If you are looking for the official and most secure version of the app, you can find it through verified platforms:

Downloading a "cracked" or "crk" APK version of —a medical decision support app—is generally not recommended. Using modified APKs from unofficial sources can expose your device to malware, security vulnerabilities, and data privacy risks.

For iOS users, the app is available on the Apple App Store.

If you must use an APK, platforms like Uptodown often host various versions of the app, though the official store is always the safest option.