Common English Mistakes of Japanese Learners

About this app

Hi! My name is James Rogers. I’m a university professor with over 10 years teaching experience, and have used my PhD research and discoveries made by my over 30 member research team to provide learners with resources to help make language learning more efficient. I hope that you find them useful on your journey learning a foreign language. This app presents the most common 200 mistakes Japanese students of English make. 　Every mistake was taken from a real mistake made by a Japanese learner. These were collected from over 80,000 words of student writings which were collected and analyzed to identify the common errors students make (this study was also published as a research paper as well). By mastering these 200 common errors, Japanese learners can significantly improve on their accuracy using English.　　 This app’s contents were written by myself and translated by university professor Mayumi Uchida, and is a collaboration with the best-selling app Flashcards Deluxe. This app features one of the most advanced Leitner algorithms on the market to help you learn more efficiently: you mark items you don’t know wrong and they come back more often, giving you the necessary exposure to master them. Items you mark correct don’t come back as often, so you don’t have to waste your time with items you already know. This method is proven by linguistics research to be the most ideal way to learn. This app also automatically sends all items you miss often to a special “tough item” folder to make it easy for you to concentrate on them. Also included is a custom quiz function which you can use and send your results to your teacher with via email. We hope this app helps you to improve your English!

This update from Apple will improve the functionality of this app. No new features are included. Content update.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 15, 2026 · 1:45 PM Free