BioAid, a smartphone app, turns your iPhone into a hearing aid. Unlike conventional hearing aids, which simply amplify noises, BioAid can both amplify and decrease noise. This allows ambient noises in crowded settings. This allows users to be comfortable in crowded settings with loud, ambient noise.
BioAid comes with six main settings but also allows users to adjust settings to match their disabilities.
Publicly available: yes
Countries where available: Worldwide
Price range (USD): Free
Available online: yes