> ## Documentation Index
> Fetch the complete documentation index at: https://docs.alignet.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Alignet SDK v2.2

> Integrate card payments into Android and iOS applications.

Alignet SDK processes debit and credit card payments inside a mobile application. Version 2.2 uses the same request and response model on Android and iOS, while installation and initialization are platform-specific.

<CardGroup cols={2}>
  <Card title="Android" icon="android" href="/en/sdk/android">
    Integrate the AAR libraries with Gradle and initialize the SDK in Kotlin.
  </Card>

  <Card title="iOS" icon="apple" href="/en/sdk/ios">
    Add the XCFrameworks in Xcode and initialize the SDK in Swift.
  </Card>
</CardGroup>

## Shared content

<CardGroup cols={2}>
  <Card title="Concepts and parameters" icon="diagram-project" href="/en/sdk/common-concepts">
    Shared flow, environments, and input objects.
  </Card>

  <Card title="Responses and errors" icon="circle-exclamation" href="/en/sdk/responses-and-errors">
    Internal actions, final response, and SDK codes.
  </Card>
</CardGroup>

## Version summary

| Version | Main changes                                                                                                       |
| ------- | ------------------------------------------------------------------------------------------------------------------ |
| 2.0     | Gateway redesign, configurable colors and logo, 3DS, Visa/Mastercard animations, and `PaymeInternalAction` events. |
| 2.1     | 3DS 2.2 authentication and bug fixes.                                                                              |
| 2.2     | English interface support through `locale`.                                                                        |

<Note>
  The source documentation identifies v2.2 as the current version published on May 29, 2025.
</Note>

[Official Android guide](https://docs.alignet.com/en/sdk/v2.2/Android/) · [Official iOS guide](https://docs.alignet.com/en/sdk/v2.2/iOS/)