つけるたびに英単語 小中高TOEICTOEFL is a free lifestyle app developed by MiracleStudy for Android devices. The app is designed to help users learn English words automatically and effortlessly. The app's core learning feature is repetition and drill exercises, and it can only be memorized by frequent users.

The app is perfect for busy people who don't have time to study English. It provides an easy and convenient way to learn English words by displaying them on the lock screen of the user's phone. Every time the user unlocks their phone, they will see a new English word. The app also allows users to bookmark words they want to learn and study them separately.

However, some users have reported that the app's pronunciation volume is low and can be improved by increasing the media volume. Additionally, the app's "OK" button displays the next word, but pressing the back or home button will continue to display the same word. Overall, つけるたびに英単語 小中高TOEICTOEFL is a great app for anyone looking to learn English words easily and efficiently.