LEO dictionary

Contains adsIn-app purchases
4.2
38.6K reviews
10M+
Downloads
Content rating
Everyone 10+
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About this app

The application offers access to the LEO dictionaries, vocabulary trainer and forums.


Dictionaries


LEO’s online dictionaries are always up to date (no updates necessary).


★ English ⇔ German (840,000 entries)
★ French ⇔ German (279,000 entries)
★ Spanish ⇔ German (258,000 entries)
★ Italian ⇔ German (256,000 entries)
★ Chinese ⇔ German (236,000 entries)
★ Russian ⇔ German (368,000 entries)
★ Portuguese ⇔ German (166,000 entries)
★ Polish ⇔ German (98,000 entries)
★ English ⇔ Spanish (226,000 entries)
★ Spanish ⇔ Portuguese (76,000 entries)
★ English ⇔ French (60,000 entries)
★ English ⇔ Russian (54,000 entries)

With LEO you can do more than just look up the meaning of a word in a different language. LEO also provides:


☆ noun and verb tables
☆  real voice audio pronunciation (nospeech synthesis)
☆ definitions
☆ grammar and etymology,

as well as other information relevant to the search term(s) including


☆ orthographically similar words
☆ possible base forms for inflected words
☆ links to forum discussions containing the search term(s)


Vocabulary trainer


Use our free vocabulary trainer to create personal word lists and improve your vocabulary. We use a two-way synchronization method, which means you can access all your word lists on your mobile devices or on your desktop, all you need is a free account.



Forums


Connect with other users and get help with language-related questions that are not answered by the dictionary. To participate in the forums all you need is a free user account.


The app contains adverts which you can choose to remove by subscribing to our ad-free version.


For a detailed description of all features, please visit ­https://www.leo.org
Updated on
Jul 24, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Financial info and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.2
36.5K reviews
Hannah Rutledge
July 28, 2025
Recent problems with the trainer: in the web version, you can't revisit the words you didn't know ("finish" is the only option). Neither the web version nor the app automatically say the vocabulary word in the trainer like it used to. Now you have to click the word, which means you read it first instead of practicing listening. Leo is much less useful now sadly, especially since I've spent years building up my vocabulary lists.
2 people found this review helpful
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Andres Ardila
November 21, 2023
The dictionary itself is quite good, the app with its outdated UI and its "unique" color scheme not so much. The UX isn't great either, tapping on a forum discussion, for example, usually just leads the user to some sort of mobile homepage, not the discussion itself; retrying a couple times usually (but not always) works. The forums are an important part of what the app has to offer, though, as the dictionary entries are sometimes incomplete or missing.
17 people found this review helpful
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LEO GmbH
September 26, 2017
Hi Andres, we're currently reworking the forums in the APP, but I'm afraid it will take some more time to be ready.
Jeff Drumm
December 25, 2024
I used to love the app before the redesign. The new design is slow to respond when entering a word to search, and sometimes the mobile keyboard doesn't appear to be able to type a word when tapping the search field. Some of the words have the option for pronunciation, but it is audio-to-text and pronounces the German word with English pronunciation. This app is now more of a headache to use. It used to be reliable, unfortunately not anymore.
4 people found this review helpful
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What’s new

Word lists for Westermann textbooks (Camden Town 5-8, Englisch für Gymnasien) available in the vocab trainer.