Plain English. This agreement covers REX Accounts, REX Paperworks and REX Visio2DXF supplied by Energy Conscious Design Limited, Auckland, New Zealand. Version 1.5, 14 October 2026. It includes the refund terms and the limits on our liability; the fair use support policy and the privacy statement form part of it.
Version 1.5 — 14 October 2026
Changes since version 1.4: REX Paperworks and REX Visio2DXF are licensed to one named user and are no longer tied to a computer (clauses 2.2 to 2.5), and the key is emailed when you buy.
These terms are between you and Energy Conscious Design Limited, trading as REX Office Software ("ECD", "we", "us"), Auckland, New Zealand, the maker of the REX software range: REX Accounts, REX Paperworks and REX Visio2DXF (together "REX" or "the software"). By ticking "I accept" on the activation screen, by installing, activating or using REX, or by buying a licence key, you agree to these terms. The software records the version of these terms you accepted and the date. If you are accepting on behalf of a company or other organisation, you confirm you are allowed to do so.
1.1 You are buying a licence to use the software, not the software itself. ECD owns REX and licenses it to you under these terms.
1.2 The licence is a one-off purchase. There is no subscription and no recurring fee.
1.3 The current products, their functions and system requirements are described on each product's page at rexofficesoftware.com. Those pages, together with the manual, describe what the software does. Nothing else, including anything a salesperson or support reply says, adds to that description unless we confirm it in writing.
2.1 REX Accounts: a company-name licence. The licence is issued to one named business, company or sole trader (the "licence holder"). The licence key carries that name, and it appears in the software and on the documents it produces. The name cannot be changed inside the software. The licence holder may install and use REX Accounts on any number of computers that it owns or controls and that are used in its own business, whether running Windows or macOS, using the same key.
2.2 REX Paperworks and REX Visio2DXF: a one-user licence. Each licence is issued to one named individual (the "licensed user"). The licence key carries the licensed user's name. The licensed user may install and use the software on the computers that they use themselves (for example an office PC and a laptop, running Windows or macOS), but the software may be used only by that person. A second person needs their own licence, so a business needs a separate copy for each user. The software shows the licensed user's name, and the company if the user entered one, at the bottom of its window and on its About page. You must enter your own name and must not enter another person's name. There is no free trial and there are no subscriptions for these two products.
2.3 Getting your key for REX Paperworks or REX Visio2DXF. After you buy, we email the key to the address you bought with. It is made for the name you gave at checkout; if you want a different licensed name, tell us before you activate. You enter that name and the key once, in the software. The company name you may also enter is for display only and does not affect the key. How we handle these details is set out in the Privacy Statement.
2.4 A new computer, or a new user. You can install the software on a new computer of your own and enter the same name and key; nothing needs our approval. If the licensed user of REX Paperworks or REX Visio2DXF leaves a business, the business may ask us to reissue the key to a replacement user, on the basis that the previous user stops using the software.
2.5 No sharing. A REX Accounts licence must not be used by any other business, including a related company, a client, a franchisee or a company you also own, unless that business holds its own licence; each separate legal entity needs its own licence. A REX Paperworks or REX Visio2DXF licence must not be used by anyone other than the licensed user, and each separate user needs their own licence.
2.6 You may not sell, rent, lend, sublicense or transfer a licence or key to anyone else.
2.7 Licence keys are checked on your computer without an internet connection. We may refuse, cancel or lock a key that we reasonably believe has been shared, published, resold or obtained by fraud or a reversed payment.
3.1 REX Accounts can be used free for 60 days with a trial key. You request the key on our website by giving your name, your company or trading name and an email address; the key is issued to that company name and emailed to you. One trial per company name and per email address. The trial key runs for 60 days from the day it is issued.
3.2 At the end of the trial the program locks until a licence key is entered. Your data is kept and is available again once a key is entered, but we recommend you back it up before the trial ends.
3.3 Documents produced during the trial carry a "REX Accounts trial version" watermark. You must not remove or hide the watermark or use trial output as if it came from a licensed copy.
3.4 The trial is provided so you can decide whether the software suits you before buying. Everything in these terms about warranty and liability applies to the trial as well.
3.5 REX Paperworks and REX Visio2DXF have no free trial. Their manuals describe what they do, and the refund policy in clause 6 applies if a product does not do what its product page says.
4.1 Your purchase includes all updates to the product that we release during the 12 months after your purchase date. Updates are provided by download from our website; the software does not download anything itself.
4.2 After 12 months the version you have keeps working for as long as your computer can run it, with no further payment. There is no obligation on us to keep releasing updates, and no obligation on you to buy any.
4.3 If you want a version released after your 12 months, it is a new purchase at the price shown on the website at the time. We do not promise upgrade discounts.
