You're looking for an AIpowered answering app! There are many great options available, depending on your specific needs and preferences、Here are some popular ones:

1、Siri (iOS): Siri is a virtual assistant that can answer a wide range of questions, from general knowledge to entertainment and more.
2、Google Assistant (Android, iOS): Google Assistant is another popular virtual assistant that can answer questions, provide information, and even control smart home devices.
3、Cortana (Windows, Android, iOS): Cortana is a virtual assistant developed by Microsoft that can answer questions, set reminders, and more.
4、Alexa (Amazon Echo, Android, iOS): Alexa is a virtual assistant that can answer questions, play music, control smart home devices, and more.
5、Chatbots: There are many chatbot apps available, such as Replika, Woebot, and Wysa, that use AI to have conversations and answer questions.

Some other AIpowered answering apps that are worth mentioning include:

1、Wolfram Alpha (iOS, Android): Wolfram Alpha is a computational knowledge engine that can answer a wide range of questions, from math and science to history and culture.
2、Quora (iOS, Android): Quora is a Q&A platform that uses AI to match users with experts who can answer their questions.
3、Stack Exchange (iOS, Android): Stack Exchange is a Q&A platform that covers a wide range of topics, from science and technology to culture and entertainment.

When choosing an AIpowered answering app, consider the following factors:

1、Accuracy: How accurate are the answers provided by the app?
2、Range of topics: Does the app cover a wide range of topics, or is it specialized in a particular area?
3、Ease of use: How easy is it to use the app, and how intuitive is the interface?
4、Additional features: Are there any additional features that are important to you, such as the ability to ask followup questions or access to expert opinions?

I hope this helps you find the perfect AIpowered answering app for your needs!