Every hour logged is provable.
Every invoice is defensible.
Site to Invoice. With Precision.
HolGrig turns a day's work — logged on site, against a rate card, with a location and a timestamp — into a CIS and VAT-correct invoice a client can't credibly dispute. Crew logging, review, day-rate pay, and materials tracking all feed the same paper trail. Nothing is re-typed. Nothing quietly changes after the fact.
Plans from a month for your whole company, by how many crews you run.
A crew’s day, from the van to a paid invoice.
Recorded in HolGrig itself, on a demo company. No sound needed: the captions tell the story.
What the video shows
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Real screens, from a running org — not mockups.
Screenshots straight from a live HolGrig instance, in the dark theme the app itself offers: the admin dashboard, and the Grid Reference tool behind every entry's location evidence.
The paper trail is the product.
Most disputes over hours and materials don't come from bad work — they come from a record that can't stand up to "prove it." HolGrig is built so it always can.
Evidence, not memory
Every entry carries a grid reference and timestamp captured at the moment of logging — not typed from memory back at the office.
One review step
Work is checked once, against the day's target, by an admin — not re-keyed through a chain of edited spreadsheets.
Invoices that don't drift
Editing work or rates later never rewrites an invoice that's already gone out. It only changes if an admin rebuilds it before it's paid, with a reason, and the original stays on file.
Not just invoicing — the whole job, end to end.
HolGrig runs a subcontractor business's field operations, not just its billing — six pieces feeding one shared record.
Field logging with GPS evidence
A crew logs work from a phone against the job's rate card. A grid reference and timestamp are captured automatically, at the moment of logging — not typed from memory back at the office.
One review step, not a spreadsheet chain
An admin checks each day's entries against the target and approves them once — no re-keying through a chain of edited spreadsheets before anything reaches an invoice.
CIS and VAT invoicing, done properly
Construction Industry Scheme deductions and the domestic reverse charge are calculated as part of raising the invoice, not bolted onto a generic template afterwards.
Day-rate crew pay, tracked individually
Pay and working-hours overrides belong to each worker, not a lump sum split across a team — clocked time, overtime, and pay run separately from client invoicing.
Materials and stock tracking
Materials used on a job are logged and billed alongside labour, with your own general stock tracked separately from what's charged to a client.
Role-based access for everyone involved
A crew sees its own work. Office staff see what they need to run the business. A client, if given access, sees only its own contracts — nothing else on the platform, ever.
A new client to their first invoice in minutes.
We timed it in the app: adding the client, its rate card and prices, a crew login, logging the work, reviewing it and issuing the invoice. See what that could mean for your office.
From the people running on it.
Built inside a real subcontractor business, not around one.
HolGrig started as internal software for Grigwells, a working UK subcontractor business — before it was ever offered to anyone else. Every workflow here (the rate cards, the review step, the CIS calculation, the day-rate pay) reflects what an actual crew, office, and set of clients needed day to day, not a generic template built for no one in particular.
Grigwells is HolGrig's first customer, and still runs on it every day. Ask us and we'll tell you plainly whether it fits your setup.
Straight answers, before you ask
Is HolGrig built specifically for CIS subcontractors?
Yes. CIS deductions and the domestic reverse charge are calculated as part of raising an invoice — built for UK time-and-materials subcontractors specifically, not adapted from generic invoicing software.
Does HolGrig track more than just hours?
Yes — materials and stock used per job, and day-rate pay for individual crew members, separate from client invoicing.
How is crew time logged and verified?
From a phone, against the job's rate card, with a grid reference and timestamp captured automatically at the moment of logging.
What does a client see if they're given access?
Only their own contracts and invoices — role-based access means nobody sees another client's data.
Built for subcontractors who are tired of chasing their own paperwork.
About 30 minutes, on a working demo company. We'll tell you plainly whether it fits.
Book a free demo