Field-first software for every service crew

Built for the mud.
Perfected for the ledger.

Stop chasing paper timecards, fighting over missing change orders, and losing weekends to messy bookkeeping. Seastack bridges the gap between raw field operations and bulletproof financial clarity.

Offline-first — works with zero signal GPS geofenced time Free to start, no contract
Built for Mechanical Plumbing HVAC Electrical Cleaning Home care Landscaping + more

Our story — the banker & the plumber

Two worlds that should never have been this far apart.

01 · The trade

For over a decade, our co-founder Benneth ran complex plumbing and mechanical installations on active commercial construction sites across British Columbia. He was a master of his trade — but his truck dashboard was a graveyard of crumpled receipts, coffee-stained timecards, and unsigned field change orders.

"Our trades men and women shouldn't have to fight clunky spreadsheets or lose hard-earned profits just because they're wearing gloves in a trench."— Benneth's wife & co-founder, a management & economics graduate
02 · The ledger

His wife — a management & economics graduate with a sharp head for numbers and the financial side of a business — watched him lose evening after evening, weekend after weekend, to that administrative nightmare. She looked at the clunky tracking "systems" the whole industry runs on, and said: enough.

03 · Seastack

Together they fused boots-on-the-ground field experience with a sharp financial mind and built Seastack — a rugged, simple tool designed to make the field crew's life easy in the mud, while delivering instant, audit-ready operational intelligence to the back office.

One platform — field to ledger

Everything the crew needs, wired straight to the books

An offline-first app proven in a trench, not a boardroom. The crew clocks in, signs off on safety, and logs the work — the office gets job costing, tax-ready invoices, and clean books, automatically.

The dead-zone clock

GPS-geofenced clock-in from a concrete parkade or a remote trench — fully offline, auto-syncing the second a signal returns. A live on-site distance check, a real start/end break clock, and one-tap job switching keep every hour honest. No double-billing, no missed time.

Safety, signed on glass

Finger-sign the morning FLHA and toolbox talks in seconds, before tools hit the floor — then log incidents to a real register with recordable-rate tracking. Keep inspectors happy and the GC compliant, no clipboards in the mud. More on FLHA →

Bulletproof change orders

Oral directive on site? Snap a photo, mark it up on the glass, and capture an instant digital sign-off. Stalled-work flags escalate it to the office — so you get paid for every single extra hour instead of eating it.

Field captures, office controls the money

Crews raise work orders and material requests with zero prices on their screen. The office prices them, converts work orders to invoices and material requests to purchase orders, and auto-books the expense — rates and margins never leave the back office.

Invoicing built for the trades

Tax done right — GST + PST on separate lines, by province. Recurring invoices, partial-payment tracking with full history, and live job costing that shows labour margin per job the moment a shift is logged.

Installs like a native app

Add Seastack to any phone's home screen — iPhone or Android — and it runs full-screen and offline, just like an installed app. Sign in with email or one-tap Google. (A dedicated Android release on Google Play is on the way.)

See it in action

One job, two views — field and office

The crew gets a big-button app that works with zero signal. The office gets tax-ready invoices and live job margin. Rates and costs never reach the field.

📱 In the field

Glove-friendly and offline-first. Every hour is GPS-verified; every FLHA is a timestamped record.

💻 In the office

GST & PST split by province, partial-payment tracking, and labour margin the moment a shift is logged.

Not just trades — any field-service crew

Pick your industry. The app fits it.

Seastack was forged in the trades and now runs any team-based, visit-based service business. Choose your industry on setup and the app instantly speaks your language — your roles, your services, your paperwork — with recurring visit schedules, on-site checklists and tax-ready invoicing built in.

👷

Trades & construction

Plumbing, HVAC, electrical, mechanical & GC crews — the home Seastack was built for.

🧼

Cleaning & janitorial

Recurring cleaning routes, on-site checklists and honest crew time — priced and invoiced automatically.

🩺

Home care & field visits

Scheduled care visits with GPS check-in, care checklists and caregiver hours & pay handled end to end.

🌿

Landscaping & lawn care

Seasonal service routes, crews, materials and billing — from spring cleanup to snow removal.

📦

Deliveries & logistics

Dispatch runs, proof-of-delivery photos & signatures, and driver time — all in one place.

…and any service crew

Pest control, pool, security, moving, catering, pet care — if you schedule people to a site, it fits.

Two ways to run your back office

Run it yourself — or hand it off

The same field-tough platform underneath. You choose how much of the books you ever want to touch.

Track A

Run it yourself

A clean, multi-tenant PWA you install on any phone — fast over bad cellular, fully functional offline.

  • Solo / Crew / Business plans with feature gates that scale as your crew grows.
  • Strict role isolation — field crews never see rates, costs, or margins. Enforced at the database, not just hidden in the UI.
  • Geofenced time, FLHA safety, and change orders flow straight into job costing.
  • Free to start. No card, no contract.
See the plans →
Track B

Hand it off

Give your financial ledger to trade-specialized professionals who actually speak your books.

  • Bookkeepers who understand progressive draws, holdbacks, and mechanical cost-accounting.
  • Your field data feeds straight into clean, audit-ready books — no double entry.
  • Instant operational intelligence for the back office, without the back-office headache.
  • You stay in the field. We keep the ledger balanced.
Done-for-you bookkeeping →

Peace of mind

No risk. No lock-in. No surprises.

Start free, keep your data, and know your crew only ever sees what they should. These are the guarantees that make Seastack safe to adopt today — not someday.

Role isolation, at the database

Field crews never see rates, costs, or margins. It's enforced by database row-level security — not just hidden in the interface.

Works with zero signal

An offline-first app. Clock-ins, photos and captures save on the device in a dead zone and sync the second signal returns.

Tax done right

GST and PST on separate lines, by province — the way Canadian trades actually invoice. No spreadsheet gymnastics at quarter-end.

Free to start

The Solo plan is genuinely free — no credit card, no contract, no trial clock. Add a paid plan only when your crew grows.

Your data, your control

Export invoices, time and payroll to CSV whenever you like. Your books are yours — there's no lock-in holding them hostage.

Built by a working contractor

Forged on active commercial jobsites in BC, not in a boardroom — by a tradesman and a numbers mind who lived the problem.

Get out of the truck-dashboard chaos.

Create your account free in about a minute — no card, no contract.

Prefer we keep the books for you? See done-for-you →