# Introduction to ReOTP

Learn how to integrate WhatsApp and Telegram OTP verification into your app.

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**ReOTP** provides a simple, direct API that lets you build your own User Interface (UI) exactly how you want it. We don't force any pre-built widgets on you. Instead, you get full freedom to create a custom User Experience (UX) that fits your visual identity.

### Why ReOTP?
- **Design Freedom:** Complete control over your verification UI and user flow.
- **Secure & Reliable:** Built-in rate limiting and anti-spam protection against AIT Fraud.
- **Massive Savings:** Cut out expensive SMS costs by using instant messaging channels. To understand the economics, visit [Why We Are Here (Cost Savings)](/why-we-are-here).
- **Preferred Channels:** WhatsApp and Telegram verification with smart, demand-driven connection handling.