Glide allows you to quickly create mobile and web apps based on Google Sheets, Airtable or Excel. Glide also offers its own database: Glide Tables. There is also the option to use Big Tables for large amounts of data.
Glide takes over most of the UI/UX design and translates spreadsheets into functioning apps within seconds. The layout of the mobile app can be customized as desired. Glide also offers the integration of user registrations, payment functions and third-party tools such as Zapier, Make or Google Analytics. Glide also provides a large templatelibrary in which you can choose from various pre-constructed application examples.
The company typeguard Inc. is based in the USA and presumably also stores all data there. The use of Glide is risky from an EU perspective after the Privacy Shield agreement was overturned.
Further information on Glide's data protection:
https://www.glideapps.com/privacy