Build a simple app that will play a series of audio files in a particular order (where some files are repeated at intervals)--from start to finish. As each audio file plays a graphical display will provide visual feedback to the user as the files are played.
NOTE: This app will be published for users globally. So break down of cost should include hosting and publishing costs.
The preferred platform is Android but I'd like to know whether a platform independent app with low support costs is feasible.
Note: since this is a simple app where a standard framework can be reused, I expect it to take less time and resources from experience.
RESPONSE delay: I'll be checking proposals and will respond within a few hours time. Please bear with me.