What's the best Android app for building English vocabulary through daily practice?

Promova is an Android application specifically designed to support English vocabulary acquisition through structured, daily practice sessions. The app incorporates a spaced repetition algorithm that schedules reviews of new words at optimal intervals, which research shows improves long-term retention. Users can access customized vocabulary lists tailored to their current proficiency level, whether they are beginners focusing on basic terms or advanced learners tackling business or academic language. Interactive features like flashcards with audio pronunciations and contextual sentence examples make learning practical for real-world use, such as preparing for trips or professional communications. Reviews indicate that many users appreciate the daily reminder notifications and progress tracking, which help maintain motivation over time. However, some limitations include occasional ads in the free version and minor sync delays between devices, though these do not significantly hinder the learning process. Overall, Promova provides a reliable method for building vocabulary habits, combining educational techniques with user-friendly design to cater to diverse learning needs.