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Custom Software Development

Custom software development in Sydney

Most business problems are solved by configuring something that already exists, and we will tell you when that is true. When it is not, we design and build the tool: web apps, client portals, integrations and custom AI, by the team that built our own platform.

Diagram of a custom build: customer, workflow and data feeding one custom-fit tool that produces a portal, connections and automation

Trusted by 300+ brands, locally and nationally

$100M+generated revenue
300+businesses grown
50+case studies
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What is Custom Software Development?

Custom software is a tool built around your process instead of a subscription your process bends around: a quoting app that knows your margins, a portal your clients log into, a bridge between 2 systems that refuse to talk.

We build our own products the same way, so the advice starts honest: if a $50-a-month tool solves it, the Feasibility Review says so and costs you nothing.

How it works

Scoped in weeks. Shipped in stages.

The review first, so we only build what pays. Then the smallest useful version ships early, real users break it politely, and it grows from evidence rather than a spec written in month 1.

Every stage ends with something you can use, a written note on what shipped, and the next stage priced before it starts. You always know what is actually happening.

Step 01 · Weeks 1 to 2

The Feasibility Review

The process mapped, off-the-shelf options priced honestly, and a build recommended only if it wins. We scope it with you after the review.

The Feasibility Review

What we build

Software we build when off-the-shelf falls short.

Every build has to beat the off-the-shelf alternative on the maths, not just the demo. These are the 4 where custom usually wins.

The tool your business runs on

Web apps and portals

Quoting, scheduling, job tracking, client portals: the workflow that lives in spreadsheets and someone’s head, turned into software your team and clients log into.

In practice: Client logs in, sees their job, files and invoices, and stops calling to ask.

The bridge between systems

Integrations and APIs

Is your tech and platform mix more of a salad than a system? Xero, HubSpot, POS, job systems, suppliers and legacy databases connected with reliable API architecture, so data is entered once and flows everywhere it is needed. Mrs Fields’ online ordering and Shift8 POS run through the store this way.

In practice: Invoice paid in Xero, job closed, CRM updated, review request sent.

The work nobody should do

Automation

Documents generated, reports compiled, records reconciled and handoffs triggered on their own. The admin layer of the business, running unattended.

In practice: Quote accepted, contract drafted, deposit invoiced, job scheduled.

Your data, answering

Custom AI

AI that quotes from your price book, drafts from your templates and answers from your documents, built under Q Agency on the stack behind AllNow.

In practice: Email arrives, answer drafted from your own documents, ready to approve.

Case study · Dott & Crossitt

700 title orders a month, handled by software.

Dott and Crossitt is a national conveyancing firm: 10 offices, 80-plus staff, and around 700 title searches a month that someone used to order by hand. We scoped the saving first, then built AI agents that order QLD Titles searches and QBCC pool certificates and return the files to the form, a referral channel with its own dashboard, and the client dashboard the directors run the business from.

Then we built First Review: a free AI contract reviewer trained on more than 50,000 contracts that grades a property contract's risk in minutes. D&C launched it in August 2026 as a product of their own.

Dott and Crossitt automation by Q Agency

283 hrs

of admin returned every month

700

title orders a month automated by the QLD Titles agent

2.7x

monthly transactions onboarded, late 2022 to Dec 2024, on the Q-built dashboard

4.2x

new clients a month over the same period

How one engagement compounded

  1. 2021

    Rebrand

    A franchise-ready brand for a firm about to scale.

  2. 2022

    Website and dashboard

    Webflow site, then the internal dashboard that tracked the 2.7x and 4.2x.

  3. 2023 to 2025

    Ads and content

    Google Ads run as 3 state accounts, plus SEO content and EDMs.

  4. 2025

    AI agents

    QLD Titles and QBCC agents, referral flow, 283 hours a month back.

  5. 2026

    First Review

    An AI contract reviewer D&C now offers the public.

Your free Feasibility Review

Should you build or buy?

Most software projects fail at the decision, not the code. The review settles it before a dollar is spent, and the document is yours either way.

  • The process, mapped. Where the hours go today, and what the manual version costs a year.
  • Off-the-shelf, priced. The tools that could do it and what they cost. If one wins, we say so.
  • The build, scoped. What the smallest useful version does. We scope it with you after the review.
  • The maths. Cost against hours saved and errors removed, so the decision is arithmetic.
  • Who runs it. Hosting, ownership and what happens if we part ways: you keep the code.

Sound familiar?

Does one of these sound like you?

Every one of these is a process problem wearing a software costume, and the Feasibility Review will tell you which tool, bought or built, fixes it.

