By Yajush Gupta · 7 August 2025 · News
Billie Onsite CEO Annie Liang spent years perfecting her app's UI, but it wasn't until she tested at 300 sites that she discovered a shocking truth. Click to learn what she wishes she knew sooner.
Fifteen app iterations, patent-pending UI, voice activation. Why Billie Onsite CEO Annie Liang obsesses over one-handed mobile operation.