Need Flutter Developer for Small Mobile App Fixes

Hi, I have an existing Flutter mobile app that's mostly working fine, but there are a few things I'd like to improve. Some screens have minor layout and spacing issues, especially on different Android devices. There's also a small navigation issue that needs to be fixed. I'm not looking for a full redesign or any major new features, just someone who can review the existing code and make these improvements. My budget is around $50-$80, and I'd prefer to work hourly. We can split the work into a few small steps, starting with reviewing the app, then making the fixes, and finally testing everything. I'll share the source code and more details once we get started. If everything goes well, I'd be happy to continue working together on future updates. Please let me know if you've worked with existing Flutter apps before and how soon you could start. Thanks