Terms of Use — Rapid Invoice
Last updated: 2026-07-03 App: Rapid Invoice Platform: Android (Google Play)
1. Who provides Rapid Invoice
Rapid Invoice ("the app", "we", "us", "our") is provided by:
- Name / trading name: Merville Group Ltd, trading as Merville Digital
- Contact email: info@rapidinvoice.co.uk
- Registered office / company number: 128 City Road, London, EC1V 2NX, United Kingdom — Company No. 17111858 (registered in England and Wales)
These Terms of Use ("Terms") govern your use of Rapid Invoice. By installing or using the app, you agree to these Terms.
2. What the app does (and what it does not do)
Rapid Invoice is a document and record tool for tradespeople and small businesses. It helps you:
- Record customers, quotes, estimates, and invoices.
- Enter VAT and CIS values that you have decided are correct.
- Generate PDFs of those documents.
- Back up and restore your records via a ZIP file you control.
Rapid Invoice is not an accounting product, a tax-advice product, a bookkeeping product, or a regulated financial service. It does not:
- Calculate, suggest, default, or recommend any specific VAT rate, CIS rate, or other tax treatment.
- File any returns, communicate with HMRC, or integrate with any government system.
- Provide accounting advice, tax advice, or legal advice.
- Verify the accuracy of any figure you enter.
You are responsible for the correctness of every value you enter and for the suitability of any document the app produces. If you are unsure about VAT, CIS, or any other tax treatment, consult HMRC or a qualified accountant.
The optional VAT helper is a calculator, not tax advice. Where you enable the VAT helper in Settings, the app multiplies a document's subtotal by a percentage rate that you supply. The app does not provide, suggest, or validate that rate, and does not determine whether any VAT treatment (standard, reduced, zero-rated, exempt, outside the scope, or reverse charge) applies to your work. The result of the calculation is an editable draft value; you remain responsible for confirming the VAT amount on every document before sending it.
The optional CIS helper is a calculator, not tax advice. Where you enable the CIS helper in Settings, the app multiplies the labour portion of a document (line items you have tagged as labour) by a percentage rate that you supply. The app does not provide, suggest, or validate that rate, does not determine your verification status with any contractor (registered 20%, unregistered 30%, or gross payment 0%), and does not check whether the deduction is owed at all. The result of the calculation is an editable draft value; you remain responsible for confirming the CIS deduction on every document before sending it and for any associated contractor monthly return.
3. Your licence to use the app
When you purchase Rapid Invoice through Google Play, you receive a personal, non-exclusive, non-transferable licence to install and use the app on any Android device linked to the Google account that made the purchase. The licence is granted for the lifetime of the app and is governed by the Google Play licence terms in addition to these Terms.
You may not:
- Redistribute, resell, sublicense, or rent the app.
- Reverse-engineer, decompile, or attempt to extract source code except to the extent permitted by law (e.g. for interoperability under the Copyright, Designs and Patents Act 1988).
- Use the app in any way that breaks the law or the Google Play Developer Policies.
- Remove or alter any copyright, trademark, or other proprietary notices.
We retain all intellectual property rights in the app and its underlying code, design, and content.
4. Your data
Rapid Invoice stores your data only on your device. We do not operate servers that hold your business records. See the Privacy Policy for full detail.
You are responsible for backing up your data. The app provides a full backup-to-ZIP feature; we recommend you make regular backups and save them somewhere safe (cloud drive, computer, another device). If your device is lost, damaged, or wiped and you have no backup, we cannot recover your data because we never receive it.
5. Purchase, refunds, and Google Play
The app is sold as a one-off purchase through Google Play. There is no subscription and no recurring charge.
Purchases, refunds, and chargebacks are handled by Google Play under Google's own terms and refund policy (https://support.google.com/googleplay/answer/2479637). We do not process or hold your payment information.
If you believe you are entitled to a refund, please request it through Google Play in the first instance. We can sometimes assist, but the final decision on refunds is Google's.
6. Updates, compatibility, and ongoing support
6.1 Updates
We may release updates to fix bugs, improve performance, comply with legal or platform requirements, or add features. Google Play handles update delivery. We do not guarantee that any specific feature will remain in the app indefinitely.
If a significant change to functionality or to these Terms is needed, we will update the "Last updated" date at the top of this document and, where appropriate, notify you via the Play Store listing or in-app.
6.2 One-off purchase — what your payment covers
You purchased a one-off licence to use the version of Rapid Invoice available on Google Play at the time of purchase. Your payment is not a subscription. It does not entitle you to ongoing development, new features, or perpetual compatibility updates for future versions of Android, future Google Play policies, or future hardware.
