Terms of Use

1. Introduction

1.1 Pocket Apps Studio Pte. Ltd. (UEN 202549990M), with its registered office at 160 Robinson Road, #14-04 Singapore Business Federation Center, Singapore 068914 (hereinafter referred to as the “Provider”), provides the mobile application “XueTang”, a language learning platform designed to support users in acquiring and retaining Chinese vocabulary, grammar, and cultural knowledge. The app incorporates an advanced Flexible Spaced Repetition System (FSRS) to improve memory retention and offers a gamified experience through interactive exercises, collectible cultural outfits, and reward-based learning mechanics.

1.2 The app is available to download free of charge from the Apple App Store.

1.3 The following Terms of Use govern the legal framework for the use of the XueTang application.

2. Scope of application

The app is intended exclusively for private, non-commercial use. Use of the app is only permitted for personal purposes. Any commercial use or provision of services to third parties using the app without the express consent of the Provider is prohibited.

3. Use of the app, system requirements

3.1 To use the full functionality of the app — including saving progress, accessing exercises, and synchronizing personal learning data — the user must register an account. Registration is possible via email/password or third-party login providers (Apple or Google). Certain limited features may be accessible without registration.

3.2 To use the app, the user requires a compatible mobile device with an active internet connection. The user is responsible for ensuring that their device meets the technical requirements prior to installation.

3.3 The user must follow any usage notices and instructions provided within the app, including safety guidelines and operating recommendations. Failure to comply with such instructions may result in limited functionality or user disadvantages.

3.4 If technical issues, errors, or inconsistencies occur while using the app, the user should inform the Provider without undue delay. Upon request, the user shall assist the Provider in diagnosing the issue by describing the problem and, if needed, providing additional context.

3.5 The user agrees to install any software updates made available by the Provider, provided such updates do not fundamentally alter the nature or core content of the app. Updates will be announced when available and installed once the user connects to the internet.

4. Functionality

The scope of the app’s functions depends on whether the user uses the app in the free version (see Section 5) or has subscribed to the premium version (see Section 6). The free version provides access to a baseline set of language-learning features at no cost. The premium version unlocks extended functionality for the agreed subscription period. The exact features included in each tier are presented within the app and may be adjusted by the Provider from time to time, subject to Section 6.

5. Free version of the app

The free version of the app provides access to a baseline set of language-learning features at no cost. The features included in the free version are described in the app and may be expanded, reduced, or otherwise modified by the Provider from time to time at its sole discretion, in line with product evolution and continued maintenance of the Service. The Provider does not guarantee that any particular feature will remain part of the free version indefinitely. Some features, content, and tools are reserved for users with an active premium subscription.

6. Premium subscription

6.1 The user has the option to activate premium features by subscribing to the app. A premium subscription unlocks extended functionality beyond the free version. The specific features available under a premium subscription, the available subscription plans, their duration, and the corresponding prices are presented within the app at the time of purchase and form an integral part of the agreement entered into upon subscription.

The Provider reserves the right to add, modify, or remove features included in the premium subscription from time to time, provided that any such change does not materially diminish the value of the subscription for the remainder of the user’s current paid term. Where a material reduction in scope occurs during a paid term, the user shall be entitled to cancel the subscription with effect from the date of the change and request a pro rata refund through the Apple App Store.

6.2 The applicable prices for the premium subscription are displayed in the app. Payment is processed directly via the Apple App Store or the user’s linked payment method. Subscription terms, renewal conditions, and cancellation options are also managed via the App Store.

7. Scope of the rights of use and restrictions on use

7.1 The software on which the app and the various functions accessible via the app are based, as well as the content displayed in the app (including but not limited to vocabulary datasets, exercises, cultural illustrations, and companion elements), are protected by copyright. These copyrights are held by the Provider or its partners. The user is obligated to comply with applicable copyright laws. Any use beyond the ordinary operation of the app is prohibited. In particular, the user is not permitted to copy, distribute, or modify the software or its content for third parties.

7.2 The Provider grants the user a non-exclusive, non-transferable right to use the app solely for the purpose of learning Chinese language and culture. This right also includes access to features such as the personalized learning system, vocabulary exercises, companion elements, and software updates made available by the Provider.

7.3 The user may only reproduce, adapt, or decompile the software where explicitly permitted by applicable law, including the permitted acts under the Singapore Copyright Act 2021 (such as fair use and, where applicable, decompilation for the purpose of achieving interoperability with independently created software).

8. Warranty and liability

8.1 The Provider does not guarantee that the app will meet the individual expectations or specific learning outcomes of the user. The user is solely responsible for any content they contribute to the app, including custom vocabulary or personal input, and for the accuracy of that information.

8.2 The Provider and the user are liable for matters related to the use of the app in accordance with general statutory provisions, unless otherwise specified in the following clauses.

8.3 When using the free version of the app, the Provider is only liable for damages resulting from intentional or grossly negligent actions. Liability for ordinary negligence is excluded to the fullest extent permitted by law.

