Terms of Service

1. Acceptance of Terms

By downloading, installing, accessing, or using LearnClash ("the App"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree, do not use the App.

1.1 Eligibility

• Age Requirement: You must be at least 13 years old to use LearnClash.
• Capacity: You must have the legal capacity to form a binding contract.
• Parental Consent: If you are between 13 and 17 years old, you represent that your parent or legal guardian has reviewed and agrees to these Terms on your behalf.

1.2 Agreement

• These Terms constitute a legally binding agreement between you and LearnClash.
• We may update these Terms at any time. Material changes will be communicated via in-app notification at least 30 days before taking effect.
• Continued use of the App after changes take effect constitutes acceptance of the revised Terms.
• If you do not accept updated Terms, you must stop using the App and delete your account.

2. Account Registration

2.1 Sign-In Methods

• Google Sign-In: Available on iOS and Android.
• Apple Sign-In: Available on iOS only.
• No email/password registration is available. Authentication is handled through OAuth providers.
• We receive your email address, display name, and profile photo URL from your OAuth provider.

2.2 Account Rules

• One Account Per Person: You may only maintain one LearnClash account. Creating multiple accounts ("multi-accounting") to manipulate ratings or circumvent restrictions is prohibited.
• Accurate Information: You must provide accurate information as supplied by your OAuth provider.
• Account Security: You are responsible for maintaining the security of your account and any devices used to access it.
• Unauthorized Access: You must notify us immediately at support@learnclash.com if you suspect unauthorized access to your account.
• No Account Sharing: You may not share your account credentials or allow others to access your account.

2.3 Profile Data

• Display Name: Maximum 50 characters. Must not contain offensive, discriminatory, or misleading content.
• Profile Photo: Must be a valid HTTPS URL (maximum 2,048 characters). Must not contain offensive, explicit, or illegal content. Photos are processed through automated content moderation.
• Editable Fields: Display name, profile photo, language preference, and preferred quiz categories.
• System-Managed Fields: User ID (UID), email address, ELO rating, XP, level, streak data, and premium status are managed by LearnClash and cannot be directly edited.

3. Service Description

LearnClash is an AI-powered educational quiz game where players compete in real-time duels across various knowledge categories.

3.1 Core Features

• Quiz Duels: Real-time competitive matches against other players.
• 18 Categories: Science, Nature, History, Geography, Entertainment, Music, Sports, Literature, Technology, Food & Drink, Art, Gaming, Religion, Business & Economics, Pop Culture, Comics & Anime, Health & Body, and Mythology.
• Duel Structure: Each duel consists of 6 rounds with 3 questions per player per round (18 questions total per player).
• Time Limit: 30 seconds to answer each question.
• Practice Mode: Single-topic duels for focused learning without ELO impact.

3.2 ELO Rating System

LearnClash uses an ELO-based rating system to measure skill and provide fair matchmaking:

• Starting Rating: All new players begin at 1000 ELO (Silver tier).
• 10-Tier League System: Iron (0+), Bronze (800+), Silver (950+), Gold (1100+), Platinum (1250+), Emerald (1400+), Diamond (1550+), Master (1750+), Grandmaster (1950+), Challenger (2150+).
• Rating Volatility: K-factor of 40 for your first 10 duels, then 20 for established players.
• Matchmaking: You will be matched with players within approximately ±200 ELO of your rating.
• Rating Floor: Your rating cannot drop below 100 ELO.
• Inactivity Decay: If you are inactive for 28+ days and your rating is 1100 or above, your rating will decay 20% toward 1000.
• No Guarantees: We do not guarantee rank preservation during service changes, algorithm updates, or integrity enforcement actions.

3.3 XP & Level System

• Experience Points (XP): Cumulative points earned through gameplay. XP only increases and is never reduced.
• 100-Level Progression: Advance from Novice (Level 1) to Oracle (Level 100+) based on accumulated XP.
• XP Sources: Correct answers (base + difficulty multiplier), combo bonuses for consecutive correct answers, and mastery bonuses for newly mastered questions.
• Non-Transferable: XP and levels cannot be transferred between accounts and have no monetary value.

