Home design · with the physics included
Most home design apps stop at how a room looks. Tiang runs real simulations on the plan you drew — temperature, humidity, electricity and WiFi — using actual weather for your location.
Free to draw and save, always. iPhone, iPad and Mac — and Android.
Everything happens in one app, on the house you drew.
Draw
Rooms, walls, doors and windows at their real sizes, on as many floors as the house has. Switch to 3D at any moment to turn the house around, or cut it open and look inside.
Simulate
Temperature, humidity, electricity and WiFi, worked out room by room with real weather for where the house stands. Find the room that overheats in the afternoon, the corner where damp will settle, what the bill comes to, and where the signal gives out.
Compare Tiang Pro
Save a run, change the roof or move a window, and run it again. Tiang puts the two side by side and lists what changed, room by room.
Share Tiang Pro to invite · free to join
Invite someone into the same house — a partner, your builder, whoever is paying for the roof — as a viewer or an editor. They work on it from their own phone or tablet, and changes show up for both of you.
Generate Beta
Pick a house style, say how many bedrooms and floors you need, and Tiang draws a starting plan. Change anything you like, then test it like any other house.
Sync Tiang Pro
Sign in on your iPhone, iPad or Mac and your projects are already there — and on Android phones and tablets too. Use the same sign-in on each one.
iPhone · iPad · Mac with Apple silicon · Android phones and tablets
Furniture apps help you picture a room. Tiang tells you what that room will do in August.
No CAD experience needed. Most people get their first simulation in about ten minutes.
Drop rooms, drag walls to size, cut in doors and windows. Snapping keeps everything square, and the 3D view builds itself as you go. Or import a PDF or photo of a plan you already have and let Tiang trace it.
Pin the building on the map and turn it to face the right way. That one step is what lets the sun land where it really does, and pulls the right weather in.
Pick a date and hour, then run it. You get a field you can rotate, per-room numbers, a timelapse across the day, and a PDF you can hand to a builder.
Open-Meteo, for the exact coordinates you pinned. Past dates use recorded weather. Dates up to about two weeks ahead use the latest estimate. Beyond that the app uses what is typical for the season, and it tells you on screen which of the three you are looking at.
Accurate enough to compare options, which is what it is for — this wall build-up against that one, the router here against there. It is a design tool, not a certified energy assessment, and every screen shows the assumptions behind its numbers.
No. Tell it which country you are in and Tiang fills in typical wall, roof, floor and door build-ups for you — a rendered block wall under a vented roof in Jakarta, a cavity wall in Manchester, a deep timber frame in Stockholm. If you do know the details, you can edit every layer.
Drawing, editing and 3D all work with no connection. Simulations need one, because the weather and the heavier calculations come from the server.
iPhone and iPad from the App Store, Macs with Apple silicon through the same App Store app, and Android phones and tablets from Google Play. Sign in with the same account on each one and, with Tiang Pro, your projects follow you between them.
Free to download and free to draw.