Since Apple does not allow third-party app stores (outside of the official one) on non-jailbroken devices by default, you cannot simply visit a website and download an app like you might on an Android phone. The IPA file is required to manually install the app via a computer or a signing service.

If you cannot find a working or face persistent installation issues, consider these free alternatives that also require sideloading:

Subreddits such as r/sideloaded or r/AppValley often pin the latest working links. These communities also report broken versions and malicious files.

The process is straightforward once you understand sideloading. Here is a quick recap: