> For the complete documentation index, see [llms.txt](https://doc.appflow.ai/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.appflow.ai/docs/sdk-set-up-instructions/ios-sdk/visual-constructor.md).

# Visual constructor

Test out the best Paywalls and Welcome pages of your iOS Apps with Appflow\.ai Visual Constructor

***

Test out the best Paywalls and Welcome pages of your iOS Apps with Appflow\.ai Visual Constructor.

### **Paywall**

The SDK provides a shortcut for displaying paid products. After setting the style in Appflow\.ai plaltform, you can display it by call method:

```swift
Appflow.shared.loadPaywallToPurachase {[weak self] result, msg in
    guard let `self` = self else { return }
    if result == false {
        //if false , Developers can jump to the native payment page
    }
}
```

### **Welcome Page**

The SDK adds the View of AppflowWelcomePage. If the user needs to start the welcome page, the configuration of the page needs to be configured on the Appflow\.ai platform. The welcome page loading method can be referred to as follows:

```swift
// loading WelcomPage
func loadLaunchScreenView() {
    // customized launch screen
    if let window = self.window {
        window.backgroundColor = .white
        let welcomPageView = AppflowWelcomePage(frame: window.bounds)
        welcomPageView.waitingTime = 6
        self.window?.makeKeyAndVisible()
        self.window?.addSubview(welcomPageView)
        self.window?.bringSubviewToFront(welcomPageView)
    }
}
```

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

It may take time to load the welcome page for the first time. The default loading waiting time is the 30s. Users can set waiting time according to their needs.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://doc.appflow.ai/docs/sdk-set-up-instructions/ios-sdk/visual-constructor.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.