  1. "The whole business runs on one spreadsheet."

  2. "We pay for five tools and still re-type everything."

  3. "Our quoting takes days. Competitors do it same-day."

  4. "The old system works, but the developer retired."

  5. "We have an idea our industry would pay for."

We build our own products

AllNow: the proof we ship software.

AllNow is the business operating system we built: live data pipelines, dashboards and AI analysis, designed, built and run in-house on the same stack we use for client work. When we scope your build, the estimate comes from a team that ships and operates its own product, not one that hands over a repo and leaves.

Client data stuck in 6 tools that never talked

THE PROBLEM

Client data stuck in 6 tools that never talked

Our own clients' data lived in Search Console, Analytics, ad platforms and CRMs. Assembling a monthly report took hours per client.

We built AllNow

THE BUILD

We built AllNow

An AI insights and automation platform that pulls every channel into one place and writes the plain-English note itself.

Run on us first

THE PROOF

Run on us first

Every Q client report now ships from AllNow. The hours we saved are the same hours the audit finds in your business.

Now it works for clients

THE POINT

Now it works for clients

AllNow dashboards come with every Q engagement, and the same team builds custom automations on your systems.

How we'd work together

A tool for the business, or a product to sell.

Both start with the same review. The difference is who pays for it at the end.

Products and ventures

For your customers

A SaaS product or tool your industry would pay for, taken from napkin to revenue: product strategy, brand and UX from the studio, build and hosting from the team behind AllNow.

  • Feasibility and market read before code
  • Brand, UX and landing pages under the same roof
  • A launchable version first, not a 2-year build
  • The marketing team next door when it ships

Best when you know the industry problem first-hand and want a partner, not a dev shop. Ideas are covered by an NDA from the first call.

Part of every build

What comes with every build.

You own the code

Everything we build is yours: source, hosting accounts and documentation. If you ever move on, nothing is held back and nothing stops working.

Designed, not just developed

Screens come from the same studio that does our brand work, so your team and your clients get software that is clear to use from day 1.

Hosted, monitored and improved

We run the platform after launch: uptime, backups, security patches and a monthly improvement cycle based on how people actually use it.

No hostage situations

  • You own the code

    In your accounts, transferable, no licence held over you.

  • Documented

    Written so any competent developer could take over tomorrow.

  • Hosted in Australia

    Australian-region cloud, monitored, patched and backed up.

  • Clean handover

    If we part ways, everything transfers in weeks, not court.

Check before you build

Answer these 5 questions anyone writes code.

Score your project. Under 4 yeses and the Feasibility Review will save you from the most expensive kind of software: the kind that gets built and not used.

Get my Feasibility Review
  1. Has someone mapped the actual process?

    Not the ideal one. The one with the workarounds, on a page. Software built on the ideal process gets ignored.

  2. Has off-the-shelf genuinely been ruled out?

    Priced and trialled, not dismissed. Custom has to beat it on maths, not pride.

  3. Is there one owner inside the business?

    A tool nobody owns internally decays within a year, however well it is built.

  4. Does the maths survive honesty?

    Hours saved and errors removed, valued conservatively, against the real cost including running it.

  5. Can it ship small first?

    If the first useful version cannot exist inside 2 months, the scope is wrong, not the team.

Who does the work

Built by the team that builds its own products.

Led by Josh. The same software developers who build and run AllNow build the client work, with design from the studio, all in-house in Sydney, nothing offshored.

HubSpot Solutions PartnerWebflow Enterprise PartnerBuilt and supported from SydneyMeet the whole team
Q Agency office, Penrith

Under the same roof

The advice comes from a business that runs on it.

AI drafts our reports, routes our enquiries and assembles our client dashboards. What we recommend for your business is what already runs in ours.

Custom software, Sydney

Custom software development for Australian businesses.

Q Agency is a custom software development company in Sydney building for businesses across Australia: bespoke web application development, client portals, API development and system integrations, business process automation, internal tools and dashboards, mobile app development where it genuinely pays, and custom AI, for trades and logistics companies, professional services firms, franchises and founders with a SaaS product idea. If you have ever caught yourself thinking "I wish there was a platform that just...", that is usually the brief.

The practice is deliberately conservative. Most business problems are best solved by software that already exists, so every engagement starts with the free Feasibility Review: the process mapped, off-the-shelf options priced honestly, and a build recommended only when it wins on arithmetic. When we do build, it ships in stages starting with the smallest useful version, it is designed by the same studio that does our brand work, and you own the code outright. We host, monitor and improve it monthly, and everything is documented so the business never depends on one developer again.

