If you are an advanced Android user or a developer and flash any Custom ROMs on your Android smartphone, then you should know about the GApps package. It’s a custom ROM specific Google Apps package which offers all the useful and necessary Google stock apps into the Custom ROM. The custom firmware developers don’t include the preloaded Google apps or services into the system. Now, the Android 10 is official and has been rolling out to a few devices. Meanwhile, some of the Custom AOSP ROM developers also developing Android 10 AOSP ROMs for particular device models. Therefore, you need to download Android 10 Gapps which will work on any Android 10 Custom ROM.
After installing a Custom ROM based on Android OS, you also need to flash GApps package on your device. Therefore, you can easily use all the Google apps and services including Google Play and framework. If the Gapps not available in Google’s Android OS, the user can’t use their devices properly. Only the China-based ROMs are useful without Google Apps in China region only.
The GApps package basically includes the Google Play Store, Google Play Services, Gmail, Google Calendar, Clock, Maps, Photos, Drive, Google Framework, etc. If your device has some of these applications, then your device is already running GApps package. Most of the Custom ROMs (except Pixel Experience ROM) doesn’t come with any GApps package. You have to flash the file manually via a Custom Recovery after flashing the Firmware file. That’s necessary.
Android 10