3.4 Streak System

• Daily Streak: Track consecutive days of activity. Maintain your streak by answering at least one question per day.
• Streak Freezes: Protect your streak when you miss a day. Free users receive 1 freeze per year; Premium users receive 2 freezes per year.
• Milestones: Celebrations at 7, 30, 100, 365, and 1000-day streaks.
• Maximum Streak: Your all-time highest streak is permanently recorded.
• Non-Transferable: Streaks cannot be transferred between accounts.

3.5 Social Features

• Friends: Send and receive friend requests. Challenge friends to direct duels.
• Friend Streaks: Track consecutive days of playing with specific friends.
• Head-to-Head Stats: View your win/loss record against specific opponents.
• Nudges: Send reminders to friends with pending duels (rate-limited).
• Public Profiles: Your display name, profile photo, ELO rating, XP, and level are visible to other authenticated users for matchmaking and leaderboard purposes.
• User Search: Other users can find you by searching for your display name.

4. Subscriptions & Payments

4.1 Free Tier

All users have access to the following features at no cost:

• Maximum 5 concurrent active or pending duels
• Limited Clash AI chat messages
• Topic creation: 2 per hour
• Avatar uploads: 1 per day
• Question reports: 5 per hour
• Chat history: 90 days
• 1 streak freeze per year

4.2 Premium Tier

Premium subscribers receive enhanced access:

• Unlimited concurrent duels
• Unlimited Clash AI chat messages
• Topic creation: 10 per hour
• Avatar uploads: 10 per day
• Question reports: 25 per hour
• Unlimited chat history retention
• 2 streak freezes per year
• Premium badge displayed on your profile

4.3 Subscription Terms

• Free Trial: New subscribers receive a 7-day free trial. One trial per Apple ID or Google account.
• Auto-Renewal: Subscriptions automatically renew at the end of each billing period unless cancelled.
• Payment: Charged to your Apple App Store or Google Play account at confirmation of purchase.
• Management: Subscriptions are managed through your App Store or Google Play settings, not through LearnClash directly.
• Cancellation: To cancel, turn off auto-renewal at least 24 hours before the end of your current billing period. Access continues until the period ends.
• Refunds: Refunds are handled by Apple or Google according to their respective policies. LearnClash does not process refunds directly.
• Price Changes: We will notify you of price changes at least 30 days in advance. Continued subscription after a price change constitutes acceptance.

4.4 Virtual Currency Disclosure

In compliance with EU Consumer Protection Cooperation Network guidelines (March 2025):

• LearnClash Premium is a subscription service, not virtual currency.
• There is no in-app currency that can be purchased with real money.
• Subscription entitlements are non-transferable and cannot be exchanged.
• Premium benefits have no cash value and cannot be redeemed for money.
• XP, streaks, and other in-game metrics have no monetary value.

5. User-Generated Content

5.1 Topic Creation

• Users may create custom quiz topics for the community.
• Topic creation is subject to rate limits based on your subscription tier.
• We use AI-powered vector matching to detect and prevent duplicate topics.
• All topics are reviewed for appropriateness. LearnClash reserves the right to reject, modify, or remove any topic at our sole discretion.
• Topics containing offensive, illegal, or inappropriate content will be removed and may result in account suspension.

5.2 Avatar Uploads

• Profile photos are processed through Google Cloud Vision API for automated content moderation (NSFW detection).
• Images containing explicit, offensive, violent, or illegal content are automatically rejected.
• Images are compressed and may be cropped to standard dimensions.
• By uploading an avatar, you grant LearnClash the right to display it within the App.

5.3 Content License

• Ownership: You retain ownership of content you submit (topics, avatars).
• License Grant: By submitting content, you grant LearnClash a worldwide, royalty-free, perpetual, irrevocable, non-exclusive license to use, display, reproduce, modify, adapt, publish, and distribute your content for the purpose of operating and improving the service.
• Survival: This license survives account termination for operational and archival purposes.

5.4 User Representations

By submitting content, you represent and warrant that:

• You own the content or have the necessary rights to submit it.
• Your content does not infringe any third-party intellectual property rights.
• Your content is not defamatory, obscene, hateful, discriminatory, or otherwise illegal.
• Your content does not violate any applicable laws or regulations.

LearnClash is not responsible for user-submitted content and does not endorse any user content.

