Last updated: 30 October 2026
This website, browser extension, and the Dejavu English mobile applications for iOS, iPadOS, and Android (collectively, the “Service” or “Services”) are operated by Dejavu English. Throughout the Services, the terms “we”, “us” and “our” refer to Dejavu English and its legal operator, Seljuk Solutions Ltd (registered in the United Kingdom, Companies House company number SC776423). Dejavu English offers this website, mobile applications, browser extensions, and all related information, tools, and learning Services to you, the user, conditioned upon your acceptance of all terms, conditions, policies, and notices stated here.
By visiting our site, creating an account, downloading or using the Dejavu English mobile application, and/or purchasing a subscription from us or via an authorized app marketplace (Apple App Store or Google Play Store), you engage in our “Service” and agree to be bound by the following terms and conditions (“Terms of Service”, “Terms”, or “EULA”), including our Privacy Policy and Cancellation & Refund Policy incorporated herein by reference.
Please read these Terms of Service carefully before accessing or using our website or mobile applications. If you do not agree to all the terms and conditions of this agreement, then you may not access the website, mobile applications, or use any Services.
By agreeing to these Terms of Service, you represent that you are at least the age of majority in your country, state, or province of residence, or that you are the age of majority and have given your consent to allow any of your minor dependents (aged 13 or older, or the applicable minimum digital consent age in your jurisdiction) to use the Services under your supervision.
You are responsible for maintaining the confidentiality of your account credentials and password. You may not use our products or Services for any illegal or unauthorized purpose nor may you, in the use of the Service, violate any laws in your jurisdiction (including but not limited to copyright laws).
You must not transmit any worms, malware, or viruses or any code of a destructive nature. A breach or violation of any of the Terms will result in an immediate termination of your Services.
We reserve the right to refuse service to anyone for any reason at any time.
You understand that your content (not including payment card information) may be transferred over networks and involve transmissions and adaptations to conform to technical requirements of connecting networks or devices. All API, authentication, and payment communications are encrypted in transit using HTTPS/TLS.
You agree not to reproduce, duplicate, copy, sell, resell, or exploit any portion of the Service, use of the Service, or access to the Service without express written permission by us.
Educational content, dictionary entries, translations, phonetic transcriptions, and AI-generated language explanations provided in the Service are for educational and informational purposes. While we strive for high linguistic accuracy, automated and AI-assisted outputs may occasionally contain errors or inaccuracies, and any reliance on the material in the Service is at your own risk.
Prices for our subscription plans are subject to change in accordance with applicable law and app marketplace rules (Apple App Store, Google Play Store, or Stripe). Where required, you will receive advance notice of any recurring subscription price change before it takes effect.
We reserve the right at any time to modify, improve, or discontinue features of the Service. We shall not be liable to you or to any third party for routine feature updates or modifications.
Dejavu English provides digital English-learning tools, spaced-repetition (SRS) vocabulary and phrase notebooks, reading tools, grammar lessons, pronunciation exercises, and AI-powered writing/language assistants accessible across web, browser extension, iOS, and Android.
We reserve the right, where permitted by law, to limit the sales of our Services to any person, geographic region, or jurisdiction on a case-by-case basis. We do not warrant that any errors in machine-operated or AI-generated outputs will always be free from error.
You agree to provide current, complete, and accurate account information and to promptly update your email address and billing details (on our website or within your Apple ID / Google Play account, as applicable) so that your transactions and account notifications can be completed properly.
For full details regarding subscription cancellations and refunds, please review Section 21, Section 22, Section 23 below and our Cancellation & Refund Policy.
Certain features of Dejavu English (including Sentence Fixer, Passage Analyser, Native Thinking, Contextual Paragraphs, Grammar Explanations, and AI Mnemonics) utilize third-party artificial-intelligence and speech processing services (such as OpenAI, Google Gemini, Google Cloud Speech/Text-to-Speech, and Deepgram) through our secure backend API.
You acknowledge that AI-generated suggestions are provided “as is” and “as available” for educational assistance. You agree not to submit sensitive personal data, confidential third-party data, or unlawful content into AI prompts. Details of how AI sub-processors handle data are set out in our Privacy Policy.
Certain reading materials, news RSS items, or user-imported articles available via our Service may link to or originate from third-party websites not affiliated with us. We are not responsible for examining or evaluating the content or accuracy of third-party websites and assume no liability for third-party materials.
If you voluntarily submit product feedback, feature suggestions, or bug reports to us, you agree that we may use such feedback without restriction or compensation to improve Dejavu English. Your private vocabulary notebooks, notes, and study progress remain private to your account and are governed by our Privacy Policy.
Your submission of personal information through the website, browser extension, and mobile applications is governed by our Privacy Policy.
