I do not think I can recommend Appcelerator at this point due to the issues with Appcelerator studio, lack of good debugging support, lack of thorough documentation and forums and the additional cost overhead of licenses. The pros are just that it allows for cross-platform development. However, Cordova does a much better job of it and excels at places where Appcelerator currently struggles
I think it's well suited if you have data available and you want to create customized solutions for different types of users. Mendix is very good at doing that. It allows you to do it very easily. So those are good use cases.
It is very hard to debug your code. Breakpoints never worked for us even with the latest Appcelerator Studio and we had to rely on log statements to debug.
There is a need to purchase licenses from Appcelerator to run the code on a device or for creating iOS distribution builds. This is an additional cost when you have already paid for Apple developer program for precisely these things.
If things are broken due to lack to support between Appcelerator and a new iOS version, you pretty much have to rely on a new version release from Appcelerator for the issue to be fixed.
It is difficult to create enterprise distribution builds where the distribution certificate is owned by your organization's team and you only have a development certificate for the same.
The forums on developer.appcelerator.com are seldom helpful. It is hard to find solutions for issues even on other forums like stack overflow.
Drawing from my hands-on experience with Mendix, I can confidently state that the platform aptly fulfills our needs for web application development. Mendix stands out by providing a marketplace replete with pre-built templates and widgets. This feature empowers users to leverage readily available components, hastening the development process and contributing to an enhanced overall usability of the platform.
I think their support system is really professional. They answer question quickly and accurately. They have a ticket system that allows to track the current status of a request. The only point for imporvement is a way for me to postpone an answer. Tickets get closed automatically after some time. I feel that the user should have the option to change to an on hold status, allowing for more time to respond to a ticket.
Appcelerator makes you write a structured code whereas Cordova just packages your code and you are free to structure it. Appcelerator bridges your javascript code with native code and that would make it run faster than javascript code in Cordova apps. However, with recent mobile browsers, you would hardly notice any performance deterioration with Cordova apps. Appcelerator struggles with issues related to its IDE, debugging, documentation and forums and additional costs. Cordova makes it much more simpler to develop cross-platform apps with better developer support, debugging support, documentation and forums minus the additional costs.
Because most of our apps work closely with our main system (ERP) and other tools, we went with Mendix. It's good at easily connecting with lots of different systems, which is exactly what we need. Another thing we like about it is that it can handle growth well, and its pricing is straightforward and easy to understand.
We were able to build and deploy a mobile app with Appcelerator. However, the platform still has issues and does not cover our needs as much as some of its competitor like cordova does.
Without Mendix we could not have been where we are now. A development platform as Mendix can make the difference in a constantly changing environment.
Upgrading to newer versions of Mendix is a breeze when you stay within a main version (e.g. M6.x to Mx6.x+1) and even between versions (Mx5 to Mx6) most of the time it is no problem at all and there are only minor changes needed to upgrade.
Learning Mendix is simple. Just start playing with it and see for yourself how easy it is and feel the joy of developing applications.