Most cracked apps require you to bypass Apple’s built-in security, such as "sandboxing." Once an app is "unsandboxed," it can potentially access data from other apps on your device.
That being said, I found some online sources offering Astropad Standard IPA cracked for iOS, free download. However, I strongly advise against downloading or using these cracked versions, as they may:
The most straightforward way to get Astropad Standard is to purchase it directly from the App Store on your iOS device.