Download-good-reader-v5-1177-unk-64bit-os110-ok14-user-hidden-bfi-ipa

: Suggests this version may have certain tracking or user-identifying features stripped out.

To understand what this specific file contains, we can look at the individual tags within the name:

If you are looking for a reliable way to manage and annotate documents, it is highly recommended to use the official version. : Suggests this version may have certain tracking

: If you are a developer or power user testing your own builds, tools like AltStore or Sideloadly are the standard methods for installing IPA files safely using your own Apple ID.

: Likely a verification tag from the uploader indicating the file was tested and works on iOS 14. : Likely a verification tag from the uploader

: If you have an older device that cannot run the latest version, the App Store will often allow you to download the "last compatible version" if you have previously purchased the app.

: Modified apps can contain malware, keyloggers, or spyware that can steal your Apple ID, passwords, or personal data. : You can find the legitimate, safe version

: You can find the legitimate, safe version of GoodReader on the App Store.