LangJournal: English & Spanish

LangJournal is an app designed to help you acquire language skills through the habit of keeping a diary. You can learn English, Korean, Japanese, Chinese, French, German, Spanish, Portuguese, and Dutch. The AI instantly checks your diary from perspectives such as "grammar, vocabulary, and syntax."
There's also a feature for learning with friends in teams. Teams are small, with five members each. You can join a team and exchange diaries and comments with users learning the same language. Continuing a diary in a foreign language might be challenging alone, but with friends, you can achieve it.
Enhancing writing skills makes LangJournal ideal for preparing for tests like TOEFL.
Feature Details:
■ Instant diary corrections powered by AI
Your English compositions and diaries, as well as writings in other languages, are corrected by AI. Three distinct AIs are available, each with its unique features. You can receive three patterns of correction results. Writing a diary and receiving immediate feedback can help improve your language skills.
Chat and Conversation with AI
You can interact with AI through text or voice. Through chat, you can learn languages.

■ Share diaries and connect with peers in teams
Form teams of five and post comments and diaries to each other. Encourage each other with users learning the same language. Studying in groups can increase the continuation rate more than threefold compared to studying alone. Teams can be formed not only through open recruitment but also by invitation only.
※Currently, this feature is available only for learners of English, Korean, or German.
■ Pose questions to ChatGPT
Directly ask ChatGPT-4 questions about translations and expression improvements for practical learning support. This method allows you to receive feedback immediately and efficiently improve your language skills.
■ Evaluate your journal entries with CEFR levels
Your diary will be analyzed from three aspects: words, grammar, and verb forms, and rated on a six-level scale from A1 to C2.
※Currently, this feature is available only for learners of English.
■ Attach images or videos to entries
You can include up to four photos or videos per diary entry. Keeping images with your writings makes looking back on your diaries more enjoyable.
■ Record and verify pronunciation with voice recordings
After writing your diary, you can record your voice and save it in the app. It helps with pronunciation checks. Reading aloud helps cement your memory and aids in real-life conversations.
■ Translation with DeepL
You can translate your written diary using DeepL. Checking whether it reads naturally in your native language after translation can help with language learning.
■ Write Diaries Multiple Times a Day
There is no limit to the number of diaries you can write in a day. You can write as many diaries as you want, and of course, all of them will be corrected by AI.
■ Register Locations in Diaries
You can pin locations on a map. Writing a diary when you travel allows you to easily reminisce about your experiences.
■ Passcode Lock
If you don't want others to see your diary, you can lock the app. It supports Face ID and Touch ID.
■ Reminder Function
Set your study time, and you'll receive push notifications. Use the reminder function to prevent forgetting to write until diary-keeping becomes a habit. Data shows that continuing for more than 21 days makes it easier to maintain the habit. Studies also suggest that setting a fixed time for writing every day makes it easier to form a habit. Decide on a time to write your diary daily and set a reminder.
Languages Available for Learning:
・English
・Korean
・Japanese
・Chinese
・Spanish
・German
・French
・Portuguese
・Dutch
Recommended for:
■ Those who are serious about studying languages
Writing is incredibly important in language learning. You can't speak what you can't write. Writing also practices speaking. What you write in your diary can be used in everyday conversations.