Helps Kids Learn While Having Fun

The future of man-machine interface is speech interactions coupled with emotional response.

With doubleYou! avatars you are always learning with a friendly and encouraging character!

Your doubleYou! Avatar is a Friend
who can
Deliver Messages


    Leon is the first of many!
    He speaks out loud.
    He understands natural language.
    Send him anywhere through messaging.


    Gameplay adapted to speech dialogue.
    Focused on affective relationships.


    Designed for Voice interaction gameplay.
    Doesn't require looking at the screen.

  • APPS

    Designed based on learning standards.
    Fully available off-line.
    Respect your privacy.

We believe in the power of voice associated with emotion to encourage education all around the World.


Math 8 has been named a finalist for the Best Gamification App 2019!

"Math 8 comes highly recommended by The EducationalAppStore"

Download here the complete review from EAS

Math 8 is the first educational mobile app that explores math using natural language processing!


More info about Math 8 app

Download the complete Math 8 program and updates on the App Store for free.


We are developing a set of learning apps for kids, parents, and teachers using speech technology combined with advanced natural language software agents.

Apps are available on the Apple Store for iOS devices with iOS 11.3 and up (iPhone 5S and iPad Air).
Apps support iMessage and Game Center (c) Apple technology.

Family sharing

Share the app with your whole family for free, apps are compliant with (c) Apple family sharing.

Augmented & Virtual Reality

These feature allow you to see the characters in the real world through the video camera of your iOS device, or to be immersed in virtual worlds. This feature is available for iPhone SE, 6S, iPad 2017 and iPad Pro.

All collected data is kept anonymous and used only to improve app's and user experience. You can rest assured that we won't use your personal information because we don't acquire any.

More info about Privacy

We have built years of expertise in the development of mobile applications and internet hosting technology.


We are a team with a passion for technology and educative multimedia content.

Rethinking Vocal Interactions Since 2012

The doubleYou! project is supported by the French Ministry of Economy and funded by BPI France (Public Bank of Investment).

  • Innovative technology

    We imagine new concepts and make them real. We are experts in software development, multimedia and machine learning. We provide 2D/3D and video characters, 3D animations, video movies or audio design. All our app contents are copyright (c) L&J SAS - Paris.

  • Partnerships

    We use third parties technology in our apps, such as Google and Apple speech and multimedia APIs. We use government standards such as the common core to design some of the quizzes and exercises for our WKids apps.