Gallery Go was introduced earlier today during a special event held by Google Nigeria. This app is optimized for Android Go devices and focuses on offline capabilities while offering some machine learning-based capabilities already present in Google Photos. Gallery Go has only 10 MB in size and works on devices powered by Android 8.1 Oreo or later.
https://www.notebookcheck.net/Google-Photos-gets-lighter-as-Gallery-Go-an-Android-Go-app-designed-for-offline-use.428126.0.html