Invoicing built for heating engineers
From boiler repairs to full installations — send professional invoices and estimates straight from your phone. No office needed.
Why heating engineers love AllSquare
Invoice between callouts
Create invoices in minutes between jobs. Stop letting paperwork pile up at the end of the week.
Track every job
See all your invoices in one place — paid, pending, and overdue. Know exactly where your money stands.
Professional estimates
Send detailed estimates for repairs and installations. Convert to invoice with one tap when approved.
Everything you need to get paid
Professional invoicing tools designed for your workflow.
Works offline
Create invoices in basements, lofts, or anywhere with poor signal. Syncs when you reconnect.
Saved price list
Save your common parts and labour rates. Build invoices quickly without retyping every time.
VAT support
VAT automatically calculated and shown on every invoice. CIS-ready for subcontractors.
Client management
Keep all your customer details in one place. See their full invoice history at a glance.
Simple, transparent pricing
Start free, upgrade when you need. No hidden fees, cancel anytime.
Free
Everything you need to get started
Free forever
- Invoices2 per month
- Estimates2 per month
- AI Credits10 / month
- ClientsUnlimited
- Price List
- PDF Export
- Cloud Sync
- Custom Branding
AllSquare Pro
Full access, cancel anytime
Unlimited invoices, estimates & AI
- InvoicesUnlimited
- EstimatesUnlimited
- AI Credits100 / month
- ClientsUnlimited
- Price List
- PDF Export
- Cloud Sync
- Custom Branding
- Priority Support
Less admin, more callouts
Join heating engineers using AllSquare to handle invoicing in minutes, not hours.