SonusQuest vs Fastsound

SonusQuest: Turn your phone into a real-time in-ear monitor — it captures the sound around you, removes noise, boosts your voice, and plays it back through your earphones so you can hear yourself while live streaming. It can be used to practice pronunciation, reading aloud, singing, aiding memorization, DAF (Delayed Auditory Feedback) therapy for stuttering, and more. Some users with hearing loss use it as a hearing aid; we suggest such users treat this app as an introduction to hearing aids rather than a replacement for one. 1. Supports both wired earphones and Bluetooth earphones 2. Supports the phone's built-in microphone, wired earphone microphones, and lavalier (clip-on) microphones 3. Hearing protection: automatically lowers output power when a sudden loud sound is detected 4. Long-duration loop recording, with recordings automatically split into multiple files of a fixed length 5. Audio noise reduction based on traditional signal-processing algorithms — simple and practical, effectively filtering steady background noise 6. AI-powered intelligent noise reduction that efficiently filters irregular background noise, such as the clatter of keyboard typing, footsteps, knocking, the hum of robot vacuum cleaners, and more 7. On-demand audio delay control: supports delay settings from 1 to 30 seconds, as well as millisecond-level delay settings to help friends correcting stuttering 8. Automatic gain control, making sound steadier and easier to understand 9. 10-band audio equalizer so users can customize their preferred tone. A default EQ preset for speech is built in and can be reset with one tap

Fastsound is applied to connect the hearing aid to the smart phone, and customize the hearing aid via phone. listening mode change, volume adjustment, noise reduction, etc.