Last updated: April 2025
These Terms of Service ("Terms") govern your use of Proton (the "Software"), a desktop application, and the website at protonai.app. By downloading, installing, or using Proton, you agree to these Terms.
Proton is offered under a monthly subscription. Upon subscribing, you receive a license key that grants you the right to use the Software on one device. Your subscription and license key are personal and non-transferable.
Subscriptions automatically renew each month unless cancelled before the renewal date. All billing is handled by Lemon Squeezy. By subscribing, you also agree to Lemon Squeezy's Terms of Service.
Two subscription plans are available:
The application enforces plan restrictions automatically via your license key.
You may use Proton for lawful personal or business purposes. You agree not to:
Proton integrates with third-party AI services (Anthropic, OpenAI, ElevenLabs, etc.) that require separate accounts and API keys. Your use of those services is governed by their respective terms and privacy policies. We are not responsible for the actions, content, or policies of third-party services.
You may cancel your subscription at any time through your Lemon Squeezy account portal. Upon cancellation, your access continues until the end of the current billing period. Refunds are handled according to Lemon Squeezy's Refund Policy.
Proton is provided "as is" without warranties of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. We do not warrant that the Software will be error-free, uninterrupted, or that the AI outputs will be accurate or reliable.
AI-generated content may be incorrect, incomplete, or misleading. You are solely responsible for reviewing and verifying any output before acting on it.
To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including loss of profits, data, or goodwill, arising from your use of or inability to use Proton. Our total liability to you for any claim shall not exceed the amount you paid us in the three months preceding the claim.
All intellectual property rights in Proton belong to us. These Terms do not grant you any rights to our trademarks, logos, or other brand features.
We may update these Terms from time to time. We will notify subscribers of material changes via email. Continued use of Proton after changes take effect constitutes acceptance of the updated Terms.
These Terms are governed by the laws of the jurisdiction in which Proton is operated, without regard to conflict-of-law principles. Any disputes shall be resolved in the competent courts of that jurisdiction.
For questions about these Terms, contact us at:
legal@protonai.app