For UK subbies · Launching 2026

Completion packs done before you leave site

Photos, the contractor's form, and sign-off — built into one pack and sent from your phone in five minutes. Not at 9pm on the sofa.

Free to use · No card needed

9:41● ● ●
COMPLETIONVAULT
TUE 9 JUL · 2 LIVE JOBS
+ New completion pack
2Live
5Sent
18Signed
Recent packs
Unit 4, Barratt Homes
ON SITE · 2H AGO
Live
Riverside Court, Unit 9
SENT · YESTERDAY
Sent
Kier — Level 3 MEP
ACCEPTED · MON
Signed off
Certs
Packs
Home
Firms
You
The admin tax

Every job ends with 30 minutes of paperwork

The work's done — then the second job starts. Four apps, a fiddly template, and a pack you put off until you're sat at home.

01Dig through email to find the site address and the PM's name.
02Scroll thousands of photos to find the right five.
03Fill the contractor's Excel or Word template on a phone screen.
04Attach it all and email it to the right people — again.

20–40%

of a self-employed tradesperson's working hours go on admin like this. Late packs look unprofessional — and hold up your payment.

The five-minute pack

From job done to pack sent

The whole product is built around one flow — on site, one-handed, mucky-thumb friendly.

01

Start a job

Job name, site address, contractor and scope — in about 30 seconds. Address search and saved firms do the typing.

02

Snap photos on site

The camera opens straight to this job. Every shot auto-tags against it — no scrolling the camera roll later.

03

Prepare the pack

Pull the contractor's own template, pre-filled with the job details, plus a branded PDF summary of your photos.

04

Send from your phone

Fire it off through your mail app to the right people, with every job photo attached. Mark it signed off when accepted.

What's in the box

Everything the job needs. Nothing it doesn't.

No quoting engine, no CRM, no customer signatures. Just the paperwork a subby actually has to send.

Completion packs

Photos, the contractor's form and a sign-off summary — bundled and sent in one go, straight from site.

Cert Vault

Every ticket in your pocket — CSCS, ECS, IPAF, UKATA, PASMA and more. Card, certificate or digital pass, with expiry, ready at the gate.

Expiry reminders

A push at 30, 7 and 1 days before any card runs out. Never get turned away from a site again.

Smart templates

Map the contractor's own Excel once. Every pack fills it in — formulas, formatting and logo preserved byte-for-byte.

Built for the site

High-contrast for direct sun or a dim riser, big tap targets for mucky thumbs, every action in the bottom thumb-zone. Made for a phone on a job, not a desk.

Locked to you

Every photo and cert is private and scoped to your account — not sitting in a public bucket somewhere.

Built for subbies, not bosses

Not another app for business owners

Tradify, ServiceM8, Jobber and the rest are built to quote homeowners, capture signatures and sync to QuickBooks. That's not your job.

Your customer

The main contractor's project manager — not a homeowner. You're on day rate or piece work, so there's nothing to quote.

Your paperwork

You fill the contractor's template, not your own. CompletionVault hands their form back pre-filled — theirs, exactly as they expect it.

Your day

UK-built for CIS commercial sites — the trades, the tickets and the terminology you actually use, from CSCS to snagging.

Yours, and only yours

Your work, locked down

Completion evidence and certifications are sensitive. They're treated that way from the ground up.

End-to-end encrypted

AES-256

The details you type — site names, addresses, contractor names, cert numbers — are encrypted on your phone before they're saved. The key is generated on your device and never leaves it, so even we can't read them.

Scoped to you

Row-level security means you can only ever read and write your own data. No shared buckets, no leaks.

Private photo storage

Job and cert images live in private storage — never served as public static URLs.

Time-limited access

Images load through short-lived signed links that expire, not permanent public addresses.

Ownership enforced

Database rules stop records ever being linked across accounts — your work stays yours.

Why it exists
“I built the app I wanted after one too many completion packs at 9pm on the sofa.”

CompletionVault is made by a UK engineer who got fed up watching good trades lose evenings — and look unprofessional — over paperwork that should take five minutes on site. No stock hard-hat photos. No corporate fluff. Just the tool the job's been missing.

Made in the UK · For UK sites

The deal

Free to use

CompletionVault is free — the full completion-pack workflow and your whole Cert Vault, no card, no catch. A Pro tier will follow later for those who want more.

The app
£0to use
  • Unlimited completion packs
  • Full Cert Vault + expiry reminders
  • Smart contractor templates
  • Every feature, no card needed
ProComing later
Soon
  • More power for your busiest weeks
  • Deeper template & workflow tools
  • Shaped by what early users ask for

The free app stays free — Pro is just extra for those who want it.

Get in early

Be first on site with it

Join the waitlist and we'll let you know the moment it's ready. Free to use, no card, and we only email when there's something real to share.

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