6. AI-Generated Content

6.1 Question Generation

• Quiz questions are generated by xAI Grok, a third-party artificial intelligence system.
• Questions are automatically translated to supported languages using Google Gemini.
• Ownership: LearnClash owns all AI-generated questions and content.
• Accuracy Disclaimer: AI-generated questions may contain factual errors, outdated information, or inaccuracies. We make no guarantee of factual correctness.
• Questions are provided for entertainment and educational purposes and should not be relied upon as authoritative sources.

6.2 Clash AI Tutor

Premium users have access to Clash AI, an AI-powered learning assistant:

• Clash AI responses are generated by xAI Grok.
• Chat history is stored for 90 days (Free tier) or indefinitely (Premium tier).
• Clash AI may produce incorrect, incomplete, or misleading information.
• Clash AI is not a substitute for professional education, tutoring, or expert advice.
• LearnClash is not liable for any decisions or actions taken based on Clash AI responses.

6.3 Content Reporting

• Users may report questions they believe contain errors.
• Reports are validated using AI fact-checking (Grok with Grokipedia).
• Validated reports may result in automatic corrections to questions.
• Report submissions are subject to rate limits based on your subscription tier.
• Submitting false, frivolous, or malicious reports may result in reporting restrictions or account suspension.

7. Acceptable Use

7.1 Fair Play

LearnClash is built on fair competition. You agree to:

• Compete honestly using your own knowledge and abilities.
• Accept wins and losses gracefully.
• Treat other players with respect.

7.2 Prohibited Conduct

The following activities are strictly prohibited:

Cheating & Exploits

• Using automated tools, bots, scripts, or third-party software to play or gain advantage.
• Exploiting bugs, glitches, or vulnerabilities for competitive advantage.
• Answer harvesting, data mining, or scraping question databases.
• Circumventing rate limits, cooldowns, or other restrictions.
• Time manipulation, clock exploits, or packet manipulation.
• Creating multiple accounts to manipulate ratings or evade bans.

Integrity Violations

• ELO manipulation including sandbagging (intentionally losing) or win trading.
• Intentional disconnection to avoid losses or force draws.
• Collusion with opponents to predetermine match outcomes.
• Match fixing or rigging of any kind.

Community Violations

• Harassment, threats, bullying, or intimidation of other users.
• Using offensive, hateful, or discriminatory display names or avatars.
• Impersonating other users, LearnClash staff, or public figures.
• Spam, unsolicited communications, or excessive nudging.
• Hate speech, discrimination, or content that promotes violence.

Security Violations

• Reverse engineering, decompiling, or disassembling the App.
• Circumventing or attempting to circumvent Firebase App Check or other security measures.
• Attempting unauthorized access to LearnClash systems, databases, or other user accounts.
• Interfering with or disrupting the service, servers, or networks.
• Distributing malware, exploits, or tools designed to compromise the App.

7.3 Enforcement

• LearnClash monitors for violations using automated systems and user reports.
• All answers are validated server-side to prevent cheating.
• Violations may result in: warnings, ELO penalties, temporary suspensions, or permanent account termination.
• Severe violations (e.g., cheating, harassment) may result in immediate termination without warning.
• Appeals may be submitted to support@learnclash.com.

8. Intellectual Property

8.1 LearnClash Ownership

LearnClash and its licensors own all rights, title, and interest in:

• The App, including all software, code, design, and architecture.
• All AI-generated questions, answers, and explanations.
• The LearnClash name, logo, and all associated branding.
• User interface design, visual elements, and user experience.
• League tier names, badges, and visual assets.
• All documentation, marketing materials, and website content.

8.2 User License

• Subject to these Terms, LearnClash grants you a limited, non-exclusive, non-transferable, revocable license to use the App for personal, non-commercial purposes.
• This license does not transfer any ownership rights to you.
• This license is automatically revoked upon violation of these Terms or termination of your account.

8.3 Trademarks

• "LearnClash" and associated logos are trademarks of LearnClash.
• You may not use our trademarks without prior written permission.
• Use of the App does not grant any implied license to use our trademarks.
• Nothing in these Terms should be construed as endorsement or affiliation.

