OCAT feature highlights and learning flow

This article is based on OCAT 9.0. If features change or differ, please refer to the latest version of the app.

OCAT is designed around a short learning loop: think of something you want to say, ask AI how to say it, collect the useful sentence, then make it familiar through repeated listening and shadowing.

This article focuses on OCAT features and learning surfaces rather than generic app flows.

1. Start From What You Want to Say

OCAT helps learners capture things they just thought, just said, or are about to need in real life. In the AI chat page, you can type a sentence in your native language and ask OCAT to express it in the language you are learning.

Over time, saved collections become a personal library of expressions that actually belong to your life.

• Think of a sentence.
• Ask how to say it in the target language.
• Open a sentence in the AI reply.
• Listen, read pronunciation guides, and check the translation.
• Save it to your sentence library.
• Replay, test, and shadow it later.

2. Learning Entrances in AI Chat

The bottom of the AI chat page offers clear input modes, so learners do not need to write complex prompts.

How to say

Use this when you want to turn a native-language idea into the target language. It is built for real daily needs, not generic example generation.

• How do I say: The weather is nice, let’s go for a walk?
• How do I say: Sorry, I want to change my reservation time?
• How do I say: I said that wrong, let me explain again?

What does it mean

Use this for foreign words, short phrases, or full sentences. AI can explain meaning, tone, and usage. For Japanese, replies can include pronunciation support so reading can become speaking.

Free questions and follow-ups

Ask about nuance, politeness, naturalness, usage boundaries, or whether an expression fits a situation. After a message, the same entrance becomes a natural place to ask follow-up questions.

Conversation practice

Text conversation practice lets learners think first, build a sentence, and then send it. You can use your native language when you know what you want to say but not how, or use the target language when you want to try speaking directly.

3. Topic-Based Conversation Practice

Conversation mode can be given a specific topic. A good topic describes a situation: who you are, who the other person is, where you are, what you want to accomplish, and what role the AI should play.

• Practice with a convenience-store clerk.
• Order, add items, and pay at a restaurant.
• Make small talk with a stranger.
• Explain your thoughts to a teacher.
• Use simpler expressions, polite style, or casual style.
• Chat naturally like friends, or be guided like a teacher.

4. Tappable Sentences in AI Replies

Foreign-language sentences in AI replies can be opened as individual learning items. A detail sheet can show the original sentence, translation, pronunciation guide, playback controls, copy actions, and a save button.

5. Save Sentences, Not Knowledge Points

OCAT collections are organized around sentences. Each saved item works like an expression card with source text, translation, pronunciation aid, tags, notes, and mastery state.

• Travel conversations.
• Restaurant ordering.
• Work communication.
• Everyday small talk.
• Sentences you repeatedly fail to say.

6. Groups, Table of Contents, and Long Material

Collections can hold structured material, not only isolated sentences. Group headings organize sentences by chapter, topic, scene, or date. Long articles, scripts, class notes, or personal expression lists can be split into sentences and turned into playable review material.

7. Search Your Sentence Library

OCAT can search saved content and show which collection each match belongs to. Results can be selected and moved in batches.

• Find a sentence when you forgot where it was saved.
• Find all sentences related to a word.
• Move search results into a new topic collection.
• Replay expressions you learned before.

8. Public Sentence Collections

Besides collecting from AI chat, OCAT provides public sentence collections. You can preview grouped sentences and import a set into your local learning library, where it can be played, searched, tested, and shadowed.

9. Repeated Listening

Collection playback is not just reading once. It gives controls for making sentences familiar through listening.

• Whether to play translation.
• Interval between repeated plays of the same sentence.
• Interval between different sentences.
• How many times to repeat the original.
• Playback speed for each pass.
• Whether the second pass is quieter.

10. Sleep Timer and Shuffle

Sleep timer is useful before bed, while walking, or during spare moments. Shuffle breaks fixed order and checks whether you really know the sentences beyond sequence memory.

11. Test Mode

Test mode hides the foreign sentence and leaves clues such as translation. You recall the sentence first, reveal the answer, then play it to confirm sound and rhythm.

12. Shadowing

Shadowing is one of OCAT’s key active practice modes. It focuses the current sentence and guides a listen, repeat, record, and listen-back cycle.

• Focused sentence.
• Today’s count and goal.
• Playback.
• Recording.
• Listen to your own recording.
• Mark for focused practice.
• Read +1.
• Move to the next item.

13. Recording Playback

Recording is not about complex scoring. It lets you hear yourself. Many speaking problems become obvious only when you hear your own voice.

14. Review-Oriented Shadowing Lists

Shadowing can organize content into Today’s Review, New Recommendations, and other items. This makes today’s practice target clearer while leaving the rest of the collection accessible.

15. Memory Curve List

The Memory Curve entry gathers saved content that is worth reviewing today. It is useful when you do not know what to listen to or practice next.

16. Immersive Mode

Immersive mode makes collections feel more like reading panels and less like management lists. You can adjust source text size, translation size, translation visibility, and tags or notes.

17. Vertical Japanese Layout

For Japanese learning, OCAT offers a full-screen vertical playback page with pronunciation guides, translation, and tags. It helps learners focus on the current sentence in a layout closer to Japanese reading habits.

18. Japanese Learning Details

OCAT includes Japanese-specific surfaces to make sentences easier to read, hear, save, and repeat.

• Kana pronunciation guides.
• Switchable pronunciation display style in experimental options.
• Vertical playback for Japanese reading.
• Conversation topics can specify polite or casual style.
• Japanese first-person preference can affect the expression tone you practice.

19. Multiple Playback Styles in Sentence Details

Sentence details include playback and more playback options. Trying several voices, speeds, or styles for the same sentence can help learners hear the core rhythm instead of memorizing one fixed voice.

20. Copy, Tags, and Notes

Sentences can be organized, moved, and reused.

• Copy original text.
• Copy original and translation.
• Add tags.
• Write notes.
• Move to another collection.
• Insert groups.
• Reorder.
• Mark mastery.

21. Feedback and Regeneration

When learning material feels wrong, OCAT offers repair actions. You can report pronunciation issues and refresh audio, or request a new translation.

22. How to Use OCAT Well

OCAT works best through small daily accumulation rather than one-time browsing. Its value grows as the sentence library grows.

• Ask about what you genuinely wanted to say today.
• Save only sentences you want to hear and say again.
• Listen to a small part of your collection every day.
• Use test mode to recall originals.
• Mark hard sentences for focused practice.
• Use recordings to check whether you can really say them.

23. In One Sentence

OCAT is not just a tool for reading AI answers. It turns AI replies into a personal sentence library that can be saved, played, tested, shadowed, and refined over time.