What are some alternatives?
When comparing SimPholders and Bitrise, you can also consider the following products
IBM MobileFirst - IBM MobileFirst provides enterprise mobility solutions.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Evothings - Evothings is a mobile application enabler for the Internet of Things (IoT) industry
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
B4X - Cross platform development tools for native iOS, Android, desktop and server applications.
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.