4.4 We may stop supporting older operating systems or older versions of REX. We will say so on the website.
5.1 Prices are shown in US dollars on the website and may change at any time. The price in force when you order is the price you pay.
5.2 Card payments are handled by Lemon Squeezy (Lemon Squeezy LLC), which acts as merchant of record. That means Lemon Squeezy is the seller of record for the payment transaction, collects any applicable sales tax, GST or VAT and issues your receipt, and its own terms apply to the payment. ECD remains the licensor of the software and these terms govern your use of it.
5.3 If you order by email or invoice, payment is to ECD's bank account in the currency and by the date shown on the invoice. The licence key is sent once payment has cleared.
5.4 You are responsible for any tax or bank charge that your country or bank adds to the purchase.
6.1 If, within 14 days of purchase, the software does not do what its product page says it does on a computer that meets the published system requirements, email [email protected] with your order details and a description of the problem. If we cannot fix it within a reasonable time, we will refund the price you paid.
6.2 We do not otherwise give refunds for change of mind, for buying the wrong product, for the software lacking a feature that the product page does not claim, or for problems caused by your computer, other software or your network. REX Accounts has a 60-day trial so you can test it before buying; REX Paperworks and REX Visio2DXF have no trial, so read their manuals first.
6.3 Refunds are made through the same payment channel you used. A refunded licence key is cancelled and must no longer be used.
6.4 Nothing in this clause limits your rights under clause 11.
6.5 Refunds are paid the way you paid: by Lemon Squeezy to your card, or by ECD to your bank account. Where the Consumer Guarantees Act 1993 (New Zealand) or the Australian Consumer Law gives you a right to a refund, repair or replacement, that right is not limited by the 14-day period above.
7.1 You may not copy the software except for backup, or reverse engineer, decompile, modify or make derivative works from it, except where the law allows this regardless of this clause.
7.2 You may not remove or alter any copyright notice, licence name or watermark, or try to bypass the licence check or the trial period.
7.3 You may not use the software for anything unlawful, or publish or share your licence key.
7.4 You may not use the software to provide a hosted, bureau or software-as-a-service offering to other businesses without a written agreement with us.
7.5 You may not use the email features of REX Accounts to send unsolicited commercial messages. You are responsible for complying with the Unsolicited Electronic Messages Act 2007 (New Zealand), the Spam Act 2003 (Australia) and any similar law where you are.
8.1 ECD owns all copyright and other intellectual property in REX, the manuals, the website and the REX name and logos. All rights not expressly given to you in these terms are reserved.
8.2 You own your data. Files you create with REX (your books, PDFs, DXF drawings and so on) are yours. We have no access to them and claim no rights in them.
8.3 Third-party components included in the software are licensed under their own open-source licences. They are listed, with their licence texts, in the file NOTICES.txt in each product's program folder, which is also published on the website's Manuals page.
8.4 Feedback. If you send us ideas, suggestions or comments about REX, we may use them to improve the software without payment or any obligation to you, and you confirm you are entitled to give them to us.
8.5 Marks on documents. Documents produced by REX Accounts carry a small "Produced with REX Accounts" line, and trial output carries the trial watermark (clause 3.3). You may not remove or hide either.
9.1 Backups. You are responsible for backing up your data files and keeping copies of your licence key and receipt. REX includes backup features, but it is up to you to use them and to store copies somewhere other than the working computer. We cannot recover lost data.
9.2 Checking figures. REX Accounts calculates figures from the entries you make. You are responsible for the accuracy and completeness of what you enter and for checking the results. We recommend you have your accounts and tax figures reviewed by an accountant or tax agent.
9.3 Tax and statutory filing. REX Accounts prepares GST (New Zealand) and BAS (Australia) figures from your entries. It does not file anything. You are responsible for filing your own returns with Inland Revenue, the Australian Taxation Office or any other body, on time and correctly, and for paying any tax due.
9.4 Payroll. REX Accounts records payroll figures you enter. It does not calculate PAYE, KiwiSaver, superannuation, student loan, ACC or other deductions, and it is not a payroll system. You must use an approved payroll calculator or payroll service and check the figures yourself.
9.5 No advice. ECD does not provide accounting, bookkeeping, tax or legal advice. Help files, manuals, examples and support replies describe how to use the software, not what is right for your business.
9.6 Your computer. You are responsible for keeping your computer, operating system and other software secure and up to date, and for meeting the system requirements.
10.1 Except as stated in clause 11, the software, manuals and support are provided "as is" and "as available". To the extent the law allows, we exclude all warranties, conditions and guarantees, whether express or implied (including under Part 3 of the Contract and Commercial Law Act 2017 and any equivalent law elsewhere), including those of merchantability, satisfactory quality, fitness for any particular purpose and non-infringement.
