VIABUILD vs JACK App

JACK App is published by JACK App Pty Ltd, an Australian company based in Mile End, South Australia. Its own “Who is JACK” page says the product started as a tool for founder Dan's residential building company in South Australia, and that it is now used by builders across Australia and North America. The vendor describes it as a cloud-based, all-in-one construction management platform for builders and tradies, combining CRM, estimating, job management, client portals and finance tools.

Every JACK App fact on this page was read from jackapp.io, app.jackapp.io, or JACK App's own listing on the Xero App Store (apps.xero.com/au/app/jack-app) on 5 November 2026. The vendor's public pricing page is geo-targeted (a request from outside Australia showed a different currency and figures), so Australian prices below come from the vendor's own Terms of Service for Australia and New Zealand, effective 2 October 2026. The same headlines appear on the Xero listing, stated exclusive of tax. Confirm current details, including the tax basis, with the vendor before you treat any figure as a quote.

The overlap is real. JACK App publishes digital takeoffs and quotes, converting an estimate into a job, progress claims, variations, purchase orders, a 12-month cashflow forecast, client and subcontractor portals, timesheets with Xero payroll integration, job scheduling including a Gantt and planner, AI-powered bill processing, actual versus budget job financials, and site safety. VIABUILD is built around the money trail of a fixed-price residential build: the estimate becomes the job budget, purchase orders are raised from its lines, supplier invoices are checked against those orders, and stages plus approved variations become the next progress claim through to Xero.

What VIABUILD does, specifically

VIABUILD is the Construction Operating System for Australian residential builders. Digital takeoff and estimating flow through to budgets and purchase orders: the estimate becomes the job budget, and purchase orders are raised from its lines. Upload a supplier invoice and Oryn™ reads it and fills in the lines for you to check against the purchase order and approve. Stages plus approved variations become the next progress claim. Client selections carry their prime cost or provisional sum allowance, and site safety (QR site sign-in, SWMS, inductions and toolbox talks) sits in the same system.

VIABUILD connects to Xero, which stays your accounting system. Approved bills and progress claims push to Xero with tracking categories applied, and approved variations travel as a line on the progress-claim invoice rather than as separate documents.

What VIABUILD is not

VIABUILD does not run payroll and does not cost labour hours to jobs from timesheets. It does not have a native iPhone or Android app today: supervisors use ViaSite on their phone for diaries, photos, defects and safety checks. If crew timesheets are the heart of your week, that is a real gap, and it is a capability JACK App names on its own site.

These two sit in the same shortlist for an Australian residential builder, so the decision is worth stating as conditions. JACK App is a serious local product. On several profiles it is the better buy.

Pick JACK App if

• You want timesheets in the same system as the job. JACK App names timesheets, including from a mobile device, and its Xero listing names Timesheets and Payroll Integration (Xero). Approved timesheet hours are pushed to Xero for payroll processing. VIABUILD does not cost labour hours from timesheets and does not run payroll.
• You want a CRM and portals in the same subscription. JACK App publishes client management from first enquiry, and client and subcontractor portals. Its pricing page lists contractor or supplier and client access as free.
• A lower published seat price matters most. JACK App's Australia and New Zealand terms list $349 a month for one seat. VIABUILD is $555 a month inclusive of GST with three users included. Put both on the same user count and the same tax basis before you compare, and confirm the current JACK App figure with the vendor.
• You already like how the vendor describes a builder-built tool. The product is published as having started inside a South Australian residential building company. That is a fit story, not a capability claim, and it will matter to some buyers more than any row above.

Pick VIABUILD if

• You build whole homes on fixed-price contracts. The margin on a long build is decided by the budget you lock, what you commit against it through orders, and whether the supplier invoices match those orders. That chain is what VIABUILD is built around.
• You want takeoff inside the system, feeding the budget. VIABUILD's digital takeoff flows into the estimate, the budget and the orders. JACK App also lists digital takeoffs and converting an estimate into a job. The test is whether the locked estimate becomes the cost position you run the job on.
• You want the invoice checked against the purchase order and the locked estimate budget. Oryn reads an uploaded invoice and fills in the lines for you to check against the purchase order and approve. That matching step against a locked estimate is what VIABUILD is built around.
• You want three users in the platform price. VIABUILD includes three users at $555 a month. JACK App's published base is one seat. Extra people change the comparison quickly on a per-seat model.

Both can be tried before you move the business. Run one real job through both: one estimate, one purchase order, one supplier invoice, one week of crew hours if you use them, and one progress claim through to Xero. Whichever one you had to work around is your answer.