Build vocabulary
Declan Words
Learn words by topic with native-speaker audio, flashcards and exercises. Start with 3 free topics in every language.
Explore WordsiPhone, iPad & AndroidLanguage learning apps
Learn a language
Make it yours
Build vocabulary, understand grammar and practise with audio. Choose your language to find your next step.
16 languages4 app familiesiOS & Android*
Start here
What will you learn next?
Choose your language. Find the apps that fit.
FrenchFrançais
SpanishEspañol
Japanese日本語
Korean한국어
Chinese中文
ItalianItaliano
GermanDeutsch
RussianРусский
PortuguesePortuguês
GreekΕλληνικά
Hebrewעברית
EnglishEnglish
Arabicالعربية
DutchNederlands
SwedishSvenska
TurkishTürkçe
No languages match that search and app filter
From our learners
When it starts to make sense
Bootstrap Russian Grammar★ 4.6 / 5
“I’ve learned more Russian grammar from this app in three days than I have in the past five years.”
Bootstrap Korean Grammar★ 4.3 / 5
“It makes complex Korean grammar simple to understand. It's now my go-to grammar resource.”
Your learning, your way
A little focus goes a long way
Four different tools. Each with a clear job to do.
Understand the rules
Bootstrap Grammar
Make sense of sentence patterns with plain-English explanations, audio examples and practice. Choose from five language courses.
Find your grammar courseiPhone, iPad & Android
Hear language in context
Phrases
Listen to everyday expressions recorded by native speakers. Review and practise useful phrases across eight languages.
Explore Phrases ↗iPhone & iPad
Study your own discoveries
LEXEphant
Turn text from your reading or lessons into a personal collection, with AI translation, generated audio and phrase analysis.
Explore LEXEphant ↗iPhone, iPad & Android* Platform availability varies by app. Phrases is available on iPhone and iPad.
Start with a few words, free
Try the first 3 topics in every Declan Words course. Hear the vocabulary, explore the exercises and see how it fits your learning routine.
A good place to begin
Small questions
Clear answers
Choose the tool that supports the way you like to learn. You can always add another later.
Which languages can I learn with Declan apps?
The suite covers French, Spanish, Japanese, Korean, Chinese, Italian, German, Russian, Portuguese, Greek, Hebrew, English, Arabic, Dutch, Swedish and Turkish. Available apps differ by language; choose a language above to see its options.
Which app should I start with?
Choose Declan Words for prepared vocabulary topics, Bootstrap Grammar for structured grammar explanations and exercises, Phrases for native-speaker expressions, or LEXEphant to collect and study your own text.
What can I try for free?
The first 3 topics in every Declan Words course are free. Bootstrap Russian, Korean, Chinese and French Grammar each include the first 10 topics free. Visit the app pages or store listings for other free content and purchase details.
Are the apps available on iPhone and Android?
Declan Words, Bootstrap Grammar and LEXEphant are available on iPhone and Android, with iPad support too. Phrases is available on iPhone and iPad. Each language page shows the appropriate store links.
Does one purchase unlock the whole suite?
No. These are separate apps with their own purchases. Bootstrap Grammar offers a one-time full-course purchase. Words and Phrases have in-app purchases, while LEXEphant uses subscriptions for full access. Your store shows the current terms and local price.
Which languages have a Bootstrap Grammar course?
There are Bootstrap Grammar apps for Russian, Korean, Chinese, French and Spanish. Each has its own course page, topic list and download links.
Is the audio recorded by native speakers?
Declan Words, Bootstrap Grammar and Phrases use native-speaker recordings. LEXEphant generates audio with AI for the words and phrases you add.
Can I use these apps alongside a class?
Yes. Use prepared vocabulary and grammar topics to support your lessons, listen to phrases for extra practice, or collect the words from your class in LEXEphant.
Prefer to begin on paper?
Try a free grammar sample
Read a few introductory topics from our companion books, then continue with audio and exercises in the app.