10.2 We do not promise that the software is error-free, that it will run without interruption, that it will suit your particular business or that it will remain compatible with future operating systems, hardware or third-party software.
10.3 We do not promise that figures produced by the software comply with any tax law or accounting standard. That depends on your entries and on your own checks.
11.1 New Zealand. Nothing in these terms excludes, restricts or modifies any right or remedy you have under the Consumer Guarantees Act 1993 or the Fair Trading Act 1986 that cannot lawfully be excluded.
11.2 Business customers in New Zealand. If you are acquiring the software in trade (that is, for the purposes of a business), you agree that the Consumer Guarantees Act 1993 does not apply to the supply, and that sections 9, 12A, 13 and 14(1) of the Fair Trading Act 1986 do not apply as between you and ECD, as permitted by section 43 of the Consumer Guarantees Act and section 5D of the Fair Trading Act. You and we agree that this is fair and reasonable given that REX is business software sold at a modest one-off price with a free trial and a published refund policy. Because REX Accounts is designed for businesses, we expect almost all customers will be in trade.
11.3 Australia. If you are in Australia, our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. Where the Australian Consumer Law allows us to limit our liability for a failure to comply with a guarantee (goods not ordinarily acquired for personal, domestic or household use), our liability is limited, at our choice, to replacing the software, supplying it again, or paying the cost of doing so.
11.4 Other countries. If the law of your country gives you consumer rights that cannot be excluded, those rights apply and the rest of this agreement applies as far as the law allows.
12.1 To the extent the law allows, and subject to clause 11, our total liability to you for all claims arising out of or connected with the software, these terms or any support we give, whether in contract, tort (including negligence), under statute or otherwise, is limited to the amount you paid ECD (or Lemon Squeezy on our behalf) for the licence that the claim relates to. For the free trial, that amount is nil.
12.2 To the extent the law allows, we are not liable to you for any:
(a) loss of or damage to data, or the cost of recovering or re-entering data;
(b) loss of profit, revenue, business, goodwill or anticipated savings;
(c) penalties, interest, use-of-money interest or other costs arising from late, incorrect or missed tax, GST, BAS, payroll or other statutory filings or payments;
(d) costs of accountants, tax agents, lawyers or other advisers;
(e) loss caused by your computer, operating system, network, other software, or by someone else's actions;
(f) indirect, special or consequential loss of any kind,
even if we were told it might happen.
12.3 Nothing in this clause limits liability for fraud, or for death or personal injury caused by negligence, or any other liability that the law does not allow to be limited.
12.4 You agree that these limits are reasonable given the price of the software, the free trial, the fact that the software runs entirely on your computer under your control, and that you can protect yourself by keeping backups and having your figures checked.
12.5 Each of us must take reasonable steps to limit any loss, damage or cost we may suffer in connection with the software or these terms.
13.1 You may stop using the software at any time by uninstalling it. No refund is due except under clause 6 or 11.
13.2 We may end your licence by written notice (email to the address we hold) if you seriously breach these terms, for example by sharing or reselling the key, bypassing the licence check or trial, or if your payment is reversed and not replaced within 14 days. On termination you must stop using the software and delete all copies. Clauses 8, 9, 10, 11, 12 and 15 continue to apply.
13.3 Your data files remain yours after termination. REX Accounts can export data in standard formats; we recommend you export before you stop using the software.
14.1 We may update these terms. The version in force when you buy applies to that purchase. If you install a later version of the software, the terms published with that version apply to it; we will show the date and version number at the top and keep earlier versions available on request.
14.2 We may change, add or remove features in new versions. We will not remotely change or disable a version already installed on your computer.
15.1 Governing law. These terms are governed by the law of New Zealand. You and we agree that the courts of New Zealand, in Auckland where possible, have non-exclusive jurisdiction. Disputes under the Disputes Tribunal limit may be taken there. If you are a consumer in Australia, this clause does not take away your right to bring a claim in Australia under the Australian Consumer Law.
15.2 Whole agreement. These terms, the product page and the manual are the whole agreement between you and us about the software. They replace any earlier discussions.
15.3 Severance. If any part of these terms is found to be unenforceable, the rest still applies.
15.4 No waiver. If we do not enforce a term, that does not mean we have given it up.
15.5 Contact. Energy Conscious Design Limited, Auckland, New Zealand. Email: [email protected].
15.6 Notices. We may give you any notice under these terms by email to the address on your order or the last address you gave us, and it is treated as received the next working day. You may give us notice by email to [email protected].
15.7 Assignment. You may not transfer the licence to anyone else except by the legal-name-change process in clause 2.4. We may transfer our rights and obligations under these terms to a buyer of the REX business, who must honour them on the same terms; we will tell you by email or on the website if that happens.