Last updated: March 29, 2026
Welcome to Grind1600. These Terms of Use (“Terms”) constitute a legally binding agreement between you (“you” or “User”) and Grind1600 (“Company,” “we,” “us,” or “our”) regarding your access to and use of the Grind1600 platform, including our website and all related services (collectively, the “Services”).
By creating an account, you are required to explicitly accept these Terms and our Privacy Policy. Your acceptance is recorded with a timestamp and the version of the terms you agreed to. If you do not agree with these Terms, you must discontinue use of the Services immediately.
Our Services are available to users who are at least 13 years of age. If you are under 18, you must have the consent of a parent or legal guardian to use the Services, in accordance with applicable Brazilian law, including the Estatuto da Criança e do Adolescente (ECA) and the Lei Geral de Proteção de Dados (LGPD). Your parent or guardian must review and agree to these Terms on your behalf before you may access or use the platform. By allowing a minor to use the Services, the parent or guardian agrees to be bound by these Terms and assumes responsibility for the minor's activity on the platform.
To access the Services, you must create an account using either an email address and password or Google OAuth sign-in. When registering, you agree to provide accurate, current, and complete information. You are responsible for maintaining the confidentiality of your login credentials and for all activity that occurs under your account.
If you register with an email address and password, you must verify your email address before gaining full access to the platform. A verification code will be sent to the email address you provide. If you sign in with Google OAuth and an account with the same email address already exists, your accounts may be linked automatically.
For your security, after 5 consecutive failed login attempts, your account will be temporarily locked for 15 minutes. You must notify us immediately of any unauthorized use of your account or any security breach. We reserve the right to suspend or terminate accounts that contain false information or violate these Terms.
Grind1600 provides an online Digital SAT preparation platform designed to help students improve their standardized test scores. The platform includes the following features:
While we strive to provide effective preparation materials, Grind1600 does not guarantee any specific test score, score improvement, or academic outcome. Our tools, practice materials, and study recommendations are intended for educational and informational purposes only and do not constitute professional tutoring, academic advising, or counseling.
You agree to use the Services only for lawful purposes and in accordance with these Terms. You shall not:
All content, features, and functionality of the Services — including but not limited to practice questions, answer explanations, study plan algorithms, adaptive learning systems, score analytics, interactive lessons, text, graphics, logos, icons, images, software, and design elements — are the exclusive property of Grind1600 or its licensors and are protected by copyright, trademark, and other intellectual property laws.
You are granted a limited, non-exclusive, non-transferable, revocable license to access and use the Services for personal, non-commercial educational purposes. You may not copy, modify, distribute, sell, or create derivative works based on any part of our Services or content without prior written authorization. All practice questions, explanations, and study materials are proprietary. Unauthorized sharing or distribution of these materials is strictly prohibited, and we actively monitor for such violations.
You may create content through the Services, including personal study notes within lessons, profile information, and feedback (“User Content”). You retain ownership of your User Content; however, by submitting it, you grant Grind1600 a non-exclusive, worldwide, royalty-free license to use, store, process, and display your User Content solely for the purposes of operating and improving the Services.
You represent that you own or have the necessary rights to submit your User Content and that it does not infringe the rights of any third party. We reserve the right to remove any User Content that we believe violates these Terms or is otherwise objectionable. Study notes are subject to a maximum length of 20,000 characters per lesson.
The platform currently offers Free, Plus, and Pro plan tiers. Access to certain features may vary by plan tier. At this time, no payment processing is integrated into the platform and all features are provided without charge.
We may introduce paid subscriptions or one-time purchases in the future. If and when paid features are introduced, we will notify users in advance and provide clear information about pricing, billing terms, and cancellation procedures before any payment is required. No charges will be applied without your explicit consent. Any future payment processing will comply with applicable provisions of the Código de Defesa do Consumidor (Consumer Protection Code).
