Did you know that 56% of users uninstall mobile app within just 7 days of installation? Reasons are very simple: users prefer apps that are up-to-date and “require less space, load faster and are stable," says MoEngage study. The answer to these issues may be regular maintenance of an app. Have you heard about it before? Probably yes, but surprisingly, a significant percentage of customers totally forget about this phase and do not include an app maintenance costs in the software development plan.