SubLingo: Vocabulary Builder app icon

SubLingo: Vocabulary Builder

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SubLingo turns the words you meet into words you remember

By Nguyen Thanh Thien · Education
Debuts score 78NewRate it first

Why we expect it: Clear value, thoughtful spaced repetition, and sentence-based cards make this a promising vocabulary tool for learners.

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In short

SubLingo: Vocabulary Builder is an education app that helps users save words they encounter, along with the sentences where they found them, and review them with FSRS-6 spaced repetition across nine quiz formats. It suits learners who want short daily sessions of about five minutes, and it works offline as a guest without an account. What stands out is that it grades answers itself, using accuracy, speed and hints to set when each word returns.

Summary by Debuts, based on the App Store listing.

About

SubLingo turns the words you meet into words you remember. Save a word, and SubLingo schedules it with FSRS-6 spaced repetition, quizzes you nine different ways and grades every answer for you — so five minutes a day is enough.

HOW IT WORKS

• Save words from anywhere. Share text to SubLingo from any app, add words by hand with built-in translation, or sync them from the free SubLingo browser extension. • Every word keeps its sentence. Each card holds the translation, the meaning, the line you found it in, a picture you pick and its pronunciation. • Review in short rounds. SubLingo serves what's due, mixes in your saved sentences and lets you resume a round you left. • It grades itself. Tap or type your answer and FSRS-6 reads your accuracy, your speed and whether you needed a hint, then decides when the word comes back — in minutes, days or months. Nothing to self-rate.

NINE WAYS TO REMEMBER

New words start with recognition drills; as a word sticks, SubLingo moves you on to real recall: • Pick the meaning • Name the picture • Listen and pick • Complete the scene • Spell the word with letter tiles • Type the missing word • Type what you hear • Write it in the language you're learning • Translate it back

Every word climbs five mastery stages: New → Learning → Familiar → Strong → Mastered.

BUILD THE HABIT

• Review Lock (opt-in): Screen Time pauses the apps you choose until today's cards are done. Snoozable, and off whenever you like. • Streaks with a daily goal, freeze days for when life happens, milestone badges and a streak card you can share • A daily reminder at the time you choose • Lightning Match: a fast word-matching game that never touches your schedule • Combos, hints, a slower replay and a summary after every round • Stats with 30-day charts and a mastery breakdown

MORE

• 48 languages, in either direction • Pronunciation from your phone's own voices — works offline • Light and dark themes, and sound effects you can switch off • A study buddy who cheers you on

YOUR WORDS STAY YOURS

Start as a guest — no account needed. Your vocabulary lives on your device and works offline. Sign in only when you want cloud sync. You can delete your account inside the app at any time, or at sublingo.pro/account-deletion.html.

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Discovery signals

How AI and people discover SubLingo: Vocabulary Builder on Debuts
AI-readyPartly
78% described for AI to match
Discoverable nowLiveStructured data on this page and the Debuts API

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