When should you redesign an app?
If it's an existing app that's already popular with users, any changes made to the design or content should be done in very small, incremental, strategic chunks through A/B testing. If your app is experiencing serious issues with user acquisition or retention, then a redesign is probably necessary.
What is UX redesign?
The UX redesign involves redesigning your product in terms of experience, visual interface, and feature-set. The UX redesign helps to improve your product experience in different ways.