AI Powered Chat Bot Assistant app, which has answered over 350 million questions, can be downloaded for free. Similarly, the Ask AI Personal Assistant app can be downloaded from the App Store at no cost. However, this app offers in-app purchases for weekly, monthly, and annual subscriptions. It's worth noting that some versions of the Ask AI app, such as the one available on Google Play, offer different subscription plans. These plans range from a free plan that allows users to ask 10 questions per month to a Pro plan that costs $9 per month and allows users to ask 100 questions per month. Other versions of the app, such as Ask AI No Subscription, offer a pay-per-question model, where users can ask questions for a penny each. Overall, while the Ask AI app may have some premium features, it appears that users can access the basic chatbot functionality for free.