Terms of Use

1. Agreement

These Terms of Use (“Terms”) govern your use of the Chat with all AI browser extension (formerly Muse AI Assistant), the website getduoai.com and related services (together, the “Service”), provided by NextApps AI (“we”, “us”). By installing or using the Service you agree to these Terms and to our Privacy Policy. If you don't agree, don't use the Service.

2. Who can use the Service

You must be at least 13 years old (or the minimum age required in your country). If you are under 18, you may use the Service only with a parent's or guardian's permission, and a parent or guardian must make any purchase. If you use the Service for an organization, you confirm you're allowed to accept these Terms for it.

3. What the Service does

The Service is an AI assistant in Chrome's side panel and in a full browser tab. It lets you choose between AI models from different providers to answer questions, work with the page you choose to share, read screenshots and images, help with writing, email and WhatsApp drafts, help with code, generate images and transcribe your voice. The Service drafts content; it never sends emails or messages, submits forms or acts on websites for you.

The list of available models may change: providers release, rename and retire models, and we may add, replace or remove models to keep the Service reliable.

4. No account required

The extension works without creating an account. It identifies your browser with a random install ID and token stored locally. Keep your device secure; anyone with access to your browser profile can use the Service and see your local history.

5. Free plan

The free plan includes 3 AI requests in total, which you can use with any model. Voice transcription doesn't count as a request; image generation does. When free requests are used up, a Pro subscription is needed to continue. We may change the free allowance for future use.

6. Pro subscription

Pro gives unlimited requests on most models, subject to fair use, plus up to 30 requests a day on the most powerful models (currently Claude Opus 5.5, Claude Fable 5.2 and Muse Wonder). Daily allowances reset at 00:00 UTC. “Unlimited” means normal personal use: automated, scripted, resold or abusive traffic may be rate-limited or suspended. Current limits are shown in the extension.

7. Prices, trials and payment

Plans. Pro is offered as a weekly ($5.99), monthly ($10.99) or yearly ($39.99) subscription. The price shown in the extension and at checkout is the price you pay; it may be shown in your local currency and includes or adds taxes as displayed at checkout.

Free trial. The weekly plan may start with a 3-day free trial. A payment method is required. If you don't cancel before the trial ends, the weekly price is charged automatically and then every week. We may limit free trials to one per customer.

Merchant of record. Payments are processed by Dodo Payments, which sells the subscription to you as merchant of record. Your purchase is also subject to Dodo Payments' terms, and your receipt and card statement show Dodo Payments.

Automatic renewal. Subscriptions renew automatically at the end of each period at the then-current price until you cancel.

Price changes. We may change prices for future periods. We'll tell you in advance, and you can cancel before the new price applies.

8. Cancellation and refunds

You can cancel any time in Settings → Manage subscription (the secure Dodo Payments customer portal) or via the link in your receipt email. After cancelling, Pro remains active until the end of the period you've paid for, and you won't be charged again. Uninstalling the extension or deleting your data does not cancel a subscription. Refunds are described in our Refund & cancellation policy. Nothing in these Terms limits rights you have under mandatory consumer law.

9. Using Pro in other browsers

A subscription is linked to the browser where you bought it. You can use it in up to 3 browsers with Restore purchase, by entering a one-time code sent to the email you used at checkout. Subscriptions are personal; sharing or reselling access is not allowed.

10. Acceptable use

You agree not to use the Service to:

• break the law or infringe anyone's rights, including privacy, intellectual property and publicity rights;
• create malware, phishing, spam, scams, or content that harasses, threatens, exploits or endangers anyone, including any content that sexualizes minors;
• generate content intended to deceive, such as impersonating real people or fabricating records;
• process personal or confidential data you're not permitted to share;
• attempt to bypass limits, reverse-engineer or overload the Service, or access it with bots or scripts;
• violate the usage policies of OpenRouter or the model providers (OpenAI, Anthropic, Meta, xAI, Google), which apply to your requests.

We may suspend or limit access for anyone who misuses the Service.

11. AI output

Answers are generated automatically by AI models and can be wrong, incomplete, outdated or offensive. They are not professional advice. Review output carefully — especially code, facts and anything with legal, medical, financial or safety consequences — before relying on it. The Service doesn't browse the web; it answers from the model's training and the content you share. You are responsible for how you use the output, including making sure it doesn't infringe others' rights.

12. Your content

You keep your rights to what you send (“Input”) and, to the extent permitted by law and the providers' terms, to what the Service generates for you (“Output”). You give us a limited permission to process Input only to provide the Service as described in the Privacy Policy. Similar Output may be generated for other users.

13. Our rights

We grant you a personal, non-exclusive, non-transferable, revocable license to use the Service in accordance with these Terms. The Service, its design, code and brand belong to NextApps AI or its licensors. Model names and logos belong to their owners and are used only to identify the models available.

14. Third-party services

The Service relies on third parties (Google Chrome, OpenRouter, AI model providers, Dodo Payments, Resend, Railway, Cloudflare). Their availability and terms are outside our control. We're not responsible for third-party websites you visit or share with the Service.

15. Feedback

If you send us ideas or feedback, we may use them without obligation to you.

16. Availability and changes

We work to keep the Service available, but it may be interrupted for maintenance, provider outages or reasons beyond our control. We may change or discontinue features. If we discontinue the paid Service, we'll stop future renewals and handle unused prepaid periods as required by law.

17. Disclaimer

To the extent permitted by law, the Service is provided “as is” and “as available”, without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, accuracy and non-infringement.

18. Limitation of liability

To the extent permitted by law, we are not liable for indirect, incidental, special, consequential or punitive damages, or for loss of data, profits or business. Our total liability for any claim relating to the Service is limited to the amount you paid us in the 12 months before the claim (or US$50 if you paid nothing). These limits don't apply where the law doesn't allow them, for example for liability for death or personal injury caused by negligence, fraud, or rights you have as a consumer that can't be excluded.

19. Indemnity

If you use the Service in breach of these Terms or the law, you agree to cover reasonable losses and costs this causes us, to the extent permitted by law. This section doesn't apply to consumers where the law prohibits it.

20. Termination

You can stop using the Service at any time by uninstalling the extension (and cancelling any subscription). We may suspend or end access if you seriously or repeatedly breach these Terms. Sections that by their nature should survive (such as liability limits) continue after termination.

21. Governing law and disputes

These Terms are governed by the laws of the Republic of Belarus, without regard to conflict-of-laws rules. If you are a consumer, you also keep the protection of the mandatory laws of your country of residence and may bring claims in your local courts where the law allows. Before starting a dispute, please contact us at romanvlasovdev@gmail.com — most issues can be solved quickly.

22. Changes to these Terms

We may update these Terms. The date at the top shows the latest version. For material changes we'll let you know in advance in the extension or on this website; continuing to use the Service after changes take effect means you accept them.

23. Contact

NextApps AI · Email: romanvlasovdev@gmail.com