← Back to Home

Terms of Service

Last updated: April 7, 2026

1. Agreement to Terms

By accessing or using the services provided by Signal1st LLC ("Signal1st," "we," "our," or "us"), including our website at signal1st.com and any mobile applications we publish, you agree to be bound by these Terms of Service ("Terms"). If you do not agree with these Terms, please do not use our services.

2. Description of Services

Signal1st develops and operates mobile applications, including but not limited to:

  • Charisma Lab — An AI-powered iOS speaking practice app that provides real-time feedback on communication skills.
  • EarlyProof — A documentation and verification tool for capturing important information.

We also use advertising platforms, including Google Ads, to promote our applications and analyze campaign performance.

3. User Accounts

Some of our services may require you to create an account. You are responsible for maintaining the confidentiality of your account credentials and for all activities that occur under your account. You agree to notify us immediately of any unauthorized use of your account.

4. Acceptable Use

You agree not to:

  • Use our services for any unlawful purpose
  • Attempt to gain unauthorized access to our systems or networks
  • Interfere with or disrupt the operation of our services
  • Reproduce, distribute, or create derivative works from our content without permission
  • Use automated means to access our services without our consent

5. Intellectual Property

All content, features, and functionality of our services — including text, graphics, logos, icons, images, software, and underlying code — are the property of Signal1st LLC and are protected by copyright, trademark, and other intellectual property laws. You may not use our trademarks or branding without prior written consent.

6. Google Ads and Advertising

Signal1st uses the Google Ads platform and Google Ads API to manage advertising campaigns for our applications. Our use of the Google Ads API is subject to the Google Ads API Terms and Conditions. Advertising data collected through these campaigns is used solely for the purpose of measuring and improving the effectiveness of our user acquisition efforts.

7. Disclaimers

Our services are provided "as is" and "as available" without warranties of any kind, whether express or implied. We do not guarantee that our services will be uninterrupted, error-free, or free of harmful components.

8. Limitation of Liability

To the fullest extent permitted by law, Signal1st LLC shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or related to your use of our services, even if we have been advised of the possibility of such damages. Our total liability shall not exceed the amount you paid to us, if any, in the twelve (12) months preceding the claim.

9. Termination

We may suspend or terminate your access to our services at any time and for any reason, including violation of these Terms. Upon termination, your right to use our services ceases immediately.

10. Changes to These Terms

We may update these Terms from time to time. We will notify you of material changes by posting the updated Terms on this page and updating the "Last updated" date. Your continued use of our services after changes are posted constitutes your acceptance of the revised Terms.

11. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the United States, without regard to conflict of law principles.

12. Contact Us

If you have questions about these Terms of Service, please contact us at:

Email: team@signal1st.com