Privacy Policy

Last updated: September 21, 2026

StepMind is an AI-guided problem-solving tool operated by VivaThinking. We collect only the information needed to recognize problems, provide tutoring, save learning progress, secure the service, and improve reliability. We do not sell personal information or use it for personalized advertising.

1. Information we process

• Account data: an anonymous user ID and device-generated GUID. If you choose Apple or Google sign-in, we also receive the account identifier, display name, and email made available by that provider.
• Learning content: problem photos, recognized problem text and diagrams, your tutoring messages and answers, AI replies, progress, history, and mistake-book entries.
• Device and service data: app version, device/OS type, language, channel, IP address, request and error logs, and security diagnostics.
• Feedback: messages and attachments you voluntarily send through feedback or support.

We do not ask for or store your birth date, age bracket, school-grade profile, textbook, or a guardian email. StepMind may infer an approximate grade/difficulty from each submitted problem solely to adjust the tutoring language.

2. How we use information

• Recognize uploaded questions and create step-by-step guidance.
• Maintain learning history, progress, and mistake review.
• Sync history when you link an Apple or Google account.
• Prevent abuse, troubleshoot failures, and maintain service security.
• Measure aggregate product reliability after you consent to analytics.
• Respond to support, privacy, and deletion requests.

3. AI processing and service providers

To provide recognition and tutoring, relevant problem content and conversation context may be sent to AI service providers used by StepMind, currently including Google Gemini and DeepSeek. Cloudflare R2 stores uploaded problem images using non-public object keys and short-lived signed access URLs. Apple or Google handles optional sign-in. Umeng provides product analytics only after you accept the privacy notice.

These providers process data on our behalf or under their own applicable terms. Data may be processed in countries other than yours. We limit the data sent to what is needed for the requested feature.

4. Analytics, advertising, and profiling

Analytics does not initialize before you accept the in-app privacy notice. StepMind does not contain personalized advertising, does not sell personal information, and does not create advertising profiles of children or other users.

5. Retention and deletion

Problem photos, recognized content, tutoring conversations, progress, history, and mistake records are retained while your account is active so those features remain available. You may permanently delete them at any time from Me → account card → Delete account. A successful in-app deletion removes the account record, linked sign-in data, uploaded problem images, recognized results, conversations, answer checks, history, and mistake records from active systems.

You may also request deletion by emailing support@vivathinking.com with your StepMind User ID. Limited security logs or protected backups may remain until their normal rotation expires or where retention is legally required; they are not used to recreate a deleted account.

6. Children and teenagers

StepMind is intended for users aged 13 or older. You must also be old enough under the law where you live to consent to an online service independently. If you are a minor or below that local consent age, use StepMind only with permission from a parent or legal guardian.

We do not knowingly collect personal information from children under 13. If a parent or guardian believes a child provided information to us, they may contact us to request access or deletion. We will verify the request as reasonably necessary and promptly remove the data.

7. Your choices and rights

Depending on your location, you may request access, correction, deletion, restriction, portability, or withdrawal of consent. You can decline the initial privacy notice and not use the service, clear local cache in the app, or delete your account. Contact us for any request we cannot provide in-app.

8. Security

We use access controls, signed upload/download links, transport encryption, and operational safeguards. No online service can guarantee absolute security; please avoid including names, faces, contact details, or other unnecessary personal information in problem photos.

9. Changes and contact

We may update this policy as the service changes. Material changes will be presented in the app or reflected by a new effective date. Questions and privacy requests: support@vivathinking.com. See also StepMind Support.