Construction management,
refined for modern contractors.

DuoApp brings teams, documents, finances and site operations into one calm system. Built for UK contractors who'd rather build than chase paperwork - stay compliant, on budget, and ahead of schedule.

Request a demo See pricing
Built for the office & the boots on site
No contracts, no setup fees, onboard in days
UK‑based humans, ready to support real sites
app.duoapp.co.uk / projects Live
DuoApp project dashboard on desktop
DuoApp projects on a phone
The whole job, live Nothing slips the net
Get paid faster Invoices on autopilot
Approvals, sorted No more Friday chasing
2.4M+ Tasks completed
1,800 Projects delivered
98% Customer retention
County Plumbing M&E
Streatfields Main contractor
Laser Mechanical & Electrical M&E
Northstone Build Civils
Harbour Civils Groundworks
Meridian Group Property
County Plumbing M&E
Streatfields Main contractor
Laser Mechanical & Electrical M&E
Northstone Build Civils
Harbour Civils Groundworks
Meridian Group Property
// What's inside

Six tools. One platform.

From the office to the site to the accounts team - every workflow in construction, finally connected. No spreadsheets. No double entry. No "which version is this?"

01 / Project & Tasks

Plan, assign and track every aspect of the build

Break work into phases and tasks. Assign people. Hide tasks from those who shouldn't see them. Report site issues straight from the task. Every job has a clear owner and a clear status.

02 / Invoices

Invoices that build themselves

Generated directly from project data, with approval workflows and split billing baked in.

// 03 - Approvals

Smart approvals. Right checks, right people.

Step-by-step workflows for variations, applications and invoice sign-offs. Real-time visibility - no more "who approved this?" emails on a Friday afternoon.

  • Custom approvers per project, per task type
  • On-site users can raise variations from their phone
  • Full audit trail with timestamps, names and notes
Approvals workflow on mobile
04 / Files

One source of truth

Auto-notify everyone when drawings update. No more chasing the latest revision over WhatsApp.

05 / Permissions

Access, by role

Project-level controls. The QS sees costs. The site team sees tasks. Subbies see what they need.

06 / Timesheets

Auto-generated timesheets

Captured from real task activity. Approve and export to payroll in a single click.

01 - Project & Task Management

Every project,
at a glance.

Full visibility into all your projects and their values. Assign tasks, hide them from unassigned users, report issues directly within the task to instantly notify management.

  • Top-down visibility on every job, value, and status
  • Task-level assignment with private/public controls
  • Site-to-management issue reporting in one tap
Explore project management
Plot-level project detail on desktop
DuoApp Projects on mobile
142 LIVE TASKS
UPDATED 2s AGO
02 - Auto-Generated Invoices

From site activity to paid invoice.

Approve and decline variations to keep costs in check. Approval workflows on every project. Add automatic deductions and split invoices between users.

  • Generated directly from completed task data
  • Built-in approval workflow per project
  • Auto-deductions and multi-payee splits
See how invoicing works
Auto-generated invoice with deductions and breakdown
£42,180 THIS WEEK
7-DAY AVG TURNAROUND
04 - Integrated File Manager

Every drawing.
Every revision.

Manage all documentation in one place with automatic notifications when files are updated, so everyone works from the latest version - every time.

  • Unified file management across projects and plots
  • Real-time updates and replacements
  • Acknowledgement tracking for compliance
Inside the file manager
Integrated File Manager
REV C - 14 ACK'D
3 PENDING SIGN-OFF
// In numbers

Built into real UK projects.

Live, on-site, every day across the UK. From small refurb crews to multi-plot housebuilders running £M+ programmes.

£120M+
Invoiced through DuoApp since launch - and counting.
2.4M+
Tasks tracked, assigned and completed across UK sites.
1,800
Live and completed projects on the platform today.
// What contractors say

Built with the people who use it.

Every feature in DuoApp is shaped by real feedback from real UK contractors - the QSs, site managers, directors and admin teams who run the jobs.

We've been working with DuoApp since July 2023, moving subcontractor payments from Excel to an online platform. They've been consistent, reliable, and supportive - always delivering on their promises. The result is software that feels tailor-made for us and a partnership many would envy. We're now expanding DuoApp into other areas of our business - and we haven't looked back.
DR
Darren Riches
Director · Laser M&E
It has been instrumental in improving our business and our processes efficiencies. From streamlining our sub-contractor payment process, to offering our labour force a platform for document sharing, they've helped us and met our needs.
RM
Ricky McNiece
Commercial Manager · County Plumbing
Since using DuoApp, our sub-contractor payment processes have become a breeze. It's efficient, easy to use and looking forward to seeing how it evolves to further help our business requirements.
AB
Andrew Bryant
Commercial Director · Streatfields
LIMITED OFFER · 10% OFF FIRST 3 MONTHS

Simplify site management for everyone.

No contracts. No setup fees. Up and running in days, not months. See DuoApp on a real project before you commit.

Start free trial → Book a demo
// Get in touch

Got a question?

Tell us a bit about your business and we'll be back to you within one working day. UK-based, real humans - office hours 09:00–17:30 GMT, Mon–Fri.