Skip to content
Pocket Invoice: Free Invoice makerFree Invoice Maker

Mechanical contractor business software

Keep the business side of complex installations understandable. Pocket Invoice brings equipment, labor, project documents and customer balances together for mechanical contractors moving between installation, commissioning and maintenance work.

Available on Web, iPhone and Android

Pocket Invoice — Professional invoices
Pocket Invoice — Estimates and quotes

Everyday tools, working together

Prepare the documents, keep customer records close and understand the money behind the work.

Pocket Invoice — Professional invoices

Professional invoices

Present your work clearly and keep invoice and payment records in one account.

Explore in the Web app
Pocket Invoice — Estimates and quotes

Estimates and quotes

Give customers a considered proposal. Approved details can continue into an invoice.

Explore in the Web app
Pocket Invoice — Project records

Project records

Bring customer details, documents and expenses together for the relevant job.

Explore in the Web app
Pocket Invoice — Business does not wait until you get back to the office. — Web
Pocket Invoice — Business does not wait until you get back to the office. — iPhone

Business does not wait until you get back to the office.

Use the phone app for the document a customer needs today, then the Web workspace for a broader review. Choose the device that suits the moment while keeping business records with the same account.

Get started · Web login

A clearer way to manage the business

Mechanical contractor software supports the administration of equipment and building-system projects. Clear business records help connect procurement, installation and servicing without presenting an invoice app as an engineering design or commissioning system.

Explore in the Web app
Pocket Invoice — Estimates and quotes

Built around the work you actually do

Keep the customer's request, the agreed work and the payment record connected throughout the job.

Pocket Invoice — Professional invoices
Pocket Invoice — Estimates and quotes

Give each phase a clear commercial record

Describe equipment supply, installation and commissioning separately. Customers can review the agreed scope, and each billing stage can refer to the work it covers.

Explore in the Web app
Pocket Invoice — Expenses and receipts — Web
Pocket Invoice — Expenses and receipts — iPhone

Account for components and outside services

Track purchased parts, equipment hire and specialist subcontracting as expenses. Associate records with the project to understand the investment behind a contract.

Explore in the Web app
Pocket Invoice — Professional invoices
Pocket Invoice — Estimates and quotes

Keep maintenance notes with the document

Use descriptions and notes to record the equipment and service carried out. This provides context for future billing without claiming to replace technical inspection records.

Explore in the Web app
Pocket Invoice — Available on Web, iPhone and Android — Web
Pocket Invoice — Available on Web, iPhone and Android — iPhone

Handle business documents wherever the work is

Prepare estimates and invoices from a phone or manage several accounts in the Web workspace. Reuse saved clients and items to reduce repetitive document preparation.

Explore in the Web app

Professional work deserves professional documents

Show customers a clear proposal with your own details and a real document design. These examples are generated by Pocket Invoice using fictional business data.

Prepared for the next enquiry

Saved clients and items give new documents a useful starting point.

Calculated totals

Document amounts follow the quantities and rates you enter.

Consistent presentation

Choose a PDF design and use your own business information.

From estimate to invoice

Continue with approved details without entering the same work again.

Mechanical contracting — Generated by Pocket Invoice · Demonstration document
Generated by Pocket Invoice · Demonstration document

Read feedback from real app users

Visit the app stores to read users' own experiences.

Look beyond the invoice total

Equipment-heavy projects can involve substantial spending before the final payment arrives. Track actual costs and payment balances separately, and use project records to review the result rather than relying on the contract value alone.

Pocket Invoice — Business reports

Less repeated work. A clearer view of the business.

Keep the commercial context alongside the work, from the customer's first request to the latest payment.

Quicker document preparation

Start with saved customer and service details, then focus on what is different about this job.

Clearer payment records

Review what has been received and what remains outstanding before following up.

More organized information

Keep the relevant documents and expenses with the customer and project.

Start with your next job.

Sign in on the Web or download the mobile app to explore documents, customers and project records.

Get started · Web login

For a range of services

Equipment installationBuilding systemsPipeworkCommissioning servicesSystem maintenanceCommercial upgrades

More than a document. A business record.

Keep the commercial context alongside the work, from the customer's first request to the latest payment.

  • Retain customer, contact and project information.
  • Associate estimates, invoices and expenses with the relevant project.
  • Review the business using the records you have actually saved.
Explore in the Web app
Pocket Invoice — Project records — Web
Pocket Invoice — Project records — iPhone

Your everyday business documents

Continue in the Web app to work with documents and records in one place.

Questions about the software

Can I distinguish equipment from installation charges?

Yes. Create separate line items for supplied equipment, components, installation and other agreed services.

Can I retain service notes on an invoice?

Yes. Use item descriptions or document notes to describe the work performed. Keep formal engineering and regulatory records in the systems required for that purpose.

Do I need to install the app?

No. You can sign in through the Web entry on this page, or download the iOS or Android app. Choose the option that fits your work.

Can I use my own branding?

Yes. Use your company information, logo and the application's available PDF design settings. Preview the document before sharing it.

Can I follow payments and outstanding balances?

Yes. Record payments against invoices and review the remaining balance. Reports reflect the business records saved in your account.

More time for the work itself.

Keep estimates, invoices and customer records organized with Pocket Invoice.

Get started · Web login