yes you can use I can give you some starting documents
https://learn.microsoft.com/en-us/appcenter/quickstarts/ios/overview
https://learn.microsoft.com/en-us/appcenter/build/ios/
However, it's important to note that your iOS application will not connect directly to the Azure SQL Server. Instead, it will typically connect through a middleware service such as Azure App Service.
Azure provides a number of services that can be used as this middleware layer, including Azure App Service and Azure Functions. These services can connect to your Azure SQL Database, perform queries, and return the results in a format that's easy for your iOS app to handle.