English that
actually
sticks.
Read AI-generated articles, see words in context, and climb a 5-level output ladder from passive recognition to free speaking. Powered by FSRS spaced repetition.
Speaking Task · L3 Phát âm
Shadow the model sentence
Word
serendipity
/ˌser.ənˈdɪp.ɪ.ti/
FSRS
7.4d
stability
Three steps to fluency
AntiRusty builds a closed loop: input feeds memory, memory gates output.
Read in Context
Read AI-generated articles at your CEFR level. New words are highlighted, and every exposure builds recognition.
Review with FSRS
Spaced repetition schedules each word at the right moment. Stability grows with every correct review.
Climb the Output Ladder
Move from MCQ recognition to free speaking. AntiRusty unlocks practice levels based on memory strength.
5 Levels to Fluency
Each level is gated by FSRS stability, so you advance only when your memory is strong enough for active production.
Word encountered but not yet active.
MCQ: pick the right meaning.
Fill-blank with choice or typing.
Shadow model sentences.
Shadow → Modify → Create → Keyword bridge.
20 self-produced sentences. True fluency.
Designed to reach L5 in about 60 days of consistent practice.
Everything you need to speak
FSRS v5 Spaced Repetition
Next review scheduled at the exact moment before you forget. Stability grows with each session.
AI Context Variants
DeepSeek generates practical contexts for every new word. Your brain learns patterns, not isolated vocabulary.
Built-in Speech Recognition
Tap the mic, speak, and get instant feedback on shadowing, modifying, and creating sentences.
Graduated Output Ladder
AntiRusty unlocks each level when FSRS stability and exposure count reach the threshold.
Native-Context AI Reader
Read AI articles matched to your CEFR level and vocabulary gaps. Highlighted words feed your review queue.
Deep Progress Tracking
Track stability score, appearance count, output level badge, and leech detection for every word.
50
Exposures to master a word
appearance count threshold
5
Output levels
recognition to free speaking
60
Days to fluency
at a consistent practice pace
Available on
iOS & Android
Free to download. Start with reading and FSRS reviews immediately. Output tasks unlock as your vocabulary grows.
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