halcyon
Idyllically calm and peaceful; suggesting happy tranquillity.
Vocabulary · Word of the day · iPhone
The words you were missing.
One beautiful word at a time, with its exact meaning. Swipe, listen and save. And whenever you like, a short challenge to make it stick.
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English and Spanish7,000+ wordsNo accounts, no ads
Word of the day
mellifluous
Pleasing to the ear.
Discover
One word at a time. No noise.
LEXO shows one word full screen: its definition, part of speech and pronunciation. Swipe up for the next one, like turning the pages of a good dictionary.
English and SpanishVocabulary in two languages, and the app in yours.
- Hear every word
Pronunciation with your iPhone's voices, at the speed you prefer.
Favourites, saved and collectionsBuild your own personal dictionary.
Beautiful words
Words you'll want to use.
A small taste of what's inside. Easy, intermediate and advanced words — you choose your level.
ethereal
Characterized by lightness and insubstantiality; as impalpable or intangible as air.
wistful
Showing pensive sadness.
redolent
Having a strong pleasant odor.
ebullient
Joyously unrestrained.
sanguine
Confidently optimistic and cheerful.
Spanish spelling
Learning Spanish? Four spelling games.
For Spanish vocabulary, LEXO includes four spelling games — B or V, G or J, H or no H, LL or Y — with the rule explained and a personal best for each one.
B or V?
absorber or absorver?
G or J?
tejer or teger?
H or no H?
cohibir or coibir?LL or Y?
concluyente or conclullente?Challenges
Practice can be beautiful too.
Burst
Ten quick questions. One a day, free.
Sprint
Sixty seconds to get as many right as you can.
Synonyms
Find the word that means the same. Spanish vocabulary for now.
Find your level
Thirty relaxed questions to measure your vocabulary.
Smart review
LEXO schedules your reviews so you don't forget.
Find the word
Read the definition and choose the right word.
By kind of word
Verbs, nouns, adjectives, short or long words.
Widgets
A word on your Home Screen or Lock Screen.
The app
Designed for iPhone.
Light and dark, large text, VoiceOver and Reduce Motion. LEXO respects how you use your iPhone.
Privacy
Your words are yours.
No accounts
No sign-up. Your progress stays on your iPhone.
No ads, no tracking
No advertising, no third-party analytics, no tracking across apps.
Gentle reminders
Three words a day (9:00, 15:00 and 20:00). Turn them off anytime in Settings.
Premium
Free to discover. Premium to go further.
Discovering words, widgets and one Burst a day are free. LEXO Premium is an annual subscription that unlocks everything.
- Every challenge and all four spelling games
- Every category and kind of word
- Smart review and mistake review
- Your full progress and statistics
Price and free trial, when available, are shown in the app before you subscribe. Cancel anytime in your iPhone Settings.
FAQ
Frequently asked questions
Which languages does LEXO support?
Vocabulary in English and Spanish, and the app itself in English or Spanish.
How many words are there?
More than 7,000 words across English and Spanish, in three levels: easy, intermediate and advanced. The catalogue keeps growing.
Do I need an account?
No. LEXO works without sign-up and keeps your progress on your iPhone.
What's free?
Discovering words, hearing their pronunciation, favourites and collections, widgets and one daily Burst.
What do I need?
An iPhone running iOS 17 or later.
Start today with one word.
Beautiful, precise and yours.
Coming soon on theApp Store