RESULTS INSECONDS

A gas testing wizard in your pocket.

Tightness Testing • Strength Testing • Purging • CP16 Reports • Updated for UP1B Edition 4

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How It Works

Step One

Calculate the installation volume

Choose the meter, installation type and operating pressure, then add each pipe section. Tivy totals the volume and classifies the job.

Step Two

Run your tests

Add your tightness test, strength test and purging inputs to calculate your results.

Step Three

Create your reports

Choose from a CP16-style report or a standard report you can send before you leave site.

Pricing

Domestic or Commercial, Tivy has the right subscription for you.

Start with two weeks free, then choose the plan that matches the gas work you carry out.

Two-week free trial

Tivy Domestic

For domestic gas engineers who want simple testing and reports without heavy commercial tooling.

Updated for UP1BEdition 4

Annual Subscription

£4.99/year

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UP1B

Included in Domestic

Tightness testing
Purging information
PDF reports
Support and updates

No card needed to start. Pick Domestic first, then switch to Commercial when your jobs need the larger workflow.

Features

Installation Volume Calculator

Add pipe sections and let Tivy total the installation volume.

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Tightness Test Calculator

Follow guided tightness workflows for new and existing installations.

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Strength Test Calculator

Run strength tests for UP1A and UP1 jobs without manual formulas.

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Purging Calculator

Get purging information for UP1, UP1A and UP1B work.

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Report Generation

Create and share a professional PDF report from site.

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Input & Output Information

See what each value means before you enter or use it.

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Built for

Commercial and domestic gas engineers who need the right workflow fast

Tivy covers tightness testing, strength testing, purging and report generation for UP1, UP1A and UP1B work.

Commercial & Domestic Gas Testing App

Tivy is a commercial & domestic gas testing app for UK engineers carrying out tightness, strength and purging workflows on site.

See the full workflow

Tightness Testing App

Use Tivy as a tightness testing app for new and existing installations, with guided inputs and report-ready outputs.

View tightness testing

UP1B Gas Testing (Edition 4)

Tivy supports UP1B tightness testing and purging for gas engineers.

Explore UP1B testing

UP1A Gas Testing

Tivy supports UP1A gas testing across tightness, strength and purging procedures, with outputs ready for reports.

Explore UP1A testing

UP1 Gas Testing

Tivy supports UP1 gas testing workflows and helps turn calculations and test results into completed commissioning records.

Explore UP1 testing

FAQ

Common questions

Yes. Download Tivy on iPhone or Android and start with a two-week free trial. No card is needed.

After your two-week trial, Tivy Commercial is £59.99/year or £8.99/month, and Tivy Domestic is £4.99/year. No card is needed to start the trial.

Not currently — but we're working on it. Get in touch if you'd like to be notified when team plans are available.

No. Tivy works fully offline once installed. An internet connection is only needed to create your account and download the app.

Yes. Tivy is designed around current gas testing and commissioning practices for UP1, UP1A and UP1B installations.

Yes. Tivy is a commercial & domestic gas testing app built for UK gas engineers carrying out tightness tests, strength tests and purging procedures on site.

Yes. Tivy includes a guided tightness testing workflow for new and existing UP1, UP1A and UP1B installations, with instant results ready for your report.

Yes. Tivy supports UP1B gas testing workflows, including the relevant tightness testing and purging procedures used during commissioning.

Yes. Tivy supports UP1A and UP1 gas testing workflows, including strength testing, tightness testing, purging checks and report generation.

Tivy helps you generate test results quickly, but final sign-offs and commissioning reports should always be completed to industry standards and follow your required compliance process.

No. Tivy gives you the results you need to make that determination — it does not pass or fail a test on your behalf. All results should be verified by a competent professional.

Just minutes. Download the app, create your account and you're ready to go — no setup or training required.

Tivy is faster, more consistent and removes the risk of calculation errors. All the maths is handled for you so you can focus on the job.

Start your two-week free trial

Download Tivy on iPhone or Android, create your account and see if it fits your site workflow.

Start free on App Store Start free on Play Store

Try Tivy free for two weeks · No card needed