First of all, if the app is not aligned with the client's expectations, there's obviously work to do. We need to make sure we understand the client's expectations and document the feedback provided. Ideally, considering the mobile app may have made considerable progress, we wouldn't want to abruptly change the designs either. This is where we need to find a middle ground with the client. I would suggest starting with the non-negotiable changes, validating the current functionalities, and assessing how these changes will impact timing, resources, and the functionalities already built. Then, the rest of the changes can be handled in a small backlog for prioritization and analysis, since not all of them may necessarily be implemented.

To navigate conflicting design principles and user feedback: 1. Reassess principles: Are they still valid given user needs? 2. Understand feedback deeply: Identify root causes and specific pain points. 3. Seek creative compromises: Find solutions that respect principles and user needs. 4. Test and iterate: Use A/B testing to validate changes before full implementation. 5. Communicate clearly: Explain design decisions to users to increase understanding and acceptance.

To reconcile user feedback with app design philosophy, prioritize core principles while remaining flexible. Balance maintaining the app's vision with integrating user-driven improvements, focusing on enhancements that align with long-term goals and improve user experience without compromising the app’s integrity.

While sticking to your design vision is important, being adaptable shows users you're listening. Sometimes, tweaking your approach can lead to a better product without losing the core essence of your design. Look for overlaps between user feedback and your design goals. Often, users highlight pain points that can be addressed without completely overhauling your principles.

1. Embrace flexibility by adapting design principles to meet user needs. 2. Find common ground between feedback and your design ethos. 3. Use data to guide design changes while maintaining your overall vision.