The AI Job App for Plumbers (Runs on WhatsApp)

Job app built for plumbers

Plumbing runs on callouts and interruptions. A blocked drain here, a burst pipe there, a hot water system that died overnight — you're rarely in one place long enough to sit down with software. Most tools sold as a job app for plumbers want you to stop, open a dashboard, and type it all up later. offsider works differently: an AI assistant lives in WhatsApp, already open on your phone, and you run your jobs by message between callouts. See what AI for tradies does for the full picture.

Nothing to install, nothing to learn. You talk to offsider like you'd text your offsider — natural language, voice notes, photos — and it handles the admin.

Tracking jobs, sites and clients by message

When you take on new work, tell offsider where and what:

"New site — 9 River Road Preston VIC 3072, residential. Client is Robyn Mack."

offsider creates the site and links it to the client. Jobs go under the site:

"Add a job to River Rd — supply and install hot water unit, $1,850 ex-GST, assign to Dave, scheduled for Thursday."

Each job carries a name, quantity, rate (ex-GST), date, assignee and a to-do or completed status. Mark it done when the work is finished:

"Mark J4 as completed."

Because your clients and sites stay on file, the same managing agent who calls you every month for rental maintenance is already there — no re-entering details on every callout. When the same property calls again in six months, its full history is right there: what you did, what you flagged, what to watch.

Quote and invoice PDFs for variation work

When scope shifts mid-job — the hot water unit is in but the copper's corroded — you handle the extra work as a variation, confirmed with whoever approved it:

"Create a variation for River Rd — corroded pipework replacement, confirmed with Robyn."

Add jobs to the variation with their rates, then ask for the PDF:

"Generate the invoice PDF for variation V1."

offsider confirms the 20-credit cost, generates a Tax Invoice PDF with your ABN, GST calculation and line items, and sends the PDF directly to your WhatsApp. Download it from there and send it to your client however you normally would — email, text, whatever works for them. The same 20 credits cover your quote PDF and any regenerations, so you're not paying twice.

If you want a quote to get sign-off before starting the extra work:

"Generate a quote PDF for V1."

Same PDF, same single charge per variation. Set a discount or hide per-line pricing before generating if that's what the client needs. See the full toolkit on the features page.

Parts and materials on the job

Plumbing jobs chew through parts, and the easiest time to record them is the moment you pull them off the van. With offsider you do it by message from the site:

"Request a hot water unit and 4 mixer taps as materials for River Rd."

Materials are tracked per site with a status — requested, ordered, or fulfilled — so your manager knows what to chase without a phone call:

"Mark MAT3 as fulfilled." "What materials are still on request for River Rd?"

For ongoing jobs — a bathroom reno running over a fortnight, a maintenance round for a managing agent — you can check outstanding parts any time, from the site or the van.

Issues, photos and job notes

When you open up a wall or a drain and find something unexpected, log it while you're looking at it:

"Log an issue — burst pipe under kitchen sink at S3." [attach before photo]

The photo goes with the issue record automatically. When a managing agent or insurance assessor asks what you found, the before photo is already filed — you're not trawling through your camera roll from three weeks ago. Snap an after photo when the work is done and attach it the same way.

Voice notes work throughout. If your hands are dirty or full, hold the microphone and say what happened. offsider transcribes it and echoes back what it heard so you can catch any mis-transcription before it's saved.

Job notes let you record things the invoice won't capture — isolation points, what you tested, what to bring back for the return visit:

"Add a note to River Rd — isolation valve under sink is stiff, quote replacement on next visit."

That record protects you when a job comes back. Photos of the corroded valve or the water damage, filed against the site, let you show a client or property manager exactly what the situation was. For insurance work or warranty questions, having that proof already on the job saves a lot of back-and-forth.

Appointments and callout reminders

Book appointments and set reminders from the same chat:

"Book a follow-up at River Rd this Friday at 9am for 2 hours, remind me an hour before."

The reminder fires as a WhatsApp message. Appointments are internal — they live in offsider, not synced to Google Calendar or iCal — but you can check them any time:

"What appointments do I have this week?"

Works for any trade, tuned for plumbing

offsider isn't plumbing-only. Electricians, builders, tilers, HVAC techs and painters use the same workflow. The examples here are plumbing — burst pipes, hot water units, copper and fittings, callouts — but every trade runs the same loop: add the site, log jobs, track parts, capture photos, generate the PDF.

Run a mixed crew and workers see their own assigned jobs on their phone. Managers see everything across jobs and sites. Owners can pull up an activity summary any time:

"What did Dave complete this week?"

Start free — 200 credits included and run your next callout from WhatsApp. offsider is pay-as-you-go — see pricing for credit packs.

FAQ

Is this a real job app or just a chatbot?

It's a full job management assistant — sites, jobs, variations, clients, materials, issues, notes, appointments and quote/invoice PDFs — that you run through WhatsApp messages instead of a separate app or dashboard.

Can I invoice a client directly from WhatsApp?

offsider generates the PDF and sends it to your WhatsApp. From there you forward it to your client however you normally would — email, text, or hand it over on site. There's no direct-to-client email or WhatsApp delivery built in.

Can I use it for emergency and after-hours callouts?

Yes. You can log a job, capture parts, attach photos and kick off a quote or invoice PDF without waiting to get back to a desk. For a 2am burst-pipe callout, all of that happens in WhatsApp where you already are.

How much does a job app for plumbers like this cost?

offsider is pay-as-you-go on AI credits — 200 free when you sign up, then top-up packs from $10, no subscription. Each message costs 1 credit, creating a site costs 10 credits, and generating a quote or invoice PDF costs 20 credits per variation. See pricing for details.