Terms of Service

Last updated: 2026-03-18

1. Service Description

EZPsych Preliminary Experiment ("the Service") is a web-based platform for conducting questionnaire pilot studies using Large Language Models (LLMs). Users upload Excel workbooks, the Service generates simulated survey responses, and delivers structured results for research purposes.

2. Account & Eligibility

By creating an account you confirm that you are at least 18 years of age or have the legal capacity to enter into this agreement. You are responsible for maintaining the confidentiality of your login credentials. Each account is for a single user; sharing accounts is prohibited.

3. Credits & Pricing

  • The Service operates on a prepaid credit system. You must purchase credits before running experiments.
  • Credit prices are displayed at the time of purchase and may be adjusted without prior notice. Purchased credits are valid indefinitely unless your account is terminated.
  • Before each experiment run, the system estimates the required credits based on the workbook configuration (model, number of personas, questions, and enabled features). The displayed estimate includes a service markup and a safety margin to cover operational costs and estimation variance.
  • Credits are deducted before the experiment begins. If the experiment fails due to a system error, the deducted credits will be automatically refunded to your account.

4. Refund Policy

  • Automatic refund: If an experiment fails due to a platform or infrastructure error, the estimated credits are refunded automatically. No action is needed from you.
  • No refund for successful runs: Once an experiment completes successfully and results are available for download, the credits consumed are non-refundable.
  • No refund for user errors: If an experiment fails because of an invalid or misconfigured workbook, credits are not refunded. Use the "Estimate Cost" button to verify your workbook before starting a run.
  • Unused credits: Unused credits in your account are non-refundable and non-transferable, except where required by applicable law.
  • Disputes: If you believe a refund has been incorrectly denied, contact support within 30 days of the charge. We will review the experiment logs and respond within 5 business days.

5. Payment Processing

All payments are processed by Paddle.com Market Limited as our Merchant of Record. Paddle handles all billing, tax collection, and compliance. By purchasing credits you also agree to Paddle's Terms of Service and Privacy Policy.

6. Data & Privacy

  • Uploaded workbooks and experiment results are stored on our servers and are accessible only to the account owner.
  • We do not share, sell, or use your uploaded data for any purpose other than running the requested experiments.
  • Experiment data (uploaded workbooks and result files) is retained for a maximum of 90 days (3 months) after the experiment completes. After this period, the data will be automatically deleted from our servers. Please download your results promptly.
  • LLM API calls are made to third-party providers (e.g., OpenRouter, OpenAI). Prompt content is sent to these providers to generate responses. Please do not include personally identifiable information (PII) in your workbooks.

7. Acceptable Use

You agree not to use the Service to:

  • Upload content that is illegal, harmful, or violates third-party rights.
  • Attempt to bypass rate limits, credit checks, or security controls.
  • Reverse-engineer, scrape, or redistribute the Service.
  • Impersonate another user or misrepresent your identity.

8. Limitation of Liability

The Service is provided "as is" without warranty. We are not liable for any indirect, incidental, or consequential damages arising from the use of the Service, including but not limited to: inaccurate LLM responses, data loss, or service interruptions. Our total liability is limited to the amount of credits you have purchased in the preceding 12 months.

9. Termination

We reserve the right to suspend or terminate accounts that violate these terms. Upon termination, any remaining credits are forfeited. You may delete your account at any time by contacting support.

10. Changes to Terms

We may update these terms from time to time. Material changes will be communicated via email or a notice on the platform. Continued use of the Service after changes take effect constitutes acceptance of the updated terms.

11. Contact

For questions about these terms, billing, or refund requests, please contact us at the support channel provided on the platform.