SignDict is the first

Japanese and American

Sign Language dictionary translation application

SwiftUI

SignDict is built using SwiftUI. Simple. Easier. Powerful. This is an app designed to make development simpler and more easy and efficient with Apple software, thanks to the capabilities of SwiftUI.

Study Sign Language when you are Offline

With SignDict, you can study American or Japanese Sign Language anytime, anywhere, without needing an internet connection. Our offline mode ensures that you have access to thousands of signs languages, helping you learn and practice at your convenience, even without cellular data or Wi-Fi.

  • "SignDict is simpler and faster to search than needing two books."

    - Ryouta

  • "SignDict helps me find Japanese Sign Language by matching it with American Sign Language."

    - Ken

  • "I hope we can learn together, grow together, and communicate each other with love. When we are living in the international. SignDict brings us closer, bridging JSL and ASL for everyone"

    - ɴᴀʙɪʟᴀ

  • "I have wanted to study ASL for a long time, but never have enough time to attend in-person ASL classes. So I was never able to start studying ASL. But I finally found this app that allows me to learn ASL anytime, anywhere! I really like it!"

    @Aya_Aya_handsighn.joi (Instagram)

“A GOOD FRIEND OF MINE from japan WHO'S DEAF SUGGESTED an IDEA TO me about COMBINING TWO LANGUAGES INTO ONE PLATFORM in order to HELP HIM AND EVERYONE TO LEARN both SEAMLESSLY and WITHOUT NEEDING TO TEACH EACH OTHER. HIS IDEA INSPIRED ME TO CREATE A SOLUTION THAT CAN HELP EVERYONE LEARN EFFORTLESSLY.”

— Antonio Chavez (Founder & iOS Developer)

Meet the Team

  • Antonio Chavez

    IOS DEVELOPER \ FOUNDER

  • Joshua Smith

    BUG DEVELOPERS

  • Shinji Sayama

    DEAF JAPANESE

  • Ryouta Ootake

    DEAF JAPANESE

 FAQs

  • SignDict is a comprehensive and user-friendly Japanese and American Sign Language translation dictionary, thoughtfully designed to support both learners and professionals in their language journey.

  • I’m Deaf myself, and I created this project to truly listen to the Deaf community. My goal is to build a sign language dictionary that respects how sign languages are designed and shared by Deaf people. I believe sign language belongs to the community, so your feedback helps improve it for everyone. SignDict supports learning across the world, whether you're interested in Japanese Sign Language, American Sign Language, or both, this is a space to learn and grow together.

  • The founder of SignDict is Deaf and brings a personal connection to the project. This initiative was started by a Deaf person with the intention to truly center the experiences, perspectives, and rich knowledge of the Deaf community. SignDict is carefully built with deep respect for sign language, recognizing it as something created by and for Deaf people. It is not merely a translation tool but rather a cultural and community driven effort that values Deaf heritage and communication. As a Deaf individual, I care deeply about making SignDict a meaningful resource that we build collaboratively with the community, ensuring it reflects our collective sign language and needs.

  • No, SignDict is a one-time purchase of $9.99 on the App Store (and Play Store soon). After payment, you get lifetime access to all features.

  • Indeed, SignDict operates entirely offline. This feature enables users to study without the need for Wi-Fi or cellular data, making it prefect for flights, trips, or remote locations.

  • While AI is a popular topic, some of you might wonder if SignDict is AI-generated. The answer is no! SignDict is not AI-driven. We firmly believe in supporting human creativity and skills, rather than replacing them with AI, which can harm our natural abilities and growth in the society.

    SignDict is proudly designed and built by legitimate Deaf individuals from both Japan and America, working together to create something meaningful for everyone. It’s about respect, love, and valuing human’s talent!

  • SignDict supports both Japanese Sign Language (JSL) and American Sign Language (ASL).

  • Indeed, SignDict incorporates practice exercises for spelling in both Japanese and American Sign Language, thereby augmenting your learning experience.

  • Yes, once you purchase SignDict, you will receive all future updates at no additional cost.

  • SignDict’s goal is to actively listen to the community and continuously improve. Unlike other app or books platforms that rarely update the issues, but SignDict committed to keeping SignDict active for improvement. If you find an outdated or incorrect sign, please send it through our feedback form. I personally review every message and fix issues quickly! Your input helps us build the biggest and most reliable sign language dictionary, shaped by the Deaf community.

  • You can reinstall SignDict anytime from the App Store without additional charges, as long as you use the same Apple ID.

  • If any user attempts to steal, screenshot, or share SignDict content for free to avoid payment or bypass app ownership, legal action will be taken.

signdict is huge future

SignDict Pro will be 3D anime character with 360° view support.

Experience the future of sign language technology, now reimagined with cutting-edge features. SignDict Pro brings your imagination to life with 3D animations, unparalleled performance, and seamless integration across all. your favorite devices,

Coming soon

Privacy. Not a Feature, a Foundation.

Your data belongs to you — not to us.

  • Open the app and begin your learning journey immediately, with no need to sign up and no unnecessary obstacles to slow you down.

  • SignDict highly values your privacy and is committed to protecting it. The app does not collect, store, or share any personal data from its users. Additionally, we do not require you to create an account, and there are no advertisements served within the app, ensuring a completely private and uninterrupted experience.

  • Since SignDict operates entirely offline, it does not track any internet activity or collect any usage data from its users.

  • The app does not integrate with any third-party services, which helps ensure that your data remains secure and private at all times.

  • No Google trackers are included, no Facebook code is present, no cocoapods SDK is used, and there are absolutely no hidden partners involved.

  • The app’s design carefully ensures maximum privacy and security by storing all data locally on the device only, without relying on external servers or cloud services.

  • Because SignDict does not collect any personal data from its users, there is no requirement for data deletion processes or any account management features. This approach simplifies user interactions and ensures privacy is maintained without additional administrative steps.

  • There is no collection or secret collection involved. SignDict is solely dedicated to being an education-focused app.

  • SignDict provides a clean and uncluttered space, completely free from pop-ups, banners, or any form of behavioral tracking.

  • No distractions at all. Absolutely no marketing messages included.

  • No large corporation supports us. We are simply a dedicated developer who genuinely respects both your valuable time and the trust you place in us.

Download THE APP

Now Available on the App Store!
If you're using an iPhone, iPad, or iPod touch, you can now download the SignDict App directly from the App Store! Developed in SwiftUI, SignDict offers a seamless and intuitive user experience tailored for Apple devices.
For Android and Samsung Users
We sincerely appreciate your patience and support as we work toward releasing SignDict on the Google Play Store. While my development expertise is focused on SwiftUI for Apple platforms, building the Android version requires C# and a different set of tools.

Unfortunately, progress has been delayed due to challenges with unreliable developers. I'm actively seeking a skilled and trustworthy Android developer—someone who builds with integrity and avoids AI-generated shortcuts without proper citation or understanding.

Your experience matters, and I’m fully committed to bringing SignDict to Android and Samsung platforms.
Stay tuned—it’s a promise.

COMING SOON!

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