The proof is that we run our own software company inside the agency: AllNow, our AI insights platform, is designed, built and operated by the same team. The AI agents we built for Dott and Crossitt return 283 hours of admin a month across 10 offices.

Google reviews

What our clients say
on Google.

5.0

225+ 5 star reviews

GoogleVerified Google Business Profile

As seen in

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Read all reviews on Google
Olivia TolleySydney Smile Doctor
Highly recommend Q Agency. They set up the branding for our small business and managed to execute our vision perfectly. They take the time to really listen to what you are after and have excellent attention to detail. We would be lost without their team.
John JoannouManufactor Precinct
Q Agency understood the reason why we exist and as a marketing agency is helping us get the messaging across. High five to Cassandra and Michael, they and the agency really care.
Reece NeillMagnolia Kitchens
We are extremely pleased with the work done on our website. The team demonstrated professionalism and expertise throughout the process, we could not be happier with the outcome.
Luke SalibaFTP Playground
Josh and the team are very professional, friendly, and work hard to ensure you are happy and get exactly what you are after. Very happy with the website Q Agency delivered and will continue to use their five star service.
Andy Evanshumii
Consistently blown away by the speed, quality and cost-efficiency of the team at Q Agency. They have levelled up the humii website 10x since we started with them and we're stoked with the outcome.
Suzanne WalkerClear Path Accounting
I can't tell you the impact that working with Q Agency has had on my business. They don't just do marketing, they become part of your business, understanding your goals and driving real results.
Alistair Preston-JonesMountain Culture
Exceptional team to work with. We have used their services for web design, SEO and email marketing so far and the quality of work has been great and timely.
Alex ZambranoZamps Electrical
Steph has been awesome to work with on our Google Ads. Super professional, transparent, and actually delivers results. She genuinely cares about the business and always keeps me in the loop.
Alexandra SGoogle review
Q helped us upgrade our website, developing best practice UX and UI for better user journeys and to drive lead volume. They care about our results and know the right levers to pull to get us the outcomes we need.
Iain FrenchLocked On
Steph and the team at Q Agency are amazing to work with. Excellent communication and very helpful from start to finish, and delivered our project to a high standard.
Chris HowlettGoogle review
Came to Q for a Shopify refresh and they absolutely delivered. The new website is faster, cleaner, and way easier for customers to use.
Richard HengGoogle review
The head of digital at Q Agency has legitimately been the best to work with. Actively tries to grow our business and gives common sense advice rather than marketing jargon.
Mareile Osthushumii
It has been great to work with the team at Q Agency. Smooth and fast process, we love our new website.
Sophie RayGoogle review
Our paid ads are performing better than ever, and communication has been clear and proactive throughout. Highly recommend them for anyone wanting real results from their ad spend.
Holly FenwickGoogle review
The SEO team were amazing to work with and took the time to understand me and my business. I have already had great feedback about the new website and just could not be happier.
Krystle MedinaOne Stop Pallet Racking
Q Agency and Steph have been excellent to work with. Steph has been very knowledgeable, understanding and thorough in assisting with our new website build.
Rebecca Liu-BrennanDance Cirque
Could not ask for anything more from this incredible company. They come to you with innovation, commitment and consistency. Their knowledge and implementation is helping me to scale my business beyond what I ever thought would be possible.
Matthew RahnPower with Purpose
The team went above and beyond to understand our business goals and create a digital marketing strategy that truly delivered results.
Peter ChivasThe Orchard
Highly recommended, very professional.
Michael KoopmanTermina
Thanks for the dedicated and tailored work to create exactly what we were after.
Chris BartushETS IT
Michael and his team have been excellent in design and support throughout our project. They understood exactly what we wanted, and nailed it.
Chris BartushETS IT
Michael and his team have been excellent in design and support throughout our project. They understood exactly what we wanted, and nailed it.
Michael KoopmanTermina
Thanks for the dedicated and tailored work to create exactly what we were after.
Peter ChivasThe Orchard
Highly recommended, very professional.
Matthew RahnPower with Purpose
The team went above and beyond to understand our business goals and create a digital marketing strategy that truly delivered results.
Rebecca Liu-BrennanDance Cirque
Could not ask for anything more from this incredible company. They come to you with innovation, commitment and consistency. Their knowledge and implementation is helping me to scale my business beyond what I ever thought would be possible.
Krystle MedinaOne Stop Pallet Racking
Q Agency and Steph have been excellent to work with. Steph has been very knowledgeable, understanding and thorough in assisting with our new website build.
Holly FenwickGoogle review
The SEO team were amazing to work with and took the time to understand me and my business. I have already had great feedback about the new website and just could not be happier.
Sophie RayGoogle review
Our paid ads are performing better than ever, and communication has been clear and proactive throughout. Highly recommend them for anyone wanting real results from their ad spend.
Mareile Osthushumii
It has been great to work with the team at Q Agency. Smooth and fast process, we love our new website.
Richard HengGoogle review
The head of digital at Q Agency has legitimately been the best to work with. Actively tries to grow our business and gives common sense advice rather than marketing jargon.
Chris HowlettGoogle review
Came to Q for a Shopify refresh and they absolutely delivered. The new website is faster, cleaner, and way easier for customers to use.
Iain FrenchLocked On
Steph and the team at Q Agency are amazing to work with. Excellent communication and very helpful from start to finish, and delivered our project to a high standard.
Alexandra SGoogle review
Q helped us upgrade our website, developing best practice UX and UI for better user journeys and to drive lead volume. They care about our results and know the right levers to pull to get us the outcomes we need.
Alex ZambranoZamps Electrical
Steph has been awesome to work with on our Google Ads. Super professional, transparent, and actually delivers results. She genuinely cares about the business and always keeps me in the loop.
Alistair Preston-JonesMountain Culture
Exceptional team to work with. We have used their services for web design, SEO and email marketing so far and the quality of work has been great and timely.
Suzanne WalkerClear Path Accounting
I can't tell you the impact that working with Q Agency has had on my business. They don't just do marketing, they become part of your business, understanding your goals and driving real results.
Andy Evanshumii
Consistently blown away by the speed, quality and cost-efficiency of the team at Q Agency. They have levelled up the humii website 10x since we started with them and we're stoked with the outcome.
Luke SalibaFTP Playground
Josh and the team are very professional, friendly, and work hard to ensure you are happy and get exactly what you are after. Very happy with the website Q Agency delivered and will continue to use their five star service.
Reece NeillMagnolia Kitchens
We are extremely pleased with the work done on our website. The team demonstrated professionalism and expertise throughout the process, we could not be happier with the outcome.
John JoannouManufactor Precinct
Q Agency understood the reason why we exist and as a marketing agency is helping us get the messaging across. High five to Cassandra and Michael, they and the agency really care.
Olivia TolleySydney Smile Doctor
Highly recommend Q Agency. They set up the branding for our small business and managed to execute our vision perfectly. They take the time to really listen to what you are after and have excellent attention to detail. We would be lost without their team.

