Custom AI systems for New Zealand businesses
We saved our first client $285,000 a year. Let's find your savings.
Growthline builds custom AI systems that take over the repetitive work in your business: support, orders, stock, dispatch and marketing. Fewer paid hours on busywork, lower running costs, and your team still approves what matters.
- Order paid on any of your storesEvery brand and your wholesale store
- Pulled into the right pick queueSingle, multi, priority, wholesale or click & collect
- Older or part-sent orders checkedBefore anyone picks them
- Scan-to-packEach item checked against the order
- Label and packing slip printAutomatically, at the warehouse
What we build
One app for support, orders, stock and marketing
We build a custom app your staff log in to, connect it to the tools you already use, and put AI agents to work inside it.
Replace your Shopify apps
Paying every month for a stack of Shopify apps? We rebuild what they do as one custom app that you own. Fewer monthly fees, a faster store, and nothing breaks when an app changes its pricing or shuts down.
- Reviews
- Bundles and upsells
- Subscriptions
- Back-in-stock alerts
- Shipping rules
- Order editing
- Inventory sync
- Reporting
AI support agent
Reads every email with the customer's order, then drafts a reply or proposes a refund, credit or return label. Staff review every draft before it sends.
Website chat
Answers customers on your website in seconds, and hands over to staff when a person is needed.
Pick, pack and print
Orders from every store sorted into pick queues, scanned to pack, with labels and slips printed automatically.
Stock sync
Warehouse stock copied to every store every 2 minutes, so nothing oversells.
Stock agent and inwards
Flags what to reorder and reads supplier invoices from a photo, for a person to check.
Email writer
Turns a short brief into an on-brand email, ready to review and send.
Marketing agent
Plans and drafts social posts and ads. Off until the team switches it on.
Warehouse board
One screen on the warehouse floor showing what to pick, pack and send.
Watching agent
Checks every tool every 5 minutes and flags anything stuck or failing, most urgent first.
Case study: our first client
110 hours a week handed back to the team
The problem
Our first client is a New Zealand retailer selling across three brands and a wholesale store, all on Shopify. Support emails, picking, labels and stock counts were handled by hand across separate tools.
What we built
- An AI support agent that drafts replies for staff to approve
- Pick, pack and print, with labels and slips printing on their own
- Stock sync across every store, with reorder flags
- A watching agent that checks every tool every 5 minutes


Built to be trusted
AI that does the work, and people who stay in charge
Money needs a person
Refunds, credits and discounts have hard limits set in the code, and a person approves them.
It hands over
Anything the AI isn't sure about goes straight to a member of staff.
Proven before it goes live
New agents start in draft-only mode, and a trial run replays past tickets to test them first.
Watched and backed up
Health checks on every timed job, weekly backups and staff logins with roles.
Not ready for a call?
How much could automation save you? Find out in 2 minutes.
How it works
Start with one problem. Grow it into your whole operation.
Free automation audit
We look at how support, orders and admin flow through your week and point out the three things worth automating first.
We build the first tool
Connected to the systems you already use, tested on your real data and run in draft mode until you trust it.
We run it and add more
We monitor, fix and extend the app as your business grows, one tool at a time.
Pricing
Start free. Pay a fixed price for what you build.
Automation audit
A 20-minute call and a short list of what to automate first. No obligation.
Book an auditCustom build
fixed price, agreed before we start
- Built around your tools and process
- AI agents with approvals and limits
- Staff logins with roles
- Tested on your real data first
Ongoing running
quoted with your build
- Hosting and monitoring
- Fixes and health checks
- Weekly backups
- Small changes as you grow
Prices in NZD.
FAQ
Questions owners ask
Do I need to change my software?
No. We connect to what you already use, such as Shopify, Klaviyo, your courier and your email, and build around how you work.
Will the AI do things without asking?
Only what you allow. Anything involving money has hard limits and needs a person's approval, and anything the AI is unsure about goes to your staff.
How do I know it works before it goes live?
New agents run in draft-only mode first, and we replay your past tickets or orders through them so you can see exactly what they would have done.
What happens to my customer data?
It stays in your systems and a private database for your app. Staff sign in with their own logins and roles, and data is backed up weekly.
Do I need to be technical?
No. We build, host and maintain it. Your team just logs in and uses it.
What if something breaks?
A watching agent checks every tool every 5 minutes and flags anything stuck or failing, so we usually spot a problem before you do.
Who you'll work with
Auckland-based. You deal with us directly.


Find out what you could automate this month
Pick a time for a free 20-minute audit. You'll walk away with three practical ideas, whether you work with us or not.
Pick a time that suits you
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