An open-source frontend for the Google Play Store that doesn't require Google Services.
In older versions of APKPure (like v3.17.20), the app acts as a guardian. It checks the "fingerprint" (signature) of the app you are downloading against the original developer's signature. If a hacker has tampered with the APK to inject malware, the signature will change, and APKPure will warn you before you install it. apkpure v3.17.20 download