WordBit Engels is an Android application developed by WordBit, available for free in the Education & Reference category. This app provides a unique and innovative way to learn English vocabulary with the help of your phone's lock screen. With over 10,000 phrases and words organized by levels from A1 to C2, including phrases for language proficiency tests like IELTS and TOEFL, this app is perfect for beginners and intermediate learners.

The app offers various features such as quizzes, illustrated slides, and audio pronunciation to make learning engaging and fun. You can also review the words you have learned, share them with friends, and customize the app's theme. The app also has an option to save incorrectly answered questions and categorize the words you know and those you don't.

However, the app's most unique feature is its automatic activation every time you unlock your phone, ensuring that you learn new words every time you use your phone. Although this feature may not be suitable for everyone, it's a great way to learn English vocabulary without having to set aside extra time during the day.

Overall, WordBit Engels is a fantastic application for anyone looking to improve their English vocabulary. The app provides an innovative and fun way of learning and is a great tool for those preparing for language proficiency tests.