Mobile apps have to be regularly monitored you cannot just create a app and expect it to run smoothly without any support and maintenance. The Application should be regularly refined, fixed and updated to retain the performance and user base to the optimum.
In the support and maintenance phase we need to cover end to end maintenance which includes various stages from fixing bugs, maintaining the app Updates, implementing new features, Maintaining the code, adding features and so on. Any app needs to be serviced regularly for the sake of its survival.
