Your "Fix My Speaker" app is a great concept, but there are a few areas for improvement. The UI could be more user-friendly with clearer instructions for first-time users. Also, consider adding a progress bar or visual indicator while the speaker cleaning process is running. Some users report mixed results—perhaps an option to adjust the frequency settings manually would help. Lastly, adding a brief explanation of how sound waves remove water or dust would enhance credibility. Overall, the app has potential, but refining usability and effectiveness would make it even better. Keep up the good work!