Slang: Professional English 4+

Learn professional English‪!‬

Lengio Corporation

Designed for iPad

    • 5.0 • 21 Ratings
    • Free



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.

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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 2.6.258

This release focuses on behind-the-scenes work to improve your experience with our mobile app!

Don't forget to tell us what you think about the update! We always carefully analyze user feedback with the aim of integrating your suggestions into our roadmap to make your learning experience as smooth as possible.

Ratings and Reviews

5.0 out of 5
21 Ratings

21 Ratings

Carogargon ,

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!

sofis f ,

Amazing and useful app

This app will skyrocket your English vocabulary. 10/10 would recommend

Diani M ,

I love it!

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

App Privacy

The developer, Lengio Corporation, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • User Content
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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