Fourteen days. No credit card. The full Windows desktop application, not a limited demonstration — and a sample project in the box, so your first run is not an empty database staring back at you.
Start the trial to receive your licence key, then install. The starter project is a separate, small download that you can import whenever you like — it is there so you can see a finished build-up before you have to write one.
Name, email and organisation. We issue a 14-day licence key by email, immediately. No credit card is taken, and nothing is charged automatically when the fourteen days are up.
Start the 14-day trialA standard Windows installer. It sets up the application and its local database; there is no server component to stand up and nothing to configure before you can open a project.
Download the installer (.msi)A small worked project you can import on first run: bulk earthworks and stormwater drainage items, priced from first principles, with the resources, crews and formulas left in place so you can pull a rate apart and see how it was assembled.
Download the sample project (.tx1)Read how the software builds a rate before you download anything. The estimating guide is nine chapters, free, and asks for nothing.
Read the estimating guideTX1:Trinity runs on Windows, and only on Windows. It is a WPF/.NET desktop application, so there is no macOS build, no Linux build, no browser version and no tablet app. If your estimating team is on Macs, this is not the product for you and we would rather you found that out here than after a download.
It is also genuinely local. The database is a SQLite file on your own disk, so the application does not need a connection to open a project, recalculate an estimate or produce a report. A connection is needed only to activate a licence and to fetch updates.
| Requirement | Minimum | Recommended |
|---|---|---|
| Operating system | Windows 10 (64-bit), version 1809 or later | Windows 11 (64-bit) |
| Runtime | .NET desktop runtime — installed for you if it is missing | Same, kept current through Windows Update |
| Memory | 4 GB RAM | 8 GB RAM or more for large libraries |
| Disk | 500 MB for the application | Plus room for your databases — a 1,852-item library packages to about 19 MB |
| Display | 1366 × 768 | 1920 × 1080 or wider — the build-up grids reward width |
| Connection | Needed for licence activation and updates only | Everything else works offline |
| Permissions | Ability to install a Windows application on the machine | Talk to IT first if your organisation uses AppLocker or WDAC |
The single thing to take from this page: TX1:Trinity is a Windows desktop application with a local database, so before you spend fourteen days evaluating it, check that the machines your estimators actually use can run it.
A trial that hides the interesting parts tells you nothing. This one is the full desktop application, so you can build something real in it and judge the result rather than the demonstration.
Counted from activation, not from download. No credit card is taken, and no charge is made at the end of it. (The EULA currently says seven days — a known defect being corrected. The server issues fourteen.)
Anything you build during the trial stays in your local database. Converting to a paid licence does not ask you to start again.
The Earthworks & Drainage starter pack gives you priced items, resources and formulas on day one, instead of an empty database and a blank build-up sheet.
Import the starter pack, open a priced item, and open its build-up. You will see the crew, the production rate, the material quantities and the formulas that produced the rate — and you will be able to change one resource and watch the change propagate to every item that uses it.
Then do the useful test: price one item you already know the answer to. If the build-up lands near your number, you have learnt the software works the way you do. If it lands somewhere else, you have learnt something more interesting, which is where your own rate came from.
No. The trial takes a name, an email address and an organisation, and nothing else. There is no card on file, so there is nothing to cancel if you decide against it.
No, and there is no browser version either. TX1:Trinity is a WPF/.NET Windows desktop application. Running it on a Mac means running Windows on that Mac, through Parallels or similar, which some users do successfully but which we do not support as a configuration.
In a SQLite database file on your own machine. Nothing is uploaded. If you want to move a project or a library somewhere else, you export it deliberately as a .tx1 package, which is compressed, checksum-validated and can be AES-256 encrypted.
A small worked earthworks and drainage project — bulk excavation and stormwater items priced from first principles, with the underlying resources, crews and formulas intact so that the build-ups can be taken apart and reused.
The application stops opening projects until a licence is applied. Your database stays exactly where it is, untouched. See licensing when you are ready, or email us if you need longer to finish an evaluation.
Fourteen days, no credit card, and a worked project waiting in the box.