Questionary is an Android app that offers a database of over 2200 questions to learn or teach English. The app is a compilation of questions that are organized into categories such as topics, grammar points, WH questions, and verb tenses. The app also offers a filter function to quickly find the questions you need.

One of the most useful features of Questionary is the ability to use it as a warm-up in a classroom setting, as a prompt for conversations, or even as a subject for essays and assignments. The app is not just for teachers but also for students looking for out-of-classroom practice, self-directed learning, and advanced speakers who want to keep their communication skills sharp.

Additionally, the app comes with a text-to-speech function that allows you to learn how to pronounce the questions, and you can choose between American and English pronunciation. You can also adjust the text-to-speech speed and use the random function when you don't know what to choose.

Overall, Questionary is an excellent app for anyone looking to improve their English skills. With its vast database of questions and user-friendly interface, it's a great tool for both students and teachers alike.