8.4 Third-Party Services

• The App utilizes third-party services including Firebase (Google LLC), RevenueCat, xAI, and Google Gemini.
• Your use of these services is subject to their respective terms of service and privacy policies.
• LearnClash is not responsible for changes, outages, or issues with third-party services.

9. Disclaimers

9.1 Service Availability

• LearnClash is provided "as is" and "as available" without warranties of any kind, whether express or implied.
• We do not guarantee 100% uptime or uninterrupted access.
• Scheduled maintenance, updates, and unexpected outages may occur without prior notice.
• Features may be modified, suspended, or discontinued at any time.

9.2 Content Accuracy

• AI-generated questions may contain factual errors, outdated information, or inaccuracies.
• We make no guarantee of factual correctness for any content.
• Educational content is provided for entertainment purposes and should not be relied upon as authoritative.
• LearnClash is not a substitute for formal education, professional advice, or expert consultation.
• Users should independently verify any information obtained through the App.

9.3 Matchmaking

• Matchmaking is provided on a best-effort basis within approximately ±200 ELO.
• We do not guarantee perfect opponent matching or immediate matches.
• Wait times vary based on player pool size, time of day, and regional availability.
• Matchmaking algorithms may be updated at any time.

9.4 Rankings & Ratings

• ELO ratings and XP are calculated by algorithms that may be updated.
• Rankings may be adjusted retroactively for integrity enforcement.
• Historical rankings may change due to detection of violations by you or opponents.
• Leaderboards reflect point-in-time snapshots and are not guaranteed to be error-free.

9.5 Third-Party Services

• We do not guarantee the availability of Firebase, Apple, Google, RevenueCat, or other third-party services.
• Third-party outages may affect LearnClash functionality.
• LearnClash is not responsible for issues arising from third-party service failures.

10. Limitation of Liability

10.1 Liability Cap

To the maximum extent permitted by applicable law, LearnClash's total liability to you for all claims arising from or related to these Terms or your use of the App is limited to the greater of:

• The amount you paid to LearnClash in the 12 months preceding the claim, or
• €100 (one hundred euros).

This cap applies to all claims combined, regardless of legal theory.

10.2 Exclusion of Damages

To the maximum extent permitted by applicable law, LearnClash shall not be liable for:

• Indirect, incidental, special, consequential, or punitive damages.
• Lost profits, revenue, data, goodwill, or business opportunities.
• Service interruptions, downtime, or data loss.
• User-generated content or actions of other users.
• Third-party service failures or changes.
• Inaccuracies in AI-generated content.
• Loss of ELO rating, streaks, XP, or other in-game progress.

10.3 Exceptions

• These limitations do not apply where prohibited by applicable law.
• Consumer rights under EU law, including those under Directive 2011/83/EU, are preserved.
• Nothing in these Terms limits liability for gross negligence, willful misconduct, or fraud.
• Nothing in these Terms limits liability for death or personal injury caused by our negligence.

11. Indemnification

You agree to indemnify, defend, and hold harmless LearnClash and its affiliates, officers, employees, and agents from and against any claims, liabilities, damages, losses, and expenses (including reasonable attorneys' fees) arising from or related to:

• Your violation of these Terms.
• Your user-generated content (topics, avatars, reports).
• Your use of the App.
• Your interactions with other users.
• Your violation of any applicable laws or regulations.
• Your violation of any third-party rights.

LearnClash reserves the right to assume exclusive defense and control of any matter subject to indemnification, at your expense. You agree to cooperate with our defense of such claims.

12. Termination

12.1 Termination by You

• You may delete your account at any time through the App (Profile → Settings → Delete Account).
• Account deletion is permanent and irreversible.
• Your data will be deleted according to our Privacy Policy retention schedule.
• Active subscriptions will continue until the end of the current billing period. No refunds are provided for the remaining period.
• To stop future charges, cancel your subscription through App Store or Google Play settings before deleting your account.

12.2 Termination by LearnClash

LearnClash may terminate or suspend your account:

• For Cause: Immediately and without notice for violations of these Terms, including cheating, harassment, or security violations.
• For Inactivity: After extended inactivity, with prior notice.
• Service Discontinuation: If we discontinue the service, with reasonable notice.
• Legal Requirement: If required by law or legal process.