Faqs

Questions we get about custom software consulting.

Straight answers. If yours is not here, ask on the call.

How much does custom software cost?

It is scoped per stage after the free Feasibility Review, sized by screens, integrations and complexity. The review also prices the off-the-shelf alternative, so you compare real numbers, not a guess against a subscription.

Should we build custom software or buy off the shelf?

Buy, unless the maths says otherwise. If a configurable tool covers 80% of the need, buy it. Build when the process is your competitive edge, the integrations do not exist, or the subscriptions you glue together cost more than the tool that fits.

How long does a build take?

The smallest useful version is typically live inside 2 months, with integrations and hardening taking a first release to about 3. If a first version cannot ship in that window, we re-scope rather than start a long march.

Who owns the code?

You do. It lives in your accounts, it is documented, and it transfers cleanly if we ever part ways. We host and maintain it because that is convenient, not because you are locked in.

Can you take over software someone else built?

Yes. Rescues and takeovers are common: we audit, document and stabilise first, then maintain.

What do you build with?

Modern, boring, well-supported technology on Australian-region cloud infrastructure, chosen so any competent developer could pick it up. The stack is the same one AllNow runs on, and we avoid anything exotic enough to become a hostage situation.

Can it connect to Xero, HubSpot or our job system?

Yes, that is half of most builds. Native APIs where they exist, middleware where they do not, and the HubSpot side handled by our own HubSpot team.

Do you build mobile apps?

We build web applications that work as well on a phone as installed apps, which suits most business tools. A native app store build is recommended only when the review shows it genuinely needs one.

Can you add AI to our existing systems?

Yes. Custom AI development runs under Q Agency on the stack behind AllNow: quoting from your price book, drafting from your templates, answering from your documents, wired into the tools you already use.

How do we know what is actually happening during the build?

Stages are short and each ends with something you can use, a written note on what shipped and what did not, and the next stage priced before it starts. Nothing goes live without your approval, and hours are the floor, not the deliverable.

What happens after launch?

We host, monitor, patch and back it up, and run a monthly improve cycle from real usage. Software either gets better or gets older; the retainer exists so it is the former.

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225+ Google reviews

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