Privacy Policy

✎ Teacher's note:

“Your words. Your personality. Just fix the English.” We respect your writing. TeacherCheck is designed to check grammar mistakes in your sentences without storing your writing permanently or selling your personal data.

1. Overview & Purpose

TeacherCheck is an educational English grammar checking application. This Privacy Policy describes how we handle text and technical data when you visit our website or submit sentences for grammar review.

2. Text You Submit for Grammar Checking

When you use TeacherCheck, you can enter English sentences or paragraphs (up to 500 characters in the notebook editor, 600 characters maximum via API) to receive grammar corrections, word replacements, and constructive feedback.

In-Flight Processing by AI Provider: To analyze your sentence and identify genuine grammatical mistakes, your submitted text is securely transmitted over encrypted HTTPS to our AI service provider (Google Gemini API). The AI provider processes the text in real time to generate suggested corrections and teacher notes.
No Permanent Server Storage: TeacherCheck does not permanently store your submitted sentences, essays, or personal text in any server database, log archive, or long-term file storage. Once the grammar analysis is complete, the results are returned directly to your browser.
Browser Local Drafts: For your typing convenience, your active sentence may be saved locally within your own browser using standard Web Storage (localStorage under teachercheck_user_draft). This text remains strictly on your device, is never synchronized to our servers, and can be cleared at any time by clicking “Try another sentence” or clearing browser site data.

3. Diagnostic Logging & Security Telemetry

To maintain service stability, prevent automated abuse, and debug connectivity issues, our production servers record minimal operational telemetry:

Safe Request Telemetry: We record timestamp, HTTP response status, total request duration in milliseconds, character length of submitted text, and count of corrections returned.
Zero Text Logging: Our server diagnostic logging explicitly redacts and excludes user-submitted text and API keys. We do not record or view the contents of your writing in operational logs.
Abuse Prevention: IP-based rate limiting is applied in memory to protect the service against denial-of-service attempts. IP counters reset automatically.

4. Accounts, Tracking & Cookies

TeacherCheck is built to be simple and privacy-conscious:

No User Accounts: You do not need to register, log in, or provide an email address, password, or profile information to check your English.
No Payment Information: TeacherCheck does not collect credit card numbers, billing addresses, or banking details.
No Advertising or Cross-Site Tracking: We do not run advertising networks, third-party analytics trackers, or commercial profiling cookies.

5. Important Educational Disclaimer

Advisory Notice: TeacherCheck is an English grammar assistance and learning tool. It is not a professional writing, legal, medical, financial, or certified translation advisory service. Because text is transmitted over the internet to automated AI models, please do not submit sensitive personal identifiers, confidential medical records, passwords, or classified business information.

6. Third-Party Infrastructure

Our application is hosted on cloud infrastructure (Render) and integrates with Google's generative language API for grammar analysis. These providers process network traffic and API requests in accordance with their respective security and service commitments.

7. Changes to This Privacy Policy

We may update this Privacy Policy periodically to reflect service updates or technical changes. Any revisions will be published on this page with an updated “Last Updated” date.

8. Contact Us

If you have questions, comments, or concerns regarding this Privacy Policy or how TeacherCheck operates, please reach out to:

Email: hello@teachercheck.app

Terms of Service

✎ Teacher's note:

TeacherCheck is built to help you learn and write with confidence. You keep ownership of everything you write, and we provide automated red-pen feedback to help catch genuine grammar mistakes.

1. Acceptance of Terms

By visiting, accessing, or using TeacherCheck (the “Service”), you agree to be bound by these Terms of Service (“Terms”). If you do not agree to these Terms, please do not use the Service.

2. Description of the Service

TeacherCheck is an interactive English grammar checking application styled after a school teacher's notebook corrections. Users can enter English sentences or paragraphs to identify objective grammar errors (such as subject-verb agreement, irregular verb forms, and tense mismatches) with visual red-pen strike-throughs and word-above corrections, while preserving authentic informal expressions and personal tone.

3. Permitted Use & User Conduct

You may use TeacherCheck for lawful educational, personal, or professional drafting purposes. When using the Service, you agree not to:

Attempt to bypass, disable, or tamper with our rate limiting, security headers, or request payload limits.
Use automated scrapers, scripts, or botnets to flood the check endpoint or degrade service performance for others.
Submit text containing malware, malicious exploits, or unlawful content.
Reverse engineer or abuse the underlying infrastructure.

4. AI-Powered Corrections & Educational Guidance

Grammar corrections, explanations, and teacher notes are generated using automated artificial intelligence (AI) models and rule-based heuristics. While TeacherCheck is engineered to provide accurate, high-quality grammar guidance:

Language models may occasionally misinterpret context, slang, regional dialects, or complex syntax.
Suggestions should be treated as educational guidance and recommendations, not infallible determinations of correctness.

5. Specialized Advisory Disclaimer (Not Professional Advice)

IMPORTANT DISCLAIMER: TeacherCheck is an English grammar checking and learning tool. It is NOT a professional writing, copyediting, legal, medical, financial, or specialized advisory service.

The corrections and feedback provided by TeacherCheck do not constitute professional advice or official endorsement. You are solely responsible for reviewing, verifying, and deciding whether to use or publish any text checked by the Service. Never rely exclusively on TeacherCheck for legally binding agreements, regulatory documents, medical records, or safety-critical communications.

6. Intellectual Property & Your Words

Your words stay yours. You retain complete ownership and intellectual property rights in the text you submit to TeacherCheck. We claim no copyright, title, or ownership over your original writing or the corrected output.

TeacherCheck's branding, notebook interface, visual styles, handwritten annotations, and application code are protected by copyright and intellectual property laws.

7. Disclaimer of Warranties & Limitation of Liability

The Service is provided on an “AS IS” and “AS AVAILABLE” basis without warranties of any kind, either express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, and non-infringement.

To the maximum extent permitted by applicable law, TeacherCheck, its creators, and operators shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or related to your access to or use of (or inability to use) the Service.

8. Modifications to the Service and Terms

We reserve the right to update, modify, or discontinue features of TeacherCheck at any time. Any changes to these Terms will be posted on this page with an updated effective date. Continued use of the Service following modifications constitutes your acceptance of the updated Terms.

9. Contact Information

For any questions or inquiries regarding these Terms of Service, please reach us at:

Email: hello@teachercheck.app

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Just fix the English.

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