12.3 Effect of Termination

Upon termination:

• Your license to use the App is immediately revoked.
• Your ELO rating, XP, streaks, achievements, and all progress are forfeited.
• Your user content will be removed according to our retention schedule.
• Active subscriptions are not refunded (manage through App Store/Google Play for future billing).
• Sections 5.3 (Content License), 8-11 (IP, Disclaimers, Liability, Indemnification), 13 (Disputes), and 14 (General) survive termination.

13. Dispute Resolution

13.1 Informal Resolution

Before initiating formal proceedings, you agree to contact us at support@learnclash.com and attempt to resolve the dispute informally for at least 30 days.

Most disputes can be resolved through direct communication. We will respond to your inquiry within 30 days.

13.2 Governing Law

• These Terms are governed by the laws of Germany, without regard to conflict of law principles.
• The exclusive jurisdiction for disputes is the courts of Berlin, Germany.
• EU consumers may bring claims in their local courts where required by consumer protection law.

13.3 Arbitration (Non-EU Users)

For users outside the European Union:

• Disputes involving claims under €10,000 shall be resolved through binding arbitration.
• Arbitration shall be administered under the ICC (International Chamber of Commerce) Rules.
• Class Action Waiver: All disputes must be brought individually. Class actions, class arbitrations, and representative actions are waived.
• Small Claims Exception: Either party may bring individual claims in small claims court if eligible.

13.4 EU Consumer Rights

If you are a consumer in the European Union:

• You may bring claims in the courts of your country of residence.
• You may use the EU Online Dispute Resolution platform.
• Right of Withdrawal: For digital content, the 14-day withdrawal right is waived when you begin using the App, as permitted under Directive 2011/83/EU Article 16(m).
• Your statutory consumer rights under applicable EU and national law are not affected by these Terms.

14. General Provisions

14.1 Entire Agreement

These Terms, together with our Privacy Policy, constitute the entire agreement between you and LearnClash regarding your use of the App. These Terms supersede any prior agreements or understandings.

14.2 Severability

If any provision of these Terms is found to be invalid, illegal, or unenforceable, the remaining provisions shall remain in full force and effect. The invalid provision shall be modified to the minimum extent necessary to make it valid and enforceable while preserving its intent.

14.3 Waiver

Our failure to enforce any provision of these Terms shall not constitute a waiver of that provision or any other provision. Any waiver must be in writing and signed by LearnClash to be effective.

14.4 Assignment

• You may not assign, transfer, or delegate your rights or obligations under these Terms without our prior written consent.
• LearnClash may assign these Terms to a successor in interest, including through merger, acquisition, or sale of assets, without your consent.

14.5 Force Majeure

LearnClash shall not be liable for any failure or delay in performance due to circumstances beyond our reasonable control, including but not limited to: natural disasters, acts of war or terrorism, government actions, pandemics, labor disputes, power outages, telecommunications failures, or third-party service disruptions.

14.6 Modifications

• LearnClash may modify these Terms at any time.
• Material changes will be communicated via in-app notification at least 30 days before taking effect.
• Continued use of the App after changes take effect constitutes acceptance.
• If you do not accept the modified Terms, you must discontinue use and delete your account.

14.7 Contact Information

For questions about these Terms:

• General Support: support@learnclash.com
• Legal Inquiries: legal@learnclash.com

14.8 Apple App Store Terms

If you downloaded the App from the Apple App Store:

• These Terms are between you and LearnClash, not Apple.
• Apple is not responsible for the App or its content.
• Apple has no obligation to provide maintenance or support.
• Apple's Standard EULA applies as supplementary terms.
• In case of conflict, these Terms prevail over Apple's Standard EULA.
• Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

14.9 Google Play Terms

If you downloaded the App from Google Play:

• These Terms are between you and LearnClash, not Google.
• Google's Play Terms of Service apply as supplementary terms.
• Subscription billing is governed by Google Play's policies.

Version History

Date	Version	Change
2026-01-08	2.0	Comprehensive rewrite with detailed ELO/XP/streak mechanics, AI content disclaimers, EU CPC 2025 virtual currency disclosure, expanded acceptable use policy, Apple/Google store alignment, and 2026 compliance preparation.
2026-01-08	1.0	Initial terms of service.