What are some alternatives?
When comparing zeroqode and Adalo, you can also consider the following products
Codefreebnb - Airbnb clone. Written with not one line of code
Kodika.io - Build powerful iOS apps on your iPad with no code.
Azure App Service - App Service is a cloud platform to build powerful web and mobile apps that connect to data anywhere, in the cloud or on-premises
Lightwell - App creation platform for creatives.
Retool - Build custom internal tools in minutes.
App Press - App Press provides tools to create and publish apps for iOS and Android.