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Auvi Trade — Building Regs & Calculators for UK Tradespeople

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We aim to respond within 2 business days.

Frequently asked questions

Can I use Siri with Auvi Trade?

Yes. Say “Hey Siri, ask Auvi Trade” and Siri will ask what you want to know. Speak your question and Siri reads the answer back from the Approved Documents — completely hands-free. This works even when the app is not open. Siri integration requires the premium unlock.

Does Auvi Trade need an internet connection?

No. Auvi Trade works entirely offline. All reference content, calculators, and voice Q&A processing runs on your device. No internet connection is required at any time after initial download from the App Store.

Does Auvi Trade replace BS 7671?

No. Auvi Trade is a reference and calculation tool that complements your copy of BS 7671. It does not reproduce any BS 7671 text, tables, or diagrams. Calculations are derived from physics first principles and manufacturer datasheets. Users who need specific regulation text should refer to their own copy of BS 7671.

Where do the calculations come from?

All calculations are derived from physics and engineering principles: Ohm’s law, conductor resistivity, thermal limits, and cross-sectional area. Cable data comes from manufacturer datasheets (publicly available). MCB trip characteristics come from the EN 60898 product standard. No copyrighted BS 7671 tables are used.

Is the Approved Document content accurate?

Reference content is based on the current editions of the Approved Documents published by HM Government under the Open Government Licence v3.0 (Crown copyright). However, regulations can change. Always check that you are using the current edition for your work, and consult your local Building Control Body if in doubt.

Does Auvi Trade collect any data?

No. Auvi Trade collects no data whatsoever. No analytics, no tracking, no crash reports, no telemetry. Our App Store privacy label says “No Data Collected” because that is literally true. See our Privacy Policy for full details.

How does Voice Q&A work?

Voice Q&A uses Apple’s on-device speech recognition to convert your spoken question into text, then searches the Approved Document content for the most relevant answer. No audio is recorded or sent anywhere. You can also type questions instead of speaking.

Will Auvi Trade be updated for BS 7671 Amendment 4?

Yes. Amendment 4 publishes 15 April 2026 and takes effect later in 2026. Auvi Trade will be updated to reflect the new requirements, including stationary secondary batteries, functional earthing for ICT systems, Power over Ethernet, and the revised medical locations section.

Is this a subscription?

No. Auvi Trade is a one-time purchase (£14.99). You pay once and receive all features and all future updates. No recurring charges, no ads, no in-app purchases.

Can I save my calculations?

Yes. You can save calculation results locally on your device and view them later in the History tab. You can also export calculations as text to share via email, Messages, or other apps.

Does it work on iPad?

Yes. Auvi Trade runs on iPhone and iPad with iOS 17 or later.

How do I request a refund?

All purchases are processed through the Apple App Store. Refunds are handled by Apple per their refund policy. Visit reportaproblem.apple.com to request a refund.

I found an error in a calculation or reference content.

Please email us at support@creativemachines.ai with details. Accuracy is critical for safety — we take error reports very seriously and will issue a fix as quickly as possible.