8.4 When using paid services, the Provider is fully liable for intent and gross negligence. In the event of ordinary negligence, liability is limited to damages that are foreseeable and typical for a contract of this nature, and only where the breach relates to an obligation the fulfilment of which is essential to the proper performance of the contract. Any further liability for ordinary negligence is excluded.

8.5 The Provider shall not be liable for indirect or consequential damages, including lost data, lost learning progress, or lost rewards.

8.6 The above limitations of liability do not apply in cases of injury to life, limb, or health, nor in respect of any liability that cannot lawfully be excluded or limited under applicable law — including under the Singapore Consumer Protection (Fair Trading) Act 2003 (CPFTA), the Sale of Goods Act 1979 (Cap. 393) (Singapore), the Unfair Contract Terms Act 1994 (Cap. 396) (Singapore), the EU/UK General Data Protection Regulation (GDPR), or equivalent mandatory consumer-protection laws in the user’s country of residence. Liability for fraudulently concealed defects or for any express guarantees given by the Provider also remains unaffected. For clarity, the Provider does not offer any guarantees unless explicitly stated.

8.7 The user agrees to indemnify the Provider against all damages and third-party claims arising from the unlawful use of the app or from a culpable breach of these Terms of Use. This also includes the costs and expenses incurred in the course of defending such claims.

9. Renewal of the premium subscription, termination

9.1 If the paid subscription is not cancelled at least 24 hours before the end of the agreed minimum term, the subscription will be automatically renewed under the conditions stated at the time of purchase. The user has the right to cancel the subscription at any time with 24 hours’ notice prior to the end of the current billing period.

9.2 Cancellation must be carried out via the platform through which the subscription was purchased (e.g. Apple App Store). Deleting the app from the device does not constitute cancellation of the subscription.

9.3 The right of both parties to extraordinary termination for good cause remains unaffected.

9.4 Upon expiration or cancellation of the premium subscription, access to the premium features will be revoked. The user may continue to use the app with the free version, subject to the limitations outlined in Section 5.

10. Refunds

10.1 All refund requests for in-app purchases and subscriptions are handled through the Apple App Store in accordance with Apple’s then-current refund policy. The Provider does not process refunds directly.

10.2 Users may submit refund requests via Apple at https://reportaproblem.apple.com.

10.3 Statutory consumer rights that cannot be excluded under applicable law remain unaffected. In particular, consumers resident in the European Union, the European Economic Area, or the United Kingdom may have statutory rights of withdrawal or cancellation for digital content and services under local law; any such rights apply in addition to, and are not limited by, this Section 10.

10.4 Loss of the right of withdrawal for digital content and services (EU/EEA/UK consumers). In accordance with Art. 16(m) of EU Directive 2011/83/EU on consumer rights, and equivalent implementing legislation in the UK (including the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013), the right of withdrawal for digital content that is not supplied on a tangible medium is lost if performance has begun with the user’s express prior consent and acknowledgement that the right of withdrawal is thereby lost. By activating a premium subscription or making any in-app purchase through the Apple App Store, you expressly request that performance of the contract begin immediately and acknowledge that, once performance has begun, your statutory right of withdrawal is forfeited.

11. Data protection

The protection of user data is of particular importance to the Provider. Detailed information regarding the collection, processing, and use of personal data can be found in the XueTang Privacy Policy, which is available within the app or online at the address provided.

12. Modifications and amendments

The Provider reserves the right to make unilateral changes to the app where necessary to safeguard legitimate interests, particularly to comply with legal obligations or to implement new features or improvements to the app.

13. Requests

All user inquiries or requests relating to the use of the app can be directed to: support@pocketapps.studio.

For formal legal notices: Pocket Apps Studio Pte. Ltd. (UEN 202549990M), 160 Robinson Road, #14-04 Singapore Business Federation Center, Singapore 068914.

14. Dispute resolution

14.1 Any dispute arising out of or in connection with these Terms of Use shall be resolved in accordance with Section 15 (Final provisions).

14.2 The Provider is neither willing nor obliged to participate in dispute-resolution proceedings before a consumer arbitration board, except where such participation is required by mandatory law applicable to the user.

15. Final provisions

15.1 The contract language is English. If these Terms of Use are made available in another language, the English version shall take precedence in the event of any discrepancies.

15.2 The laws of the Republic of Singapore shall apply, to the exclusion of the United Nations Convention on Contracts for the International Sale of Goods (CISG). The application of mandatory consumer-protection regulations in the country where the user has their habitual residence at the time of contract conclusion (including within the European Economic Area or the United Kingdom) remains unaffected.

15.3 These Terms of Use are stored within the app and are also available for permanent download at: https://xuetang.app/terms-and-conditions/

15.4 Subject to any mandatory consumer-jurisdiction rules that apply in the user’s country of residence, the courts of Singapore shall have exclusive jurisdiction over any dispute arising out of or in connection with these Terms of Use.

15.5 If any provision of these Terms of Use is or becomes invalid or unenforceable, the validity of the remaining provisions shall remain unaffected.