Learn on your device
Dictionaries, examples, grammar and practice content are stored on your phone for offline use.
Language learning apps
Take a language.
Make it yours.
A dictionary on your phone, spaced-repetition cards and practice games. I’m building a family of apps for daily learning that is less dependent on an internet connection.
Choose a language
MonVocab · Released · iOS & AndroidChoose a language
English
MonVocab
English vocabulary A1–C2, offline and free. English–Vietnamese lookup, review cards and bilingual reading; download voices for offline audio.
Released · iOS & Android
Chinese
Monhanzii
Learn Chinese offline, one card at a time.
Testing on iPhone
German
MonGerman
German A1–C1, fully offline.
Data prepared · App development to follow
Japanese
MonJapanese
JLPT vocabulary, kanji and grammar, offline.
Data prepared · App development to follow
Korean
MonKorean
Korean by TOPIK level, offline, with Hanja roots.
Data prepared · App development to follow
Spanish
MonSpanish
Spanish A1–C1 with full conjugations, offline.
Data prepared · App development to follow
MonVocab is available on iOS and Android. Monhanzii is in testing; the other apps are in development.
MonVocab
One approach.
More languages.
The approach below is for the five new apps, starting with Monhanzii. MonVocab combines spaced repetition with streaks, hearts and XP; download pronunciation audio for offline listening.
Review when it matters
FSRS spaced repetition brings back due cards alongside new vocabulary, at your own pace.
An optional account
Learning does not require sign-in. Internet and an account are used for multi-device sync and Pro management.
Data sources & attribution
Sources are listed separately for each app. CEFR/JLPT levels are estimates; HSK and TOPIK follow published word lists.
MonVocab
MonVocab’s data sources and licences will be listed here.
Monhanzii
CC-CEDICT (CC BY-SA); HSK 3.0 lists; Unihan and character analysis; Tatoeba (CC BY 2.0 FR).
MonGerman
The detailed source and licence inventory is being checked before release.
MonJapanese
JMdict / KANJIDIC2 — EDRDG (CC BY-SA 4.0); Tatoeba (CC BY 2.0 FR); kanjium.
MonKorean
NIKL Korean Learners’ Dictionary (CC BY-SA). NIKL audio and images are not used; audio is generated by the project.
MonSpanish
The detailed source and licence inventory is being checked before release.