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114,000+ dictionary entries. 9,500 stroke diagrams. Fully offline.

The Chinese dictionary and study tool you'll actually use every day.

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Built for Chinese. Nothing else.

Dictionary, stroke order, spaced repetition, word map, and text reader — integrated into one app that works without internet.

Visual Word Map

5,000 HSK words mapped across six concentric rings — HSK 1 at the centre, HSK 6 at the edge. Words are clustered by topic. Pinch to zoom. Tap any word to open its dictionary entry. Watch dots turn solid as you master them.

114k Dictionary

Full CC-CEDICT dictionary with instant FTS5 search. Type English, pinyin (with or without tones), or hanzi. Results in under 50ms. Every entry includes pinyin with tone marks, all definitions, and a stroke order diagram.

FSRS Spaced Repetition

The same algorithm researchers proved outperforms Anki's SM-2. Six review modes: character-to-definition, definition-to-character, listening, handwriting, smart mix, and random. Rate as Again / Hard / Good / Easy.

Stroke Order

Color-coded, numbered stroke diagrams for 9,500+ characters from the Make Me a Hanzi dataset. See exactly how each character is constructed — radical by radical, stroke by stroke.

Text Reader

Paste any Chinese text — an article, a WeChat message, a novel excerpt. Longtang segments it into tappable words using jieba. Tap to look up, one more tap to save. Mine vocabulary from real content.

Visual Word Map114k DictionaryFSRS Spaced RepetitionStroke OrderText Reader
WORD MAP

5,000 words. Six rings. One map of everything you know.

Every HSK word has a fixed position on a concentric ring map. Ring 1 is HSK 1 (150 words, A1). Ring 6 is HSK 6 (2,500 words, C2). Words are clustered by topic — food, time, travel, body — so related characters sit together. Unlearned words appear as faint dots. Words in review glow amber. Mastered words turn solid. Zoom out to see your full progress. Zoom in to browse and tap individual characters.

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5,000 words. Six rings. One map of everything you know.
114,000+ ENTRIES

A real dictionary, not a glossary.

Full CC-CEDICT with FTS5 indexing. Search by English, pinyin (tone numbers or marks), simplified, or traditional characters. Every entry shows: all definitions, pinyin with tone marks, and a detailed stroke order diagram. Results appear as you type, typically in under 50ms. Save any word to your lists with one tap. The entire dictionary ships with the app — no internet needed, ever.

Download Longtang
A real dictionary, not a glossary.

Everything else you'd expect. And then some.

HSK 1–6 Built In

All 5,000 words, pre-organized. HSK 1 (150 words) through HSK 6 (2,500 words) — each with its own list, its own ring on the map.

100% Offline

The full 114k dictionary, 9,500 stroke diagrams, FSRS engine, and text reader all run locally. No server, no loading, no excuses.

Custom Lists

Create lists for any purpose — restaurant vocab, HSK 3 drill, words from today's article. A word can live in multiple lists. Review by list or review everything.

Six Quiz Modes

Character → definition, definition → character, listening, handwriting, smart mix, and random. Pick one or let the app choose.

9,500 Stroke Diagrams

Color-coded, numbered strokes from Make Me a Hanzi. See how every character is constructed — not just what it means.

Native Pronunciation

Text-to-speech for every character and word. Hear the tones before you review. Available on iOS and Android.

Longtang replaces your dictionary app, your flashcard app, and your character lookup tool. One purchase. No subscription. No ads. Yours forever.

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People who take Chinese seriously use Longtang

I used Anki for two years. Setting up Chinese decks was half the work. Longtang gave me a better dictionary, better SRS, and stroke order — out of the box.
Sarah K.
The word map changed how I think about progress. I'm not just memorizing a list — I can see exactly where I am across all six HSK levels.
Marco B.
I paste WeChat conversations into the text reader every morning. Ten minutes later I've saved a dozen new words and they're already in my review queue.
Lena W.
114,000 dictionary entries, offline, with instant search. I deleted Pleco. This is the only Chinese dictionary I need on my phone.
James T.
Die Strichfolge-Diagramme fuer 9.500 Zeichen — das bietet keine andere App auf Deutsch. Endlich verstehe ich, wie die Zeichen aufgebaut sind.
Amelie D.
I used Anki for two years. Setting up Chinese decks was half the work. Longtang gave me a better dictionary, better SRS, and stroke order — out of the box.
Sarah K.
The word map changed how I think about progress. I'm not just memorizing a list — I can see exactly where I am across all six HSK levels.
Marco B.
I paste WeChat conversations into the text reader every morning. Ten minutes later I've saved a dozen new words and they're already in my review queue.
Lena W.
114,000 dictionary entries, offline, with instant search. I deleted Pleco. This is the only Chinese dictionary I need on my phone.
James T.
Die Strichfolge-Diagramme fuer 9.500 Zeichen — das bietet keine andere App auf Deutsch. Endlich verstehe ich, wie die Zeichen aufgebaut sind.
Amelie D.
FSRS actually works. I went from 40% retention with Anki's SM-2 to staying above 85% in Longtang. Fewer reviews, better results.
Thomas R.
Je l'utilise dans le metro tous les jours. Le dictionnaire hors-ligne est instantane, et les six modes de revision gardent les sessions variees.
Claire M.
One-time purchase, no upsells, no subscription nag screens. Just a deep, focused tool for learning Chinese. This is how software should work.
David H.
I'm at HSK 4 and the outer rings of the word map are calling to me. Seeing mastered words fill in is genuinely addictive.
Anna S.
Six quiz modes keep things fresh. Character-to-definition, listening, handwriting trace — I rotate through all of them. My recall has never been better.
Robert L.
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Frequently Asked Questions

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114,000 entries. 9,500 stroke diagrams. Zero subscriptions.

Dictionary. Spaced repetition. Stroke order. Word map. Text reader. All offline. One purchase.

Download Longtang