Apphud can send subscription events into Amplitude to enrich your Amplitude user profiles with subscription revenue. This is useful for seeing all events and revenue that occur for your app, even when it's not active for a period of time.

## About Apphud

[Apphud](https://apphud.com/) is a revenue data platform designed to help mobile app teams scale results and grow faster by making data-driven decisions. Apphud boosts in-app subscriptions growth by helping you deliver web-to-app ads and centralizing app revenue data for analysis.


## Set up the integration

{% callout type="tip" %}
For help with this integration, contact the [Apphud Support team](https://apphud.com/contact).
{% /callout %}

### Prerequisites

Before you can add this integration, you must do the following:

- Add the [Apphud SDK](https://docs.apphud.com/docs/sdk-integration).
- Add the [Amplitude SDK](/docs/sdks).
- Match the user IDs between Apphud and Amplitude. Refer to the [Apphud documentation](https://docs.apphud.com/docs/amplitude#match-user-ids) for help with this step.

### Amplitude setup

Copy your Amplitude API keys for both your test and production projects.

There are no other setup steps in Amplitude.

### Apphud setup

Refer to the detailed instructions for this integration in the [Apphud documentation](https://docs.apphud.com/docs/amplitude).