XLearner

A tool for practicing pronunciation in foreign languages. It can read aloud a sentence or a whole paragraph with your preferred voice, automatically detecting language! (*Currently only Chinese and British/American English are supported.)

You can use it to keep a collection of sentences for practicing.

You can use keyword (by typing, or by speaking to the app) to search in your collection, and you can export them to a file.

The app also provides detailed instructions on how to use the "read aloud" and voice input functionalities.