I want to build a voice-controlled hands-free AI assistant for Android.

Hi, I want to build a voice-controlled hands-free AI assistant for Android. Main requirements: Always-listening wake word (like "Hey Assistant") User speaks naturally (example: "Open Instagram and like the first post", "Scroll down", "Tap the red button") The app must be able to open other apps and actually tap/press on the screen using voice commands only It should work reliably on different screens As well as speech to text, using AI to fill out emails Can you please give me a quote that includes: Total estimated cost How long it will take Whether you have built an Accessibility Service before What payment schedule you use Thank you.