Last Updated: June 16, 2026
We are DeepNail Limited ("Company," "we," "us," "our"), a company registered in Hong Kong.
We operate the website https://unfox.ai (the "Site"), as well as any other related products and services that refer or link to these legal terms (the "Legal Terms") (collectively, the "Services").
We provide AI detection tools and related services.
You can contact us by email at [email protected].
These Legal Terms constitute a legally binding agreement made between you, whether personally or on behalf of an entity ("you"), and DeepNail Limited, concerning your access to and use of the Services. You agree that by accessing the Services, you have read, understood, and agreed to be bound by all of these Legal Terms. IF YOU DO NOT AGREE WITH ALL OF THESE LEGAL TERMS, THEN YOU ARE EXPRESSLY PROHIBITED FROM USING THE SERVICES AND YOU MUST DISCONTINUE USE IMMEDIATELY.
The information provided when using the Services is not intended for distribution to or use by any person or entity in any jurisdiction or country where such distribution or use would be contrary to law or regulation or which would subject us to any registration requirement within such jurisdiction or country. Accordingly, those persons who choose to access the Services from other locations do so on their own initiative and are solely responsible for compliance with local laws, if and to the extent local laws are applicable.
The Services are not tailored to comply with industry-specific regulations (Health Insurance Portability and Accountability Act (HIPAA), Federal Information Security Management Act (FISMA), etc.), so if your interactions would be subjected to such laws, you may not use the Services. You may not use the Services in a way that would violate the Gramm-Leach-Bliley Act (GLBA).
We are the owner or the licensee of all intellectual property rights in our Services, including all source code, databases, functionality, software, website designs, audio, video, text, photographs, and graphics in the Services (collectively, the "Content"), as well as the trademarks, service marks, and logos contained therein (the "Marks").
Our Content and Marks are protected by copyright and trademark laws (and various other intellectual property rights and unfair competition laws) and treaties around the world.
The Content and Marks are provided in or through the Services "AS IS" for your personal, non-commercial use or internal business purpose only.
Subject to your compliance with these Legal Terms, including the "PROHIBITED ACTIVITIES" section below, we grant you a non-exclusive, non-transferable, revocable license to:
solely for your personal, non-commercial use or internal business purpose.
Except as set out in this section or elsewhere in our Legal Terms, no part of the Services and no Content or Marks may be copied, reproduced, aggregated, republished, uploaded, posted, publicly displayed, encoded, translated, transmitted, distributed, sold, licensed, or otherwise exploited for any commercial purpose whatsoever, without our express prior written permission.
Please review this section and the "PROHIBITED ACTIVITIES" section carefully prior to using our Services to understand the (a) rights you give us and (b) obligations you have when you post or upload any content through the Services.
Submissions: By directly sending us any question, comment, suggestion, idea, feedback, or other information about the Services ("Submissions"), you agree to assign to us all intellectual property rights in such Submission.
Contributions: The Services may invite you to chat, contribute to, or participate in blogs, message boards, online forums, and other functionality during which you may create, submit, post, display, transmit, publish, distribute, or broadcast content and materials to us or through the Services ("Contributions").
By sending us Submissions and/or posting Contributions through any part of the Services, you confirm that you have read and agree with our "PROHIBITED ACTIVITIES" and warrant that your Submissions and/or Contributions do not constitute confidential information.
We respect the intellectual property rights of others. If you believe that any material available on or through the Services infringes upon any copyright you own or control, please immediately refer to the "COPYRIGHT INFRINGEMENTS" section below.
By using the Services, you represent and warrant that: (1) all registration information you submit will be true, accurate, current, and complete; (2) you will maintain the accuracy of such information and promptly update such registration information as necessary; (3) you have the legal capacity and you agree to comply with these Legal Terms; (4) you are not a minor in the jurisdiction in which you reside, or if a minor, you have received parental permission to use the Services; (5) you will not access the Services through automated or non-human means; (6) you will not use the Services for any illegal or unauthorized purpose; and (7) your use of the Services will not violate any applicable law or regulation.
If you provide any information that is untrue, inaccurate, not current, or incomplete, we have the right to suspend or terminate your account and refuse any and all current or future use of the Services (or any portion thereof).
Affiliates agree to adhere to all terms outlined in the Affiliate Program section, in addition to complying with all other provisions of these Terms of Service.
You may be required to register to use the Services. You agree to keep your password confidential and will be responsible for all use of your account and password. We reserve the right to remove, reclaim, or change a username you select if we determine, in our sole discretion, that such username is inappropriate, obscene, or otherwise objectionable.
You agree that your account is for your individual use only. Account sharing is strictly prohibited. Any unauthorized account sharing will result in immediate account termination without refund.
We accept the following forms of payment:
You agree to provide current, complete, and accurate purchase and account information for all purchases made via the Services. Sales tax will be added to the price of purchases as deemed required by us. We may change prices at any time. All payments shall be in US dollars.
You agree to pay all charges at the prices then in effect for your purchases and any applicable shipping fees, and you authorize us to charge your chosen payment provider for any such amounts upon placing your order.
We reserve the right to refuse any order placed through the Services. We may, in our sole discretion, limit or cancel quantities purchased per person, per household, or per order.
We may, from time to time, offer free trial periods for new users. The duration, eligibility, and terms of any trial will be specified at the time of the offer. We reserve the right to modify, suspend, or discontinue the trial offer at any time, with or without notice, at our sole discretion.
You can cancel your subscription at any time by logging into your account, navigating to the Settings page, and selecting the Billing section. For users on a paid subscription, cancellation will take effect at the end of the current paid billing period, and the user will continue to have access to their subscription benefits until that date. No refunds or credits will be issued for any partial billing period.
If you are unsatisfied with our Services, please email us at [email protected].
All billing-related communications are sent by our payment processor. The user is responsible for ensuring their email address is current.
You may not access or use the Services for any purpose other than that for which we make the Services available. The Services may not be used in connection with any commercial endeavors except those that are specifically endorsed or approved by us.
As a user of the Services, you agree not to:
The Services may invite you to chat, contribute to, or participate in blogs, message boards, online forums, and other functionality, and may provide you with the opportunity to create, submit, post, display, transmit, perform, publish, distribute, or broadcast content and materials to us or on the Services ("Contributions").
When you create or make available any Contributions, you thereby represent and warrant that:
Any use of the Services in violation of the foregoing violates these Legal Terms and may result in, among other things, termination or suspension of your rights to use the Services.
By posting your Contributions to any part of the Services, you automatically grant, and you represent and warrant that you have the right to grant, to us an unrestricted, unlimited, irrevocable, perpetual, non-exclusive, transferable, royalty-free, fully-paid, worldwide right, and license to host, use, copy, reproduce, disclose, sell, resell, publish, broadcast, retitle, archive, store, cache, publicly perform, publicly display, reformat, translate, transmit, excerpt, and distribute such Contributions.
We do not assert any ownership over your Contributions. You retain full ownership of all of your Contributions and any intellectual property rights or other proprietary rights associated with your Contributions.
We have the right, in our sole and absolute discretion, to edit, redact, or otherwise change any Contributions; to re-categorize any Contributions; and to pre-screen or delete any Contributions at any time and for any reason, without notice.
The Services may contain links to other websites ("Third-Party Websites") as well as articles, photographs, text, graphics, pictures, designs, music, sound, video, information, applications, software, and other content or items belonging to or originating from third parties ("Third-Party Content"). Such Third-Party Websites and Third-Party Content are not investigated, monitored, or checked for accuracy, appropriateness, or completeness by us, and we are not responsible for any Third-Party Websites accessed through the Services or any Third-Party Content posted on, available through, or installed from the Services.
We allow advertisers to display their advertisements and other information in certain areas of the Services, such as sidebar advertisements or banner advertisements. We simply provide the space to place such advertisements, and we have no other relationship with advertisers.
We reserve the right, but not the obligation, to: (1) monitor the Services for violations of these Legal Terms; (2) take appropriate legal action against anyone who, in our sole discretion, violates the law or these Legal Terms; (3) refuse, restrict access to, limit the availability of, or disable any of your Contributions or any portion thereof; (4) remove from the Services or otherwise disable all files and content that are excessive in size or are in any way burdensome to our systems; and (5) otherwise manage the Services in a manner designed to protect our rights and property and to facilitate the proper functioning of the Services.
We care about data privacy and security. Please review our Privacy Policy. By using the Services, you agree to be bound by our Privacy Policy, which is incorporated into these Legal Terms.
We respect the intellectual property rights of others. If you believe that any material available on or through the Services infringes upon any copyright you own or control, please immediately notify us using the contact information provided below.
These Legal Terms shall remain in full force and effect while you use the Services. WITHOUT LIMITING ANY OTHER PROVISION OF THESE LEGAL TERMS, WE RESERVE THE RIGHT TO, IN OUR SOLE DISCRETION AND WITHOUT NOTICE OR LIABILITY, DENY ACCESS TO AND USE OF THE SERVICES TO ANY PERSON FOR ANY REASON OR FOR NO REASON.
If we terminate or suspend your account for any reason, you are prohibited from registering and creating a new account under your name, a fake or borrowed name, or the name of any third party, even if you may be acting on behalf of the third party.
BY INITIATING A DISPUTE OR CHARGEBACK THROUGH YOUR FINANCIAL INSTITUTION OR PAYMENT PROVIDER, YOU ACKNOWLEDGE AND AGREE THAT WE RESERVE THE RIGHT TO IMMEDIATELY TERMINATE YOUR ACCOUNT, DENY FUTURE ACCESS TO THE SERVICES, AND REVOKE ANY ASSOCIATED CONTENT OR BENEFITS WITHOUT NOTICE.
BY USING THE SERVICES, YOU AGREE THAT ANY CHARGEBACK, DISPUTE, OR CLAIM AGAINST A PAYMENT WILL AUTOMATICALLY VOID YOUR RIGHT TO CONTINUE USING THE SERVICES AND WAIVE YOUR ELIGIBILITY FOR REFUNDS OR OTHER COMPENSATORY ACTION.
We reserve the right to change, modify, or remove the contents of the Services at any time or for any reason at our sole discretion without notice. However, we have no obligation to update any information on our Services. We will not be liable to you or any third party for any modification, price change, suspension, or discontinuance of the Services.
We cannot guarantee the Services will be available at all times. We may experience hardware, software, or other problems or need to perform maintenance related to the Services, resulting in interruptions, delays, or errors.
These Legal Terms and your use of the Services are governed by and construed in accordance with the laws applicable to agreements made and to be performed within the jurisdiction in which DeepNail Limited is registered, without regard to its conflict of law principles.
To expedite resolution and control the cost of any dispute, controversy, or claim related to these Legal Terms, the Parties agree to first attempt to negotiate any Dispute informally for at least thirty (30) days before initiating arbitration.
If the Parties are unable to resolve a Dispute through informal negotiations, the Dispute will be finally and exclusively resolved by binding arbitration. The arbitration may be conducted in person, through the submission of documents, by phone, or online.
If for any reason, a Dispute proceeds in court rather than arbitration, the Dispute shall be commenced or prosecuted in the courts located in the jurisdiction in which DeepNail Limited is registered, and the Parties hereby consent to, and waive all defenses of lack of personal jurisdiction.
The Parties agree that any arbitration shall be limited to the Dispute between the Parties individually. To the full extent permitted by law, no arbitration shall be joined with any other proceeding; there is no right or authority for any Dispute to be arbitrated on a class-action basis.
The Parties agree that the following Disputes are not subject to the above provisions concerning informal negotiations binding arbitration: any Disputes seeking to enforce or protect, or concerning the validity of, any of the intellectual property rights of a Party; any Dispute related to, or arising from, allegations of theft, piracy, invasion of privacy, or unauthorized use; and any claim for injunctive relief.
There may be information on the Services that contains typographical errors, inaccuracies, or omissions, including descriptions, pricing, availability, and various other information. We reserve the right to correct any errors, inaccuracies, or omissions and to change or update the information on the Services at any time, without prior notice.
THE SERVICES ARE PROVIDED ON AN AS-IS AND AS-AVAILABLE BASIS. YOU AGREE THAT YOUR USE OF THE SERVICES WILL BE AT YOUR SOLE RISK. TO THE FULLEST EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, IN CONNECTION WITH THE SERVICES AND YOUR USE THEREOF.
OUR AI DETECTION SERVICES ARE DESIGNED TO PROVIDE A LIKELIHOOD ASSESSMENT REGARDING WHETHER TEXT RESEMBLES AI-GENERATED CONTENT. HOWEVER, DUE TO THE CONSTANTLY EVOLVING NATURE OF AI GENERATION AND DETECTION TOOLS, WE CANNOT GUARANTEE THAT THE RESULTS PROVIDED BY OUR SERVICES WILL ALWAYS BE ABSOLUTELY ACCURATE.
