AI Chatbot is an iPhone application developed by 勇 黎. It is a versatile chatbot that can engage in normal dialogue and communication with human beings. The app not only answers questions but also offers assistance in various tasks such as writing poems, novels, polishing articles, writing codes, correcting homework, writing weekly reports, writing emails, predicting competitions, and even learning English. With an advanced AI model and an extensive encyclopedia, the AI Chatbot is capable of answering any question you ask.

The app also offers a VIP Auto Subscription Service, providing users with unlimited access to all features. The subscription options include a weekly subscription for $1.99, a quarterly subscription for $6.99, and a yearly subscription for $9.99. Subscribing to the VIP service removes ads and unlocks all premium features. Payment for the subscription is charged to the user's iTunes account.

To cancel the subscription, users need to turn off the automatic renewal at least 24 hours before the current subscription period expires. If not cancelled, the subscription will automatically renew. Apple will deduct the corresponding fee from the user's iTunes account 24 hours before the expiration of the subscription service.

For more information, you can refer to the Privacy Policy and Terms of Service provided by the developer.