Privacy Policy
Last updated: September 21, 2026
1. Information We Collect
ClashClass is owned and operated by SolveTab Inc. ("SolveTab", "we", "us", or "our"). We collect information you provide directly when you create an account, update your profile, submit practice essays or prompts, participate in online matches, join a classroom, or communicate with us. This includes your name, username, email address, profile picture, country flag preference, locale, and text submissions. When you sign in with Google or Apple, we receive basic profile information from those providers; if you use Apple's Hide My Email feature, we receive a private relay address instead of your real email. We also automatically collect technical data such as IP address, browser type, device information, language preferences, and usage analytics.
2. Device & Security Data
To protect your account, we record a unique identifier for each device or browser that signs in, along with approximate location information (city, region, country) derived from your IP address at the time of sign-in. This data powers the new-sign-in alert email and the Devices list in your account settings. We retain up to 20 device records per account. We do not use device identifiers for advertising purposes.
3. How We Use Your Information
We use your information to operate, maintain, and improve ClashClass; evaluate your writing submissions using AI models; calculate Elo skill ratings; update global leaderboards and weekly league standings; perform content moderation; manage subscriptions and payments; deliver customer support; send security alerts and email verification messages; send weekly recap emails and match notifications (where you have opted in); display streak widgets and Live Activities on your iOS device; facilitate classroom assignments and educator access; and train, fine-tune, and improve our proprietary machine learning and AI models using de-identified or aggregated submission data.
4. AI Evaluation & Model Training
Your writing submissions are processed by AI models to generate scores and qualitative feedback. We use multiple AI providers, which may include Google Gemini, Groq, and others, to evaluate responses and conduct shadow experiments that compare model outputs. Logged AI call data, including model used, latency, and normalized scores, is retained for up to 30 days for performance analysis. Submissions may also be used, in de-identified or aggregated form, to fine-tune and improve our proprietary AI grading models. We do not share personally identifiable writing content with third-party providers for their own training.
5. Third-Party Data Sharing
To provide our services, your data may be processed by trusted third-party service providers, including: authentication providers (Google, Apple) for sign-in; payment processors (Stripe, RevenueCat) for subscription management; email delivery services (Resend) for transactional and recap emails; cloud infrastructure providers (Supabase, Cloudflare) for database hosting, edge computing, and push notifications; analytics and diagnostic services (PostHog) for crash reporting, feature configuration, and product telemetry; advertising networks (Google Mobile Ads) for serving advertisements in the free tier of the mobile app; and AI inference providers for writing evaluation. We do not sell your personal data. Each provider is bound by data processing agreements appropriate to their role.
6. Push Notifications & Live Activities
With your permission, we store push notification tokens on our servers to deliver match-turn reminders, streak countdown Live Activities, and other in-app notifications to your device. Live Activity tokens for iOS are stored separately and used only to start the streak countdown Live Activity on your Lock Screen and in the Dynamic Island. You can revoke notification permissions at any time through your device's system settings. On account deletion, all stored push tokens and Live Activity tokens are removed.
7. Advertising & Analytics
We may partner with third-party advertising networks, including Google Mobile Ads, to serve advertisements in the free tier of the mobile app. Third-party vendors may use device identifiers and similar technologies to serve relevant ads and measure campaign effectiveness. You can manage your ad preferences through your device's system settings or by opting out via applicable third-party mechanisms. We also use analytics and diagnostics platforms, including PostHog, to monitor app health, collect crash diagnostics, manage feature flags, and understand how users interact with ClashClass to improve the product.
8. Cookies & Tracking Technologies
We use essential functional cookies to save your language, theme, and session preferences across visits. Third-party partners may also set performance and advertising cookies to analyze traffic and measure ad effectiveness. On mobile, we use local storage equivalents (AsyncStorage) to persist your session and preferences.
9. Classrooms & Social Features
If you participate in a classroom, your submissions and grades may be visible to the classroom's educator or administrator. Public social activity, including leaderboard entries, match results, submission likes, comments, and profile follows, is visible to other ClashClass users. You can control the visibility of your profile and activity through your account settings.
10. Security, Fraud Prevention & Data Retention
We employ industry-standard encryption and security measures to protect your information. To prevent fraud, maintain system integrity, and enforce actions against malicious or abusive users, technical access logs and security records may be retained as necessary even after account closure or deletion requests, as permitted by law. You may request deletion or export of your account and personal data at any time through account settings or by contacting hello@clashclass.com.
11. Children's Privacy & Cross-Border Transfers
ClashClass is intended for users who are at least 13 years of age (or the minimum legal age required in your jurisdiction). We do not knowingly collect personal information from children under 13 without appropriate consent. Your information may be transferred to, stored, and processed in cloud servers located outside your home country by our infrastructure providers.
12. Privacy Policy Updates & Contact
SolveTab Inc. may update this Privacy Policy periodically to reflect service modifications or legal requirements. Material updates will be posted on this page with an updated revised date. If you have any questions, privacy concerns, or data requests regarding this policy, please contact our privacy and support team at hello@clashclass.com or visit our Support page at clashclass.com/support.