What is Thé🍵saurus?
Thé🍵saurus is a French–Vietnamese and Vietnamese–French dictionary app. It covers more than 48,000 French words and 38,000 Vietnamese words. Each French entry gives the IPA pronunciation, the word type and gender, the meanings in Vietnamese, example sentences, and synonyms or antonyms.
The dictionary and the conjugation tables of more than 10,000 French verbs are stored on your device, so they work without an internet connection. Type a conjugated form such as “suis” and you land on “être”; type without accents and you still find the word.
It started as a side project during studies in France, to stop switching between a dictionary, a conjugation app and a website for example sentences. Read the story behind the app
What an entry looks like
manger [mɑ̃ʒe]
ngoại động từ
- ăn
Manger du riz: ăn cơm
- ăn mòn, gặm
La rouille mange le fer: gỉ ăn mòn sắt
manger comme quatre: ăn gấp năm gấp mười
Features
Two-way dictionary
French → Vietnamese and Vietnamese → French, with meanings, example sentences, synonyms and antonyms.
Pronunciation
IPA for every French entry, and spoken pronunciation on iPhone and Android.
Every tense, fully conjugated
Tables for more than 10,000 French verbs, from présent to futur antérieur.
Works offline
The dictionary and the conjugation tables are stored on your device. No connection needed.
Sentence translation
Translate between French and Vietnamese on iPhone and Android, offline once the languages are downloaded.
Quizzes from A1 to C2
Multiple-choice questions by level, each answer with a detailed explanation.
A quote every day
A new French quote each day, also as a home-screen widget. Tap any word to see its meaning.
Look up words in any Mac app
Select a word, right-click › Services, and its meaning appears next to the text. Or search from the menu bar.
See it in action
Thé🍵saurus on Mac: the same dictionary as on your phone.
Questions
Is Thé🍵saurus free?
Yes. Every feature is free and there are no ads. You can leave an optional tip to support development.
Does it work without internet?
Yes for the dictionary and verb conjugation, which are stored on your device. Translation works offline on iPhone and Android once you download the languages. Quizzes need a connection.
Which devices does it run on?
iPhone, Android and Mac.
Do I need an account?
No. Signing in with Google or Apple is optional and only keeps your quiz progress across devices.
Can I search for a conjugated verb or type without accents?
Yes. Searching “suis” finds “être”, and you can type without accents.
A word is missing. What can I do?
Tap “Suggest a word” in the app and we'll add it.
Download Now
Get Thé🍵saurus on your favorite platform