iBuildApp's app-builder platform, support service, templates and solutions, along with no limit for creating any number of apps is absolutely free.
Our single-app paid plans cover publishing and server maintenance costs so that your apps are online and hosted with no interruptions. Corporate, Reseller, and Enterprise solutions exist for powerful industries and organizations looking to create versatile apps with App Store distribution benefits and User management.
To publish the apps on iTunes or Google Play does require developer accounts with those services.
More information in regards to those topics can be found here: