Terms of Use

Last updated: 17 October 2026

These terms are the agreement between you and Nirmit Pujara, an individual developer based in India (“the developer”, “we”, “us”) about the Duplex AI software (“Duplex AI”, “the software”) and this website. By downloading, installing or using Duplex AI you agree to them. If you do not agree, please do not use it. The Software Licence, the Privacy Policy and the Refund Policy are part of these terms.

1. What Duplex AI is, and what it is not

Duplex AI scans folders you choose, looks for files that appear to be duplicates, and lets you delete the ones you select. The free version finds exact duplicates. Pro adds modes that find similar files (the same photo edited, the same song in another format, a reworded document, a re-encoded video).

• Similar is not identical. The Pro modes find files that look or sound alike using statistical methods. They can match files that are different and miss files that are the same. Always look at a match before you delete it.
• The software suggests; you decide. Any “recommended keeper” or automatic selection is only a suggestion. Nothing is deleted until you confirm.
• Duplex AI is early-stage software from a single developer. It has bugs we do not know about yet. It is provided for you to try, and we are grateful when you report problems.

2. Your responsibility for your files and data

You are responsible for deciding what to delete and for keeping backups. In particular, you understand and accept that:

• Back up first. Keep a current backup of anything important before you run a clean-up, in particular before your first use and before deleting large numbers of files.
• Recycle Bin is a convenience, not a guarantee. On your main drive, deleted files normally go to the Recycle Bin or Trash, where you can restore them until you empty it. Some places have no bin: USB sticks and other removable drives, network drives and some cloud-synced folders. There, a deletion can be permanent. The software warns you about this and asks you to confirm, but the risk remains yours.
• Cloud-synced folders. Deleting a file inside a folder synced by OneDrive, Dropbox, Google Drive, iCloud or similar usually deletes it on your other devices and online as well, and the provider decides how long it can be recovered. We cannot undo that.
• Files can change or disappear between the scan and the delete. The software tries to detect that and skip such files, but it cannot guarantee it.
• Protected locations. The software refuses to touch certain system folders and any folder you mark as “never delete”. These safeguards reduce risk; they do not remove it.
• Other software and hardware. Antivirus tools, disk errors, power cuts, crashes and similar events can interrupt a scan or a delete and leave files in an unexpected state.

To the fullest extent the law allows, we are not liable for any loss of or damage to data, files, photos, documents, software, income, profit or business, or for any other direct or indirect loss, arising from your use of, or inability to use, Duplex AI, even if we were told it could happen. This applies to bugs, wrong matches and mistakes in the software as well as to your own choices.

3. Pro licence, one computer per licence

• A Pro licence key is for you. It works on one computer at a time. When you activate it, the app sends the key and an anonymous identifier of your computer (a one-way hash, not your name or your files) to the licence provider so that the limit can be enforced. To move to a new computer, contact us.
• Monthly and yearly plans renew automatically until you cancel; you can cancel at any time and keep Pro until the end of the period you already paid for.
• If we ever stop offering Pro, we will give at least six months’ notice on this website, and the Pro features will keep working during that time.
• Pro may stop working if the licence is refunded, charged back, shared, or used in breach of these terms. The app re-checks the licence about once a week and allows a period offline.
• The free version needs no licence and no account.

4. Payments, prices and taxes

Pro is sold through a third-party payment provider (Lemon Squeezy at launch; this page will be updated if that changes) that acts as the seller of record, takes your payment, issues the receipt and handles sales tax or VAT where required. Their terms apply to the payment itself. Prices shown on this website are display prices; the exact amount, including tax and any currency conversion, is shown on the checkout page before you pay. Your bank may add its own conversion or card fees, which we do not control. We may change prices for new purchases at any time; a change never affects a period you have already paid for.

5. Acceptable use

Do not use Duplex AI or this website to break the law, to delete files you have no right to delete, or to harm others. Do not share, resell or publish your licence key, and do not try to bypass the licence check, copy, reverse-engineer or decompile the software, except to the extent the law gives you a right to that despite this clause.

6. Third-party software, models and downloads

Duplex AI includes and uses open-source and third-party components, each under its own licence. The Pro AI modes also download extra components and AI model files from third-party sources the first time you use them (listed in the Privacy Policy). Those are provided by their owners under their own terms, and we do not control their availability or content. If a download is unavailable, the matching mode may not work.

7. Updates

The app can check for updates and, with your approval, install them. Updates may add, change or remove features. We try to make updates safe, and we never touch your own files when updating, but updates are also software and can contain bugs.

8. No warranty

Duplex AI and this website are provided “as is” and “as available”, without warranties of any kind, express or implied, including that they are error-free, uninterrupted, accurate, or fit for a particular purpose. Statements about speed, accuracy or comparisons with other tools describe tests on our own data and may not match your results.

9. Limit of liability

To the fullest extent the law allows, our total liability to you for any claim connected with Duplex AI is limited to the amount you paid for Duplex AI in the 12 months before the claim (and is zero if you only used the free version). Nothing in these terms excludes liability that cannot be excluded by law, such as for fraud or wilful misconduct, or limits rights you have as a consumer that cannot be waived.

10. Ending the agreement

You can stop using Duplex AI at any time by uninstalling it. We may suspend or end a licence that is used in breach of these terms. Sections that by their nature should continue (data-loss responsibility, warranty, liability, governing law) continue after the agreement ends.

11. Changes to these terms

We may update these terms. The date at the top shows the latest version. If a change is significant we will say so on the website or in the app. Continuing to use Duplex AI after a change means you accept it.

12. Governing law and disputes

These terms are governed by the laws of India. Please contact us first so we can try to sort out any problem informally. If that fails, the courts in India have jurisdiction, subject to any mandatory consumer rights you have where you live.

13. Grievance contact (India)

Complaints about the product, the website or a purchase can be sent to the developer at the address below. As required of online sellers in India, we acknowledge complaints within 48 hours and aim to resolve them within one month.

Contact

Questions, complaints or requests about this page: email the developer. We acknowledge messages within 48 hours and aim to resolve them within one month.

This document was written for a small, one-person software project. It is a plain-language agreement, not a substitute for legal advice. If a part of it is found unenforceable, the rest still applies.