> For the complete documentation index, see [llms.txt](https://developers.mtpelerin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.mtpelerin.com/introduction.md).

# Introduction

## Welcome to the ultimate crypto-fiat gateway!

Looking for the best way to let your users buy, swap or cash-out cryptocurrencies, and earn from it? You've come to the right place!

<figure><img src="/files/EteE6goYy9iytNft8XV1" alt="Mt Pelerin on/off-ramp widget" width="465"><figcaption><p>The main scree of our widget, you can <a href="https://www.mtpelerin.com/buy-crypto">try it here</a>!</p></figcaption></figure>

Our crypto-fiat exchange service has been running continuously since 2020, with countless upgrades and improvements. You can say it's been properly battle-tested!

You can easily integrate this service into your own web or mobile app, with different approaches and plenty of customization possibilities to match your needs and branding as much as possible:

💻 **Web integration**

* [Direct link](/integration-guides/integration-methods/widget.md#direct-link)
* [iFrame](/integration-guides/integration-methods/widget.md#iframe)
* [Popup / modal window](/integration-guides/integration-methods/widget.md#popup-modal)

📱 **Mobile integration**

* [React Native](/integration-guides/integration-methods/mobile-sdk.md)

🧑‍💻 **API integration**

* [API integration](/integration-guides/integration-methods/api.md)

Before we dive in, we invite you to discover why our service is the best. Let's get started! 👇

### A few numbers first

* 🕺 180k+ users
* 💰 More than $1 billion transferred
* 🌍 Successfully cashed out funds to 70+ different countries
* 🏦 Successfully cashed out funds to 500+ different banks