Bulletproof OTP Delivery for Modern Apps.
Secure, lightning-fast authentication via SMS and WhatsApp. Enterprise-grade reliability with sub-second delivery to 200+ customers.
SecureOTP
via SMS · just now
Your verification code
Everything you need for bulletproof auth
Robust authentication is the first line of defense. We ensure legitimate users get in instantly while keeping bad actors out.
Bank-Grade Security
End-to-end encryption and dynamic routing ensure your codes are never intercepted or delayed.
Sub-Second Delivery
Optimized global carrier networks guarantee delivery in milliseconds, reducing user drop-off.
Real-time Insights
Monitor delivery rates, latency, and conversion funnels directly from your dashboard.
Built to grow with you
Focus on your product while we handle the complexities of secure delivery.
Integrate in minutes
Drop in our SDK and start authenticating users seamlessly. Official libraries for Node.js, Python, Go, Java, Ruby, and PHP — or use our REST API directly.
View documentation arrow_forwardconst smsAPI = 'https://auth.applicanity.com/api/v1/otp/sms/send';
const res = await fetch(smsAPI, {
method: 'POST',
headers: {
Authorization: `Bearer ${process.env.SECUREOTP_KEY}`,
'Content-Type': 'application/json',
},
body: JSON.stringify({ phone: '+628123456789' }),
})
// { message: '...', expiresAt: '...' }Pay as you go
No upfront costs or monthly commitments. Scale your usage as you grow. Transparent pricing — you only pay for successful deliveries.
See pricing arrow_forwardMonthly spend
Global reach
Reliable delivery to over 200 customers via local carrier partnerships. Ensure your international users receive their codes instantly, wherever they are.
Active regions
200+
Customers
50+
Carriers
24/7
Monitoring
Up and running in minutes
A seamless flow from integration to instant verification.
Integrate our API
Add our lightweight SDK to your backend in under 5 minutes with a single API key.
User requests OTP
User enters their phone number. We handle routing, retries, and fallback channels automatically.
Instant verification
The secure OTP is delivered and verified. Your user is authenticated in under a second.
Simple, transparent pricing
Pay only for what you use. No hidden fees, no setup costs, no contracts.
Starter
Perfect for new applications.
- check_circlefrom IDR 250/message
- check_circleSMS & WhatsApp support
- check_circleStandard API limits
- check_circleCommunity support
- check_circleBasic analytics
Pro
For scaling businesses.
- check_circlefrom IDR 200/message
- check_circleDedicated WhatsApp number
- check_circleCS priority support
- check_circleAdvanced analytics
- check_circleNotification alerts
Common questions
What programming languages do you support?expand_more
How reliable is message delivery?expand_more
Are there any hidden setup fees?expand_more
What happens if I run out of credits?expand_more
Can the same OTP code be used more than once?expand_more
What is the difference between test and live API keys?expand_more
Ready to secure your users?
Join thousands of developers who trust SecureOTP to deliver authentication codes instantly and reliably.