Aspects of the present invention allow the customization binary application user interfaces without modification of the underlying source code. Embodiments described herein can provide, for instance, accessibility services such as touchless operation of compiled applications with minimal intervention. Described embodiments can automatically interface with the touch-based operating system to generate hands-free commands that, when detected (e.g., voice detection), can cause corresponding touch-based commands to be executed. Embodiments may utilize audio inputs, by way of example, to facilitate hands-free interaction with the touch-based operating system and applications executing thereon.