A vocabulary learning app!

It helps you stick to a daily word-learning habit, by giving you a sense of satisfaction after completing every set of words.

In addition, the built-in Ebbinghaus forgetting curve may remind you of reviewing the words at optimal times.

Just remember not to open games while studying!🤣

Maybe listening to podcasts helps to improve Listening & Exposure to Natural Speech. Because podcasts expose you to diverse accents, slang, and conversational rhythms—key for intermediate learners.

For example: BBC 6 Minute English

Format: 6-minute episodes on topics like technology, culture, or science. Hosts explain 3–5 key phrases/idioms (e.g., "on the fence," "hit the books") and discuss them in context.

It's convenient, short, focused, and designed specifically for learners. Transcripts are available online for review as well. So you can have a try, and practice twice or three times a week.

You know China Daily is one of the most useful apps to learn English. If you have mastered many words, you will benefit a lot by reading news every day.

An advanced English dictionary.
Don't buy the intermediate level ones for they won't be suitable for you after you become an advanced learner.