Aurora is a FOSS Play Store client that does not require a Google Account to download directly from Play Store. However you can login with your Google Account to download your already paid apps!
Ranked in these QuestionsQuestion Ranking
Pro Anonymous login
Get apps directly from Google Play Store without using a Google Account.
Pro Spoof your device
When your phone supposedly doesn't work with this app you can spoof your phone as another device and download it anyway, often the app works as intended.
Pro See app statistics
Can view general privacy-related usage of the app eg. contains apps, uses GPS, etc.
Pro Spoof country or language
Get country or language restricted apps anyways.
Pro Works on Android TV
Pro Option keep or delete APK file after installation
Con Violates Google Play TOS
Violates §3.3 of Google Play Terms of Service, which can lead to an account ban if you use with your regular Google account.