Last updated: 11.08.2025
Welcome to zerozerofournine.com and the mobile application “Deutsch Deck” . These services are owned and operated by Srijith Kariyattil (Einzelunternehmen) , based in Germany, trading under the brand name Zero Zero Four Nine .
Throughout these Terms and Conditions, the terms “we”, “our”, and “us” refer to Srijith Kariyattil (Einzelunternehmen).
By accessing or using this website, downloading or using the Deutsch Deck mobile application (iOS or Android), purchasing our products, subscribing to our services, or otherwise engaging with our services, you agree to be bound by these Terms and Conditions in their entirety.
If you do not agree with any part of these Terms, you must not use this website, download or use the mobile application, or purchase our products.
These Terms and Conditions govern:
The use of zerozerofournine.com
The use of the Deutsch Deck mobile application (iOS & Android)
All related services
All digital products offered through these platforms
All subscription-based services
They apply to all users, customers, and visitors worldwide.
Additional terms may apply to specific products or services (e.g., subscription billing terms via Apple or Google), and these will be made available to you before purchase if applicable.
The website and mobile application are operated by:
Srijith Kariyattil (Einzelunternehmen)
trading under the brand name “Zero Zero Four Nine”
c/o Postflex #9448
Emsdettener Str. 10
48268 Greven
Germany
Email: srijith@zerozerofournine.com
No VAT ID is currently available.
We offer digital products such as relocation guides, online courses, and informational resources designed to help individuals move to and build a successful life in Germany. We make every effort to ensure that product descriptions are accurate; however, we reserve the right to update or modify product content, features, and pricing at any time without prior notice.
The Deutsch Deck app is a digital language-learning tool that provides:
Flashcard-based German vocabulary learning
CEFR-level structured study (A1–C2)
Spaced repetition scheduling
Progress tracking
Leaderboard features
Optional paid subscription features (“Plus”)
We reserve the right to:
Modify app features
Add or remove functionality
Adjust free-tier limitations
Change subscription pricing
Update or discontinue parts of the service
Certain app features require account registration.
You agree to:
Provide accurate and complete information
Keep your login credentials confidential
Not share your account with others
Notify us immediately of unauthorized access
We reserve the right to suspend or terminate accounts in cases of misuse, fraud, manipulation of leaderboards, or violation of these Terms.
All orders placed through this website are processed securely through trusted third-party payment processors such as Stripe and PayPal. We do not store or have access to your full payment card information.
Prices are listed in the applicable currency and may be subject to currency conversion fees, bank charges, or applicable taxes depending on your location.
Paid subscriptions within the app are processed exclusively through:
Apple App Store (iOS)
Google Play Store (Android)
By purchasing a subscription, you agree to the billing terms of the respective platform provider. We do not manage, process, or store payment card information for in-app subscriptions.
App subscriptions renew automatically unless cancelled before the renewal date through your Apple or Google account settings. We cannot cancel subscriptions on your behalf.
Digital products purchased via the website are delivered electronically, typically via email or direct download link, immediately after payment is confirmed.
While delivery is normally instantaneous, please allow up to 24 hours in case of technical delays.
Customers must ensure that their email address is accurate and able to receive messages from our domain.
Access to app features is provided immediately upon:
Successful account creation, or
Successful subscription purchase
Access depends on device compatibility, operating system requirements, and availability of the Apple App Store or Google Play Store. We do not guarantee uninterrupted availability.
Due to the non-returnable nature of digital goods, all sales are final once:
A download link or access details have been issued (website), or
Access to digital content has been granted (app subscription).
No refunds or exchanges will be granted except where required by law.
In accordance with EU consumer protection regulations, customers residing in the EU have a statutory right to withdraw from a purchase within 14 days; however, by confirming immediate delivery of digital content, you expressly waive this right in accordance with §356(5) BGB and Art. 16(m) of the EU Consumer Rights Directive.
Refund handling for app subscriptions is subject to Apple’s and Google’s policies.
All materials on zerozerofournine.com and within the Deutsch Deck app, including but not limited to:
Text
Flashcard databases
Audio files
Software code
Images
Videos
Graphics
Logos
Downloadable files
are the intellectual property of Srijith Kariyattil (Einzelunternehmen) or licensed third parties.
You may not:
Copy, reproduce, distribute, or resell content
Reverse engineer or decompile the app
Extract flashcard databases
Use content for commercial purposes
Create derivative works
without prior written consent.
Unauthorized use may result in legal action.
The information provided on this website and within our products and app is for general informational and educational purposes only. It does not constitute legal, immigration, educational, or professional advice, nor does it replace consultation with qualified professionals or relevant authorities.
We cannot guarantee:
Specific learning outcomes
Language proficiency
Exam success
Immigration success
Relocation results
You are solely responsible for verifying information before acting on it.
To the fullest extent permitted by law, we accept no liability for any direct, indirect, incidental, or consequential damages arising from:
Use of our website
Use of the mobile application
Purchase of digital products
Subscription services
Inability to access services
Data loss due to user actions
Our liability shall in no case exceed the total amount you paid for the product or subscription in question.
Nothing in these Terms excludes liability for:
Intentional misconduct
Gross negligence
Injury to life, body, or health
Mandatory statutory liability under German law
Your use of our website and app is governed by our Privacy Policy:
https://www.zerozerofournine.com/privacy-policy
These Terms and Conditions are governed by the laws of Germany.
Any disputes arising from the use of our website or mobile application shall be subject to the exclusive jurisdiction of the German courts, except where consumer protection laws in your country of residence apply otherwise.
We reserve the right to update or modify these Terms and Conditions at any time.
The latest version will always be available:
On our website
Within the mobile application
Continued use of our services constitutes acceptance of the updated Terms.
If you have questions regarding these Terms and Conditions, you can reach us at:
Srijith Kariyattil (Einzelunternehmen)
trading as Zero Zero Four Nine
c/o Postflex #9448
Emsdettener Str. 10
48268 Greven
Germany
Email: srijith@zerozerofournine.com
© Copyright 0049 Zerozerofournine