Invercargill · Bluff · Southland
Custom software & business-aware websites for Invercargill & Southland businesses.
Invercargill is Southland's only city — roughly half the region's 102,000 people — and its economy runs on goods: dairy at Fonterra Edendale, red meat through Alliance Group, and aluminium at Tiwai Point, now secured to 2044 under Rio Tinto's 20-year power deal. On top of that sits an unusual forward signal: Datagrid's consented $5.1B Makarewa AI datacentre, set to become NZ's second-largest power user. Yet the local web market is saturated with marketing-first and template shops, empty at the layer that actually matters here. Tally Digital builds what they can't: custom web apps, quoting and job-management tools, tourism booking and OTA integrations, real Xero and supplier API work, and shipped AI — hand-coded by one senior New Zealand engineer for the Southland firms that have outgrown a brochure site and need software that does the work, not just describes it.
NZ-based · NZD · GST-registered · you own the code
Who it’s for
Built for the businesses that run Invercargill.
Agri-business, engineering & manufacturing
Southland's densest cluster of cash-generating owner-operators — the likes of Advanced Engineering, Southland Farm Machinery and JKs Engineering, plus the Fonterra Edendale and Alliance Group supplier ecosystems — needs custom quoting, inventory and job-management web apps that replace spreadsheets, not another brochure site.
Tourism & experience operators
As the gateway to Stewart Island/Rakiura, Fiordland and the Catlins, operators like Real NZ's Stewart Island Experience ferry and Rakiura guiding outfits need direct-booking, availability and OTA/channel integrations that cut commission — high-value recurring software work template shops handle poorly.
Hospitality & events
The Invercargill Licensing Trust runs 24 venues including hotels and conference space, and events like the Bluff Oyster & Food Festival draw seasonal demand. These need ticketing, table and room booking, payments and membership systems wired into real back-office workflows, not disconnected plugins.
Retail & e-commerce
Post-redevelopment, the Invercargill Central retail cluster and regional brands — H&J Smith's successors, Southland merino and artisan food producers — need Shopify builds with custom app logic, POS-to-online inventory sync and correct GST/NZD handling most template builds get wrong.
Professional & financial services
Accountants, law firms, real-estate agencies and construction franchises like Jennian Homes Southland, plus the SBS Bank adviser ecosystem headquartered on Don St, need client portals, workflow automation, Xero and CRM integrations, and AI-driven enquiry triage — capability well beyond a brochure site.
Energy & datacentre supply chain
The Datagrid Makarewa AI datacentre, Contact Energy's Southland wind projects and the Tiwai/Rio Tinto contractor network will spin up logistics, trades and services suppliers needing dashboards, portals and integrations — a first-mover software position as Southland's data-and-energy build-out accelerates.
What we solve
The problems that cost you the most are the ones a template can’t reach.
Brochureware that can't transact
Most Southland SMEs run dated WordPress sites with weak Core Web Vitals and no online booking or e-commerce. Tourism operators stay OTA-dependent and retailers have no POS-to-web inventory sync — so the site describes the business but never actually does its work.
Manual quoting and job tracking
Agri-engineering and manufacturing firms run quoting, job tracking and dispatch on spreadsheets and paper, with no web app tying them together. It's the clearest custom-software gap in the region — recurring, budgeted, and completely unserved by local template shops.
No integrations or automation
Xero, CRM and supplier APIs sit disconnected, and enquiry, quote and dispatch workflows are re-keyed by hand. There's no automation layer — exactly the integration and workflow work the local 'nice website + SEO' market doesn't touch.
Zero AI-readiness
Most sites have no structured data, no enquiry triage and content never built for AI answer surfaces — so Southland firms are invisible to the assistants their customers increasingly ask. Getting AI-ready starts with clean, structured foundations, not a chatbot bolt-on.
The difference
You talk to the person who writes the code.
Most local options are marketing agencies that outsource the build, or template resellers who hand you a page and disappear after the invoice. Neither can build the software layer a growing Invercargill business actually needs.
Tally Digital is a single senior engineer. Every project is hand-coded on a modern stack, every integration is real, and the code is yours to keep. No junior hand-off, no page-builder lock-in, no “who supports this now?”.
- Custom software, not templates
- Real API & booking integrations
- Modern stack — Next.js, Sanity, Supabase, Shopify
- You own the code and the accounts
What we build
Websites that do a job — plus the software behind them.
Proof
Real software, shipped for New Zealand businesses.
Inventory platforms, member portals and custom builds for NZ clients — the same senior engineering that goes into every Invercargill project.
How it works
A clear path from brief to launch.
Brief
We map the real problem and how your systems work today — not just a page count.
Architect
A plan you can read: what gets built, which integrations, what you own at the end.
Build
Hand-coded on a modern stack (Next.js, Sanity, Supabase, Shopify) — no page-builder debt.
Launch & support
Shipped, documented and handed over. You talk to the person who wrote the code.
FAQ
Questions, answered.
- Do you work with Invercargill and wider Southland businesses?
- Yes. Tally Digital is a New Zealand software studio and works with Invercargill, Bluff and Southland businesses remotely and on-site as needed. The process is the same wherever you are: clear scope, direct communication with the engineer who writes the code, and software you fully own. Distance from Southland is not a barrier — it never has been for well-run remote delivery.
- Can you build a direct-booking system for a Southland tourism operator?
- Yes. For operators serving Stewart Island, Fiordland and the Catlins, I build direct-booking and ticketing with real-time availability, payments and channel or OTA integrations — so you take more bookings on your own site and pay less commission. It's a proper application wired to your back office, not an off-the-shelf widget bolted onto a template.
- Can you connect my website and systems to Xero?
- Yes. Xero integration is core work — syncing invoices, contacts, inventory or job data so quotes, orders and jobs flow through automatically instead of being re-keyed. I build the integration properly against Xero's API for your actual workflow, rather than relying on a generic plugin that only handles the simplest case.
- What's the difference between a web designer and a web developer?
- A designer focuses on how a site looks; a developer builds what it does. Most Invercargill agencies are marketing and design-first, delivering WordPress or Shopify templates. Tally Digital is engineering-first — custom web apps, integrations, automation and AI, hand-coded by a senior developer. If your problem is a workflow or a system, you need a developer, not a template.
- How much does custom software or a web app cost?
- Every build is scoped to the specific problem, so you get a fixed price against a clear plan rather than an open-ended hourly rate. A focused job-management tool or booking system is very different from a full platform. Send the bottleneck you're trying to fix and I'll come back with scope, approach and a firm number before any work starts.
Tell me what your business has outgrown.
Tell me the bottleneck slowing your Invercargill or Southland business — the manual quoting, the OTA-dependent bookings, the systems that don't talk. I'll send back a clear plan and a fixed price, no jargon.