Refund Policy: We offer a 7-day money-back guarantee on all paid subscriptions and purchases. If you are not satisfied with your purchase, you may request a full refund within 7 days of the original purchase date by contacting us at support@grind1600.com. Refund requests made within this 7-day window will be processed promptly and in full. After the 7-day refund period has expired, no refunds or credits will be issued. Your subscription will remain active until the end of the current billing period, but partial-period refunds are not available once the 7-day window has closed.
The daily challenge feature includes a public leaderboard that displays the top 50 participants ranked by correctness and response time. When you submit a daily challenge answer, the following information becomes visible to all authenticated users of the platform:
By participating in the daily challenge, you acknowledge and consent to having this information displayed on the leaderboard. If you do not wish for your information to be publicly visible, you may choose not to participate in the daily challenge.
The platform uses algorithms to personalize your learning experience. These algorithms affect the Services in the following ways:
You may recalibrate your study plan at any time if you believe the algorithm's assessment does not reflect your current skill level. You may also manually adjust your scores, target scores, test date, and study schedule through your settings. In accordance with the LGPD, you have the right to request information about how these algorithms process your data.
Grind1600 is an independent educational platform and is not affiliated with, endorsed by, or sponsored by the College Board or any official testing organization. “SAT” is a registered trademark of the College Board. Any references to the SAT or related trademarks are for identification purposes only.
Our practice materials are independently developed and may not directly replicate official test content. The College Board-style test interface is designed for familiarity and practice purposes only. The Services may contain links to third-party websites or resources. We are not responsible for the content, accuracy, or availability of any third-party sites or resources.
Your use of the Services is also governed by our Privacy Policy, which describes how we collect, use, store, and share your personal information. By using the Services, you consent to the practices described in our Privacy Policy. We are committed to protecting the privacy of all users, especially minors, and comply with the Lei Geral de Proteção de Dados (LGPD — Law No. 13,709/2018) and other applicable data protection regulations. You have the right to access, correct, anonymize, block, or delete your personal data at any time by contacting us.
The Services are provided on an “AS IS” and “AS AVAILABLE” basis without warranties of any kind, either express or implied. We do not warrant that the Services will be uninterrupted, error-free, or free from harmful components. Grind1600 makes no guarantees regarding the accuracy, reliability, or completeness of any practice materials, score predictions, algorithmic study plans, domain level calculations, or study recommendations provided through the platform.
We are not responsible for any test outcomes or academic decisions you make based on information obtained through the Services. SAT scores depend on many factors beyond the scope of our platform.
To the maximum extent permitted by applicable law, Grind1600 and its officers, directors, employees, agents, and affiliates shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from or related to your use of the Services, including but not limited to loss of data, loss of anticipated score improvements, or damages arising from reliance on any content, algorithmic recommendations, or information provided through the platform.
We reserve the right to update or modify these Terms at any time. We will notify you of material changes by posting the updated Terms on our platform and updating the “Last Updated” date above. Continued use of the Services following such changes constitutes your acceptance of the revised Terms. We also reserve the right to modify, suspend, or discontinue any aspect of the Services at any time without prior notice.
We may suspend or terminate your account and access to the Services at our sole discretion, without notice, for conduct that we determine violates these Terms, is harmful to other users, or is otherwise objectionable. Upon termination, your right to access the Services will cease immediately, and we may delete your account data in accordance with our data retention policies.
These Terms shall be governed by and construed in accordance with the laws of the Federative Republic of Brazil, including the Código Civil, the Marco Civil da Internet (Law No. 12,965/2014), the Lei Geral de Proteção de Dados (LGPD), and the Código de Defesa do Consumidor. Any disputes arising from or relating to these Terms or the Services shall be submitted to the competent courts of Brazil. In accordance with Brazilian consumer protection law, you retain all rights granted under the Código de Defesa do Consumidor, and nothing in these Terms shall be construed to limit those rights.
If you have any questions about these Terms, please reach out to us at support@grind1600.com. We are committed to addressing your concerns promptly and transparently.