> For the complete documentation index, see [llms.txt](https://docs.onside.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.onside.io/sdk/advanced-and-tooling/onsidekit-lite.md).

# OnsideKit vs OnsideKitLite

OnsideKitLite is the SDK without the PassKit dependency (no Apple Pay), for apps that cannot include PassKit.

OnsideKit ships as two products, built from the same source:

<table><thead><tr><th width="200">Product</th><th>Apple Pay / PassKit</th><th>Use it when</th></tr></thead><tbody><tr><td><strong>OnsideKit</strong></td><td>Included</td><td>The default. Use it unless you have a reason not to.</td></tr><tr><td><strong>OnsideKitLite</strong></td><td>Excluded</td><td>Your app cannot include the PassKit framework.</td></tr></tbody></table>

The two are **identical apart from Apple Pay**. Bank-card payments, login, products, the payment queue, attribution, event tracking, and the JS bridge are all present in both.

## What changes in Lite

* **No Apple Pay.** Regular Onside accounts can use bank cards; the Apple Pay option never appears.
* **No purchases for external profiles.** Consumable purchases require Apple Pay and fail with `.applePayRequired` in Lite. Subscriptions and non-consumables fail with `.notSupportedForExternalLogin`. External login itself remains available. Use the full build for [external-account purchases](/sdk/core-concepts/external-login.md).
* **No `applePayMerchantIdentifier`.** This API exists only in the full build. Referencing `Onside.applePayMerchantIdentifier` in an app that links OnsideKitLite is a **compile error**.

Everything else — the `Onside` API, models, delegates, and observers — is the same.

## Choosing and importing

The capability is fixed by which product you add as a dependency; there is no runtime or compile flag in your app. Add **OnsideKit** or **OnsideKitLite** as described in [Installation](/sdk/getting-started/installation.md), then import the matching module:

```swift
import OnsideKit        // full build
// or
import OnsideKitLite    // no PassKit / no Apple Pay
```

In both cases you use the same `Onside` API (minus `applePayMerchantIdentifier` in Lite).

{% hint style="info" %}
If you need Apple Pay later, switch the dependency to the full **OnsideKit** product and configure it as described in [Apple Pay](/sdk/purchasing/apple-pay.md).
{% endhint %}


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