CodeCrackers designed, built and launched Vantro, job-management software for small UK trade businesses. It covers scheduling, quotes, invoices, a mobile app for engineers and subscription billing. Vantro went from idea to paying customers in eight weeks.
Vantro was founded by a former heating engineer who saw small UK trade businesses losing hours to paperwork. Plumbers, electricians and heating firms with two to twenty staff were juggling paper job sheets, spreadsheets and separate invoicing tools.
Existing job-management software felt too complex and too expensive for firms that size. The founder had a clear idea and a waiting list of interested businesses, but no technical team. They chose CodeCrackers to design, build and launch Vantro as a reliable SaaS product, fast.
Turn the founder's idea into a paid, reliable SaaS product in eight weeks.
Trials converting to paid plans, less admin for users and stable uptime.
The founder had a strong idea and real demand, but four connected problems stood between the idea and a launch. Each one made the others harder.
The founder knew the trade inside out but had no developers, so Vantro existed only as notes and sketches.
The idea couldn't move forward.
Every conversation with future customers added new feature ideas, so the first version risked never being finished.
There was too much to build at once.
Existing software was built for the office, but engineers need to update jobs on a phone, often with poor signal.
Engineers stuck to paper.
A waiting list of interested businesses meant Vantro had to launch fast, without cutting corners on reliability or security.
Interest would fade if the launch slipped.
What the client wanted to achieve: a simple, reliable SaaS product that small trade businesses could sign up for, use from day one and pay for monthly. It had to launch in time to win the businesses already on the waiting list.
Before writing any code, the CodeCrackers team spoke to Vantro's future customers and focused the first release on what they would pay for.
We interviewed owners and engineers from businesses on the waiting list to understand their day, from booking a job to getting paid.
We reviewed established job-management tools: what small firms liked, what they found complicated and where the pricing put them off.
We mapped three user types: business owners running the diary, office staff sending quotes and invoices, and engineers on site.
A first release that does the core jobs well wins paying customers faster than a long feature list, so we built that first.
A structured eight-week approach kept every stage transparent and on time. Select a stage to see what happened.
The CodeCrackers team worked with the founder to turn notes and sketches into a product vision. We also interviewed businesses on the waiting list about their working day.
Drag the handle to compare paper job sheets with Vantro.
Both views are illustrations: the “before” shows the old way of working, the “after” shows the new system. Client data is not shown.
Four connected workstreams, each one solving a specific part of the challenge.
CodeCrackers turned the founder's ideas into a focused MVP: jobs, scheduling, quotes and invoices done well. Every other request went onto a clear roadmap.
Engineers see today's jobs, get directions, add photos and notes and capture customer signatures on their phone. Updates sync when the signal returns.
Each business gets its own secure Vantro account with users, roles and settings. The cloud platform can grow from five customers to thousands without a rebuild.
Businesses sign up, start a free trial and move to a monthly plan without speaking to anyone. Invoices sync to their accounting software, so Vantro fits how firms already work.
Vantro on desktop and mobile, with the live schedule, the engineer app and online invoices.
Hover over a screen and scroll through the product screens.
Measured results in the first 90 days after launch.
Free-trial sign-ups that moved to a paid monthly plan.
Reported by pilot businesses for scheduling and invoicing.
Since launch, with monitoring and alerts in place.
Focusing the first release on what customers would pay for got Vantro live quickly. Engineers took to the mobile app, owners spent less time on admin, and the founder had paying customers within weeks of launch.
“I knew exactly what tradespeople needed but had no idea how to build it. CodeCrackers turned my notes into Vantro, and we launched in eight weeks. Businesses now pay for it every month, and the team still feels like my own tech department.”
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