SubFit

Sentence by sentence, understandable, speakable, and memorable.

SubFit is your "language gym"—not just memorizing vocabulary, but like a workout, training your listening and speaking skills into muscle memory.

■ Sentence-by-sentence training, truly practicing "speaking it out"
Each sentence guides you through the complete process: blind listening → simultaneous listening and reading → memory stripping → auditory reflexes → recording → reviewing results. With spaced repetition, the system automatically schedules review sessions, ensuring solid memorization.

■ Turn your favorite content into courses
Reject forced listening to unwanted materials. Import your favorite movie and TV series subtitles, magazines (photo OCR / QR code scanning), and SubFit automatically segments and translates them, turning them into your personal courses. Learning what you truly want to learn is the key to sustaining daily practice.

■ AI explanations, instantly understanding "why native speakers say it this way"
Each sentence is analyzed by AI: core language sense, sentence structure, and alternative examples, grasping the logic behind the language, not just rote memorization.

■ Multilingual & Multi-Accent Support
Supports English, Japanese, Korean, Dutch, and French; English also includes five accents: American, British, Australian, Indian, and Canadian. Choose the one your ears are most comfortable with.

■ Practice with Feedback
XP, levels, consecutive days, and leaderboards provide a sense of accomplishment every day you speak.

Start now and turn every piece of content you listen to into your spoken ability.

Subscription Plans (Auto-Renewal)

・SubFit Plus — NT$69 per month
200 new sentence training sentences per month, all voices and accents, unlimited AI explanations, cloud backup of courses, and cross-device synchronization.

・SubFit Pro — NT$115 per month
Unlimited sentence training, includes all Plus features, and can export SRT subtitles and Anki cards with AI analysis.

The free version allows use of preset voices and includes a monthly free training allowance.