkeys are hard to build right, and the spec keeps changing.
Costly & slow
Switch to a Cheaper SMS Gateway
Simple swap of API keys, but you still pay per OTP. Costs still scale linearly with users. No fraud protection, and cheaper gateways often have worse delivery rates.
Still scales with growth
Add a Security Product
Bot and fraud protection, but high cost, separate from auth, and more integration work. Often overkill for SMS abuse specifically.
High cost, more complexity
Savings Calculator

See your savings in real time

Adjust the inputs below to calculate your projected cost reduction using real Twilio SMS pricing data.

Your Details

OTPs / mo
90%

Users without WhatsApp automatically receive SMS fallback

Your Projected Savings

Annual Savings
$0
—% savings vs. SMS-only
0% 0% saved 100%
Current SMS cost / mo $0
With Authgear / mo $0
Monthly Savings
$0
Month 6+ Cost
$0 / mo
After 30% of returning users adopt biometric login — reducing OTPs sent by 30%
Start Saving Now — Free to Get Started →
Why Authgear

The complete solution that scales
with you

Not just cheaper OTPs: a full identity platform that cuts costs while improving security and UX.
Immediate Cost Reduction of Up to 90%
WhatsApp OTP with automatic SMS fallback. WhatsApp costs a fraction of SMS. Users with WhatsApp get their code there. Everyone else gets SMS. No friction, instant savings.
Costs Approach Zero Over Time
Mobile biometric login and passkeys mean returning users authenticate with face or fingerprint. No OTP sent. The longer your users stay, the fewer OTPs you send.
No Surprise Fraud Bills
SMS pumping attacks can generate thousands of fraudulent OTPs overnight. Authgear's device fingerprinting and risk-scoring block them before they hit your bill.
Single Sign-On Across Your Apps
Users log in once and stay logged in across all your properties. Launch companion apps without login friction. One identity, one consent, one customer view.
Enterprise-Grade Security Out of the Box
User audit logs, account lockout, rate limiting, breach detection, and OWASP best practices, already built and maintained by us. Your team ships features instead.
Works in 219 Countries
WhatsApp has 2+ billion users globally. 215 of 219 markets show savings, from 33% in Germany to 94% in Egypt and 93% in Nigeria. Your global expansion doesn't have to cost more.

TRUSTED BY

Chosen by enterprises across industries

From transport infrastructure to global hospitality. Teams that can't afford downtime or surprise bills rely on Authgear.
Read customer story

Ready to cut your SMS costs?

Get started today! Free trials available.
Valid number
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Preferences

Privacy is important to us, so you have the option of disabling certain types of storage that may not be necessary for the basic functioning of the website. Blocking categories may impact your experience on the website.

Accept all cookies

These items are required to enable basic website functionality.

Always active

These items are used to deliver advertising that is more relevant to you and your interests.

These items allow the website to remember choices you make (such as your user name, language, or the region you are in) and provide enhanced, more personal features.

These items help the website operator understand how its website performs, how visitors interact with the site, and whether there may be technical issues.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.