IN NO EVENT WILL WE OR OUR DIRECTORS, EMPLOYEES, OR AGENTS BE LIABLE TO YOU OR ANY THIRD PARTY FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, EXEMPLARY, INCIDENTAL, SPECIAL, OR PUNITIVE DAMAGES, INCLUDING LOST PROFIT, LOST REVENUE, LOSS OF DATA, OR OTHER DAMAGES ARISING FROM YOUR USE OF THE SERVICES, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
We offer an affiliate program that allows affiliates to earn a commission on all earnings, including recurring payments, generated through their unique affiliate link. Commissions will be paid out via the affiliate's chosen payment method; however, the availability of specific payment methods is not guaranteed.
Affiliates are responsible for any fees associated with receiving their commission payouts. We do not cover these fees.
We reserve the right to revoke or withhold affiliate commissions if we determine, at our sole discretion, that the affiliate is abusing the program in any way, including but not limited to:
We may also limit or adjust affiliate earnings for any abuse or other issues identified.
Affiliates are responsible for any taxes owed on commissions earned.
We reserve the right to immediately terminate an affiliate's participation in the program and withhold any unpaid commissions upon discovery of program abuse or violation of these terms.
You agree to defend, indemnify, and hold us harmless, including our subsidiaries, affiliates, and all of our respective officers, agents, partners, and employees, from and against any loss, damage, liability, claim, or demand, including reasonable attorneys' fees and expenses, made by any third party due to or arising out of: (1) your Contributions; (2) use of the Services; (3) breach of these Legal Terms; (4) any breach of your representations and warranties set forth in these Legal Terms; (5) your violation of the rights of a third party; or (6) any overt harmful act toward any other user of the Services.
We will maintain certain data that you transmit to the Services for the purpose of managing the performance of the Services, as well as data relating to your use of the Services. Although we perform regular routine backups of data, you are solely responsible for all data that you transmit or that relates to any activity you have undertaken using the Services.
Visiting the Services, sending us emails, and completing online forms constitute electronic communications. You consent to receive electronic communications, and you agree that all agreements, notices, disclosures, and other communications we provide to you electronically, via email and on the Services, satisfy any legal requirement that such communication be in writing.
If any complaint with us is not satisfactorily resolved, you can contact the Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs in writing at 1625 North Market Blvd., Suite N 112, Sacramento, California 95834 or by telephone at (800) 952-5210 or (916) 445-1254.
These Legal Terms and any policies or operating rules posted by us on the Services or in respect to the Services constitute the entire agreement and understanding between you and us. Our failure to exercise or enforce any right or provision of these Legal Terms shall not operate as a waiver of such right or provision.
We offer a 14-day refund policy for all purchases. Refunds are only available if there has been absolutely no usage on your account whatsoever. Any usage of our services, at any point, immediately voids refund eligibility. To request a refund within the 14-day window, please contact our customer support team.
In order to resolve a complaint regarding the Services or to receive further information regarding use of the Services, please contact us at:
DeepNail Limited
Email: [email protected]
Website: https://unfox.ai
At Unfox, we are committed to the responsible and ethical use of AI detection technology. Our platform is designed to help users identify AI-generated text accurately, and we urge all users to utilize it responsibly and ethically.
We believe that ethical use of our platform is crucial for upholding trust and integrity in academic, professional, and creative contexts.
The API is intended for use by blog writers for content automation and businesses seeking to whitelabel and resell the product with our explicit, written approval.
Licensee shall not use the API or any output generated through the API ("API Content") for training, developing, or improving any artificial intelligence, machine learning, or similar technologies ("AI Models"). This prohibition includes, but is not limited to, using API Content as training data, fine-tuning existing models, or creating new models.
Licensee retains ownership of the content generated using the API, subject to the following conditions:
If we discover that API Content has been used in violation of these Terms, including but not limited to training AI Models, we reserve the right to:
We reserve the right to audit Licensee's use of the API and API Content to ensure compliance with these Terms. Licensee agrees to cooperate fully with any such audit and provide any information reasonably requested by us.
Licensee agrees to indemnify, defend, and hold us harmless from any claims, damages, or expenses arising from Licensee's violation of these Terms, including any unauthorized use of API Content for AI Model training or other prohibited uses.
The obligations and rights set forth in this section shall survive the termination or expiration of the agreement between Licensee and us.
By using our API, Licensee acknowledges and agrees to abide by these terms. We reserve the right to modify these terms at any time, with such modifications becoming effective immediately upon posting.