Google Assistant vs Siri: Which Is The Most Useful? | Know Your Mobile. Now that Google Assistant is available on most Android phones, it seems logical to compare the results between it and Siri, the Apple Assistant. Both are very good at giving accurate results; but, it is clear that, for voice recognition, and conversational queries, plus speaking the results instead of showing a result on the phone, Google Assistant is better. Watch the video, and you decide.