Occasionally there may be information on our site or in the Service that contains typographical errors, inaccuracies, or omissions relating to service descriptions, pricing, promotions, or availability. We reserve the right to correct any errors, inaccuracies, or omissions and to update information as permitted by law.
In addition to other prohibitions set forth in these Terms, you are prohibited from using the site, mobile apps, or content: (a) for any unlawful purpose; (b) to solicit others to perform or participate in any unlawful acts; (c) to violate any international, national, or local regulations, rules, or laws; (d) to infringe upon or violate our intellectual property rights or the intellectual property rights of others; (e) to harass, abuse, defame, or discriminate; (f) to submit false or misleading information; (g) to upload or transmit viruses or malicious code; (h) to scrape, crawl, reverse-engineer, or abuse our APIs or AI endpoints via automated bots; or (i) to interfere with or circumvent the security features of the Service. We reserve the right to suspend or terminate your access for violating any of the prohibited uses.
We do not guarantee, represent, or warrant that your use of our Service will be uninterrupted, timely, secure, or error-free, or that educational results obtained from the use of the Service will meet specific exam or proficiency outcomes.
Except as expressly required by mandatory consumer protection law, the Service is provided “as is” and “as available” without warranties or conditions of any kind, either express or implied, including implied warranties of merchantability, fitness for a particular purpose, durability, title, and non-infringement.
To the maximum extent permitted by applicable law, in no case shall Seljuk Solutions Ltd (Dejavu English), our directors, officers, employees, affiliates, agents, contractors, suppliers, service providers, or licensors be liable for any indirect, incidental, punitive, special, or consequential damages of any kind, including lost profits, lost revenue, lost savings, or loss of data arising from your use of the Service.
You agree to indemnify, defend, and hold harmless Seljuk Solutions Ltd (Dejavu English) and our affiliates, officers, directors, agents, service providers, and employees from any claim or demand, including reasonable legal fees, made by any third party due to or arising out of your breach of these Terms of Service or your violation of any law or the rights of a third party.
In the event that any provision of these Terms of Service is determined to be unlawful, void, or unenforceable, such provision shall nonetheless be enforceable to the fullest extent permitted by applicable law, and the unenforceable portion shall be deemed severed without affecting the validity of remaining provisions.
The obligations and liabilities of the parties incurred prior to the termination date shall survive the termination of this agreement for all purposes. These Terms of Service are effective unless and until terminated by either you or us. You may terminate these Terms at any time by canceling any active subscription, deleting your account, and ceasing use of our Services.
The failure of us to exercise or enforce any right or provision of these Terms of Service shall not constitute a waiver of such right or provision. These Terms and any policies posted by us constitute the entire agreement between you and us regarding the Service.
These Terms of Service and any separate agreements whereby we provide you Services shall be governed by and construed in accordance with the laws of the United Kingdom, without prejudice to mandatory consumer protection rights applicable in your country of residence.
You can review the most current version of the Terms of Service at any time at this page. We reserve the right to update or replace parts of these Terms by posting updates to our website. Your continued use of the Service following the posting of any changes constitutes acceptance of those changes.
Service Provider / Developer: Seljuk Solutions Ltd (operating as Dejavu English), Companies House No. SC776423, United Kingdom.
Questions about these Terms of Service, billing, or legal notices can be sent to info@dejavuenglish.com or by clicking:
Dejavu English offers both a free tier and paid auto-renewing Dejavu English Pro subscriptions (available on Monthly and Annual billing cycles):
You may permanently delete your Dejavu English account at any time directly inside the Dejavu English mobile application or logged-in web application (Settings → Delete Account, confirmed with your account password) or by submitting a deletion request via our Account Deletion page.
Deleting your account permanently and irreversibly erases your profile, saved words, phrases, notes, grammar notebooks, spaced-repetition progress, AI history archives, and linked notification devices from our active databases.
IMPORTANT — DELETING YOUR ACCOUNT DOES NOT CANCEL YOUR PAID SUBSCRIPTION:
Deleting your Dejavu English account or uninstalling the mobile app does NOT automatically cancel an active paid Pro subscription billed through the Apple App Store, Google Play Store, or Stripe. App marketplaces manage recurring subscriptions independently under your Apple ID or Google Account.
If you have an active paid Pro subscription (non-trial), you must manually cancel auto-renewal in your Apple App Store Subscription Settings (on iOS/iPadOS) or Google Play Store Subscriptions (on Android) — or via your web billing portal if subscribed on the web — at least 24 hours before your next renewal date to avoid future billing charges.
Refund eligibility and procedures depend on the platform through which you purchased your subscription:
GPA.xxxx-...).If you download or access the Dejavu English mobile application from the Apple App Store, the following mandatory terms apply in addition to the rest of these Terms of Service: