True Building Experience
The building design platform where daylight is measured through every opening, surfaces design themselves, and one change updates the whole project — instantly.
A building design platform where what you draw is what you see — in real light, at real scale.
Truebex treats a building as one living model. The plan you draw, the surfaces you shape and the light that fills each room are the same thing — so there is nothing to export, nothing to re-render and nothing to fall out of step.
Light is measured from the sun, the sky and the openings you placed. Patterns know the walls they sit on. Details you design once update everywhere they are used.
Nine capabilities at the heart of the platform, all shipping today.
Every window and door reads the sky and sun on its far side and lets exactly that light into the room. Open a door between a bright room and a dark one, and the light follows.
How it worksSplit any wall into panels and fill them with rule-based patterns — start, end, centre, alternating. They re-flow on their own when the wall grows, shrinks or gains an opening.
How it worksSave a finished wall face as an asset and place it anywhere. Open the asset, change it, and every copy across the project updates in one step.
How it worksOffsets, links, locked dimensions and reference planes keep shapes in relationship while the walls they belong to move and resize.
An edit costs only what it changes. Moving a wall in a full building takes milliseconds — 240 ms became 4.3 ms in our benchmark — so the model never lags behind your idea.
Lighting setups and the exact view — camera, section, storey — are saved inside the project, and every lighting change can be undone like any other edit.
One command lays out plans, sections, stair sheets and schedules, with forms you fill once. Export a vector PDF with selectable text and fillable fields, or DXF.
How it worksDescribe a door, a window, a cabinet or a stair by its parameters and it builds itself, regenerates with its host, and keeps its handles and hardware in place.
Paint, wallpaper and three-dimensional patterns on walls, floors, ceilings and models, driven by the same panel system — with mouldings that stop at door jambs and follow curved walls.
Your team on one model
Several people in one project, with every change in a history you can rewind.
In progressThe model prices itself
Real products with live prices and stock, by region, so the bill of quantities updates as you draw.
In progressWorks with IFC and DWG
Exchange models and drawings with every other tool on the project.
PlannedBuilding services
Ducts, pipes and circuits that route and size themselves.
PlannedDaylight, energy, sound and wind reports
Measured results from the one true model, on demand or as you work.
PlannedOn your phone and in a headset
Panoramas rendered in the cloud, refreshed the moment anything changes, and edits from wherever you are.
PlannedAn assistant that edits the model
Ask for a window on the north wall and it appears, with the light measured and the change undoable.
PlannedArabic, right to left
The whole app in Arabic, with metric and imperial units.
PlannedFrom the first wall to a reusable, daylit design — in one session.
Lay out walls, rooms and openings. The building forms in 3D with every line.
Panel the walls and set fill rules. Patterns arrange themselves and keep up with every change.
Daylight is measured through every opening, room by room, as you design.
Save what works as an asset. Change it once and the whole project follows.
For everyone who needs to understand a building before it exists.
Judge daylight and proportion while you draw — not weeks later.
Panels, fills and finishes that adapt when the room changes.
One asset, placed across every unit, updated in one step.
References and constraints that keep relationships intact as the design evolves.
See the real light in the real room before anything is built.
Everything in Truebex follows from them.
What you see is computed from the sun, the sky and the openings you placed — not dressed up afterwards.
Relationships, dimensions and patterns hold while the design moves around them.
Every good detail becomes an asset you can place, refine and update everywhere at once.
Start free with the full modeller. Upgrade when Truebex becomes part of your daily work.
Free
no time limit
The full modeller with measured daylight and every surface tool.
£24per month
or £240 a year, billed annually
For designers who draw, light and present every day.
£99.17per month, billed annually · per seat · from 2 seats
£1,190 a year
For practices that buy a seat for each person.
Short answers about Truebex, hardware, the API and billing.
Truebex is a building design platform for Windows. You draw in plan and design in 3D at the same time, with daylight measured through every opening, surfaces that arrange themselves, and assets that update everywhere when you change them.
Each window and door measures the sky and sun outside it and lets that exact amount of light into the room. Move a window, widen a door or add a wall, and the light in every room responds — including rooms that only receive light through another room.
Patterns that understand the surface they sit on. You set the rules — what goes at the start, the end, the centre or in between — and Truebex lays them out, re-flowing them whenever the wall or its openings change.
Open any saved asset, change it, and save. Every copy placed across the project updates in a single step, so a detail is only ever designed once.
A Windows PC with a modern graphics card. An NVIDIA RTX card unlocks the highest lighting quality, including ray tracing and path tracing.
Yes. Create API keys in your dashboard and call the Truebex API with a bearer token. Every plan includes a monthly request allowance; see the developer docs.
Today Truebex exports vector PDF and DXF. IFC and DWG import and export are on the roadmap, together with sharing a project with your team.
Pro and Studio are billed monthly or annually by card, and Team annually per seat. VAT or sales tax for your country is shown before you pay and on your invoice, and you can cancel renewal at any time. Online payment is rolling out; the pricing page shows every plan and what it includes.
See a building designed, daylit and refined in one live session. Request a demo and we'll show you Truebex on a project like yours.