Slang offers an unprecedented variety of comprehensive, career-specific English courses. Our adaptive English learning app optimizes your learning experience in real time, getting to know you as a learner and presenting you with the study experience you need based on how where you are in your English-learning journey. Other solutions all follow the same one-size-fits-all approach, teaching only the highest-frequency terms, covering less than 1% of the English language and leaving out the field-specific knowledge you need to be a bilingual professional. Slang is here to help you go beyond basic English and unlock your potential by making English-language knowledge around the world accessible to you.

If you’re a new user, you’ll receive a free 7-day trial to Slang Pro and get a chance to explore the comprehensive selection of professional English courses we offer. After your trial, subscribe to Slang Pro for unlimited access to all Slang courses and features.


Study only what you don’t know: stop wasting time on one-size-fits-all solutions. Slang builds a personalized learning experience so that you study only what’s new for you.

• We make things easy: translations and explanations in your native language support you while you build toward total immersion.

• Reach fluency quickly: our adaptive technology measures your proficiency in real time and selects the study material and activities that will help you progress faster.

• A lifelong learning companion: your knowledge syncs across all of our English courses, so you can easily study new topics without repeating content.

• A comprehensive solution: our wide variety of exercises helps you master all four language skills — reading, writing, listening, and speaking.


Slang Pro is the world-class solution for learning professional English, available for organizations and individuals.

Our B2B offering — for businesses, universities, and ESL schools — includes extensive support for developing bilingual programs along with our app itself. Please visit our website to learn more about the Customer Success Program, the Academic Consultancy, and other features included for each organization type.

Our service for individuals is available via in-app purchase with a monthly or annual auto-renewing subscription. Your account will be charged at confirmation of purchase, and Slang Pro will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Accounts will be charged for renewal within 24 hours of the end of the current period. Your Slang Pro subscription may be managed or cancelled in your account settings after purchase. Any unused portion of your account's 7-day trial will be forfeited upon subscription.

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If you have any comments or feedback, please reach out! You can reach us via email at

What’s New

Version 1.10.10

This release improves our completely revamped, state-of-the-art speech recognition. An intuitive scoring system provides specific feedback on your spoken English, down to the individual sounds within each word. You can also play sample pronunciations to help you practice each specific sound.

Additionally, this release includes several new professional and soft-skill courses, such as Delivery and Transportation Networks and Medical Specialties.

Ratings and Reviews

5.0 out of 5
19 Ratings

19 Ratings

Caralanademesa ,

The most helpful app to learn English!

I have been using this app to improve my vocabulary and grammar and 3 months later I can say it’s soooo effective! I love it, I totally recommend it!

Diani M ,

I love it!

Great app! It’s very easy to use and very helpful!

Mike Bahia ,

Amazing app!

This application is amazing! It's a must use.

App Privacy

The developer, Lengio Corporation, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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