YiWords

Terms of Service

Last revised on 28 June 2026

Overview

The YiWords mobile application and the yiwords.com website (collectively, "the Service") are operated by IOIGAME LTD (a company incorporated under the laws of England and Wales, hereinafter referred to as "IOIGAME", "we", or "us"). By accessing or using the Service, you acknowledge that you have read and agree to these Terms, as well as the Privacy Policy and Community Guidelines, which are incorporated by reference. We may revise these Terms from time to time; material changes will be announced within the Service or on this page, and the revision date will be updated. Such changes will take effect either seven (7) days after announcement or upon your continued use of the Service after the changes (whichever is earlier). If you do not agree, please do not use the Service.

1. Description of the Service

The Service is designed for language learning and provides learning cards, dictionaries and pronunciation, quizzes and games, streaks and study reminders, as well as gamified and value-added features such as energy, coins, items, and membership for languages including Vietnamese and Simplified Chinese. We may add, modify, suspend, or discontinue any part of the Service at any time.

2. Eligibility

You must have the legal capacity to enter into a binding contract in order to use the Service; minors should use the Service only with the consent and supervision of a parent or guardian. The Service is intended for a general audience and does not knowingly collect personal information from children.

3. Accounts

Certain features of the Service are available to guest users, while others require registration. You may log in via email verification code, Google, Apple, or by scanning a code on the desktop version. You must provide accurate information, keep your account credentials secure, and are responsible for all activities under your account (including payment obligations); accounts are for your personal use only and may not be transferred. After logging in, your learning progress and other data may be synchronised across devices under your account. If you suspect your account has been compromised, please contact support@ioigame.com as soon as possible.

4. Acceptable Use

You must comply with the Community Guidelines and all applicable laws. You must not: post illegal, infringing, abusive, harassing, obscene, or hateful content; infringe the intellectual property or privacy rights of others; impersonate others; post spam or unrelated promotions; use scraping, crawling, reverse engineering, or similar methods to obtain content or interfere with the Service; or circumvent mechanisms such as energy, coins, subscriptions, advertisements, or device verification. In case of violation, we may remove content, restrict features, or suspend or terminate your account.

5. User Content

You are responsible for any content you submit through the Service (such as nickname, avatar, notes, corrections, and feedback) and warrant that you have the necessary rights to do so. You grant IOIGAME a non-exclusive, royalty-free licence to use such content as necessary for the operation and improvement of the Service; this licence terminates upon deletion of the content (except for reasonable backups). You must not submit content that is illegal, infringing, or offensive.

6. Intellectual Property

All content of the Service (including design, text, definitions, example sentences, images, audio, software, and their arrangement), as well as the names and marks "YiWords" and similar, are owned by IOIGAME or the relevant rights holders and are protected by law. Except as expressly permitted by these Terms, you may not copy, distribute, adapt, or use such content by scraping, data mining, or similar means. Statistical data generated by your learning and other activities is owned by IOIGAME, but this does not affect your rights regarding personal data under the Privacy Policy. If you believe any content on the Service infringes your rights, please send the necessary information to support@ioigame.com and we will handle it in accordance with the law.

7. Virtual Items and Gamification

Energy, coins, chests, items, experience, levels, and similar are virtual items for use only within the app; they have no real-world monetary value and cannot be redeemed, transferred, or traded. You are granted only a limited, revocable licence to use them. We may adjust their rules, pricing, or validity period, and may revoke items obtained through cheating or violation. Upon account closure, related items become invalid and no compensation will be provided.

8. Membership Subscription

The Service offers paid membership (VIP), with benefits and pricing as shown on the in-app membership page. Subscriptions are completed via Apple App Store in-app purchase and will automatically renew for the selected period unless you cancel at least 24 hours before the end of the current period; fees are charged by Apple to your Apple ID. You may manage or disable auto-renewal at any time in your App Store account settings; after cancellation, you may continue to use the membership until the end of the current period.

9. Promotional Codes

We may offer promotional codes or "promo cards" redeemable for membership trials, discounts, or virtual items. Unless otherwise specified, promotional codes have no cash value, are generally redeemable only once, may have an expiry date or usage limit, and may not be resold or transferred. We may modify or terminate promotional codes at any time; in cases of abuse or unauthorised redemption, we may void and revoke related benefits without refund.

10. Payment and Refunds

In-app purchases and subscriptions are processed by Apple App Store under its terms; we do not collect or store your payment credentials. Except as required by law or otherwise provided in these Terms, payments are non-refundable and no compensation is provided for virtual items or used membership time; refunds are handled by Apple (App Store → your Apple ID → Purchase History → Report a Problem). We may, at our discretion, grant refunds, but this does not create an obligation to do so in the future. This clause does not affect your statutory consumer rights under applicable law.

11. Advertising and Third Parties

The Service may display advertisements (including rewarded videos, such as "watch ads to earn energy"); data processing related to ads is detailed in the Privacy Policy, and members may enjoy an ad-free experience. The Service may link to third-party websites or services, which are operated by the respective third parties and governed by their terms; we are not liable for any loss arising from your use of third-party content.

12. Apple Terms

For Apps obtained via the Apple App Store, you acknowledge: these Terms are between you and IOIGAME only, not with Apple, and Apple bears no responsibility for the App's maintenance, support, or warranty. If the App does not conform to an applicable warranty, you may request a refund of the purchase price (if any) from Apple. Claims relating to the App (including product liability, compliance, and intellectual property infringement) are the responsibility of IOIGAME, not Apple. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you. You may not reverse engineer, decompile, or derive source code from the App.

13. Disclaimer and Limitation of Liability

The Service is provided "as is". To the fullest extent permitted by law, we make no express or implied warranties (including merchantability, fitness for a particular purpose, non-infringement, or uninterrupted or error-free operation); learning content (including AI-assisted definitions and images) may be inaccurate and is for reference only. To the fullest extent permitted by law, we are not liable for any indirect, incidental, or consequential damages arising from your use of or inability to use the Service; our total liability is limited to the amount you paid for the Service in the 12 months preceding the event giving rise to liability (if any). Nothing in this clause excludes liability that cannot be excluded by law (such as for death or personal injury caused by negligence, or for fraud).

14. Termination

You may stop using the Service and delete your account at any time. If you breach these Terms or engage in suspected fraudulent or illegal activities, we may restrict, suspend, or terminate your access and delete related data. Upon termination, provisions that by their nature should survive (such as intellectual property, limitation of liability, and dispute resolution) shall remain in effect.

15. Indemnity

To the extent permitted by law, you agree to defend, indemnify, and hold harmless IOIGAME and its affiliates from and against any claims and losses (including reasonable costs) arising from your use of the Service, your breach of these Terms, or any content you submit.

16. Governing Law and Disputes

These Terms are governed by the laws of England and Wales and subject to the jurisdiction of its courts; if you are a consumer, you may also bring proceedings in the courts of your habitual residence, and your statutory protections under local mandatory law are not affected. Before commencing formal proceedings, we encourage you to contact us at support@ioigame.com to seek an amicable resolution.

17. Miscellaneous

The Simplified Chinese version of these Terms shall prevail (if translations in other languages are provided, they are for reference only). These Terms constitute the entire agreement between the parties regarding the Service; if any provision is found invalid, the remaining provisions remain effective; our failure to exercise any right does not constitute a waiver. You may not assign these Terms without our consent; we may assign them. Operating entity: IOIGAME LTD (registered in England and Wales). If you have any questions, please contact us via the in-app "Feedback" feature or by email at support@ioigame.com.