In particular:
- We may, but are not obliged, to release updates to maintain compatibility with Android versions, Google Play policies, or device hardware released after the date of your purchase. If we choose not to, the app may at some future point stop running, or stop running correctly, on your device.
- The app is sold as-is for the Android versions and devices it supports at the point of purchase. We do not warrant that it will continue to work on Android versions or devices released after that point.
- If we discontinue the app or stop supporting it on a given platform version, we will, where reasonably practicable, give notice via the Play Store listing and provide a final release that lets you export your data via the existing backup feature.
This clarification reflects the one-off purchase model: because there is no recurring payment, there is no recurring obligation on our side to provide continued support.
6.3 Relationship to your statutory rights
Nothing in §6.2 affects your statutory rights under the Consumer Rights Act 2015, including any right to receive updates that are necessary to keep the app in conformity with what was described at the point of purchase, for a reasonable period appropriate to the type and price of the app. Section 6.2 is about new platform versions released after your purchase, not about the state of the app at the point of sale.
If you believe the app has stopped working in a way that affects conformity with what was described when you bought it, please contact us at the address in §13 before raising a claim with Google Play — we may be able to resolve the issue directly.
7. Third-party fonts and licences
The app bundles the following font families, each licensed under the SIL Open Font License, Version 1.1 (OFL):
- Open Sans — primary text in generated PDFs.
- Noto Sans — PDF fallback for extended characters and symbols.
- Bodoni Moda, Hanken Grotesk, and Spline Sans Mono — the app interface.
The full font licence text, together with the licences of the open-source software components the app uses, is viewable in the app at Settings → About → Open-source licences. We have not modified the fonts; their use within Rapid Invoice complies with the OFL.
8. Acceptable use
You agree not to use the app to:
- Create or distribute documents that are fraudulent, misleading, or unlawful.
- Misrepresent another business's identity.
- Send invoices for goods or services you have not provided or are not entitled to invoice for.
- Breach any applicable law, including UK tax law, consumer protection law, or data protection law.
How you use the documents the app produces is your responsibility.
9. Limitation of liability
Nothing in these Terms limits liability that cannot be limited by law. In particular, we do not exclude or limit liability for death or personal injury caused by our negligence, fraud or fraudulent misrepresentation, or any other liability that cannot lawfully be limited.
Subject to that, to the maximum extent permitted by law:
- The app is provided "as is" and "as available". We do not warrant that it will be uninterrupted, error-free, or fit for any particular purpose.
- We are not liable for any business loss, lost profits, lost revenue, lost data, or indirect or consequential loss arising out of your use of, or inability to use, the app.
- Where we are liable for direct loss, our total aggregate liability to you (whether in contract, tort including negligence, or otherwise) is limited to the amount you paid for the app on Google Play in the twelve months preceding the event giving rise to the liability.
You are responsible for the accuracy of your records and the suitability of the documents the app produces. Mistakes in figures, labels, VAT, CIS, or any other content remain your responsibility.
10. Your statutory rights as a consumer
If you are a consumer (i.e. you bought the app for purposes outside your trade, business, craft, or profession), nothing in these Terms affects your statutory rights under the Consumer Rights Act 2015 or other UK consumer protection law. In particular, the app is expected to be of satisfactory quality, fit for purpose, and as described. If it is not, you may have a right to a repair, replacement, or refund under that Act, on top of any rights you have via Google Play.
Most users of Rapid Invoice will be using it for their trade or business, in which case the Consumer Rights Act does not apply and the relationship is a B2B one — but the wording above is included to ensure no consumer who happens to buy the app loses statutory protection.
11. Termination
You may stop using the app at any time by uninstalling it. You can also delete all of your data through the app's settings before uninstalling.
We may terminate or suspend your licence if you materially breach these Terms (for example, by attempting to redistribute the app). In that case, you must stop using the app, and you may request a refund through Google Play subject to Google's refund policy.
12. Governing law and jurisdiction
These Terms are governed by the laws of England and Wales.
If you are a consumer, you may bring legal proceedings in the courts of the country in which you live (or in England and Wales). If you are using the app for business purposes, you and we agree that the courts of England and Wales have exclusive jurisdiction.
13. Contact
For questions about these Terms:
- Email: info@rapidinvoice.co.uk
By installing or using Rapid Invoice, you confirm that you have read and agree to these Terms of Use and the Privacy Policy.