Based on the users' reviews on the Apple App Store, here are the conclusions: **Pros:** 1. **Easy to use**: Users praise the app's simple and intuitive interface, making it easy to apply the high-pass filter to their audio files. 2. **Effective noise reduction**: Many reviewers report that the app effectively removes noise and hiss from their audio recordings, leaving them sounding clearer and cleaner. 3. **Powerful editing features**: The app's advanced editing features, including EQ and compression, allow users to fine-tune their audio files and get professional-sounding results. **Cons:** 1. **Limited output formats**: Some users are frustrated that the app only allows export in WAV or MP3 formats, with no option for more niche formats like FLAC or AIFF. 2. **Crash issues**: A few reviewers report that the app occasionally crashes or freezes when attempting to apply complex edits or processing large files. 3. **Lack of visual feedback**: Some users feel that the app lacks clear visual feedback during processing, making it difficult to gauge the effectiveness of edits or troubleshoot issues.