For architects and students — no climate background required

Understand your building.
Like having a in your browser.

Drop your Rhino model in. ArchiTool gives you a private consulting team for every angle that matters — daylight, envelope, solar, PV, drainage, climate context, site geometry — available the moment you start a project, in plain English. Even on day one of design. No jargon, no plugins, no installs.

Try it free→See how it works

No credit card. No install. Works in any browser.

Built by architects, for architectsLEED v4.1ASHRAE 90.1ISO 6946Imports Rhino .3dmRevit · soon

Plain-language feedback

“This room is too dark.” “South façade overheats in summer.” Real sentences, not just numbers.

Personalized to your design

Suggestions reference your actual rooms, walls, and orientation — not generic best practices.

Backed by real standards

LEED v4.1, ASHRAE 90.1, and ISO 6946 are built in. Use the same numbers your consultant would.

How it works

A consultant looking over your shoulder

Most analysis tools assume you already know what sDA, ASE, or U-value mean. ArchiTool doesn't. It's built so a third-year architecture student can drop in their first model and walk away understanding their own design better.

Step 01

Reads your model for you

Drag a .3dm file in. ArchiTool figures out the rooms, the windows, and which way the building faces — no scripts, no Grasshopper, no setup.

Step 02

Shows you, not tells you

Results land as a heatmap on your floor plan, not a wall of numbers. You can see at a glance which rooms are working and which aren't.

Step 03

Suggests what to try next

“Rotate this room 15° and you'll get 30% more morning light.” “Swap this glazing and the south façade stops overheating.” Specific suggestions, not generic advice.

Step 04

Re-runs in seconds

Change the design, see the new result instantly. Iterate as fast as you sketch — the feedback loop most analysis tools never give you.

Deep analysis

Two flagship tools, backed by the AI Advisor.

These are the deep-dive tools every architect needs early in design — daylight performance and envelope heat loss. Both come with the AI Advisor (below) so you can interrogate your run in plain English. The wider toolkit follows.

Daylight Advisor

How much natural light actually reaches each room?

Drop in your Rhino model and see a colored map of your floor plan — bright areas, dim corners, and spots where the sun will cause glare. ArchiTool tells you in plain English which rooms feel gloomy, which ones overheat, and what to try: bigger windows here, shading there, a skylight in that corridor.

→ You'll learn the standards (sDA, ASE, glare) as you go — explained in tooltips, not thrown at you.

Industry terms: sDA · ASE · Glare · LEED v4.1 daylight credits

Open Daylight Advisor →

Envelope Advisor

Will my walls keep the building warm in winter and cool in summer?

Build a wall, roof, or floor by stacking materials like Lego — concrete, insulation, plaster, glass. ArchiTool instantly tells you if it's good enough for your climate, where heat is leaking, and what to swap to fix it. No formulas, no spreadsheets.

→ Climate-aware defaults pick the right targets for where you're building — temperate, hot-arid, cold, tropical.

Industry terms: U-value · Thermal mass · Condensation risk · ASHRAE 90.1 · ISO 6946

Open Envelope Advisor →

New · AI Advisor

Chat with a consultant grounded in your run.

When your daylight analysis finishes, click Ask the Advisor. It reads your actual rooms, answers in plain English, and suggests specific changes you can try — by name, with numbers from your simulation.

✓
Knows your rooms by name
"Your Bedroom is at sDA 31% — below LEED's 55% target." Real numbers, pulled from your latest run. Never made up.
✓
Explains the jargon as it goes
Ask “what is sDA?” — get one paragraph in plain English, with the LEED threshold for context. No textbook, no Googling.
✓
Suggests what to try next
"Widen the north window 30% and the Bedroom should cross LEED's threshold." Specific to your design — not generic best practice.
✓
Honest about its limits
Estimates qualitatively, but always says “re-run to confirm.” It's an advisor, not stamped engineering.

Included with ProBuilt on Claude · grounded by tool-call lookups against your run

Daylight Advisor

Pro · grounded in your latest run

Live

Which rooms are too dark?

Two rooms are below the LEED 55% sDA target: Bedroom (31%) and Study (42%). The Bedroom's north window is small for the floor area. Want me to estimate the change if you widen it 30%?

Yes — and does this pass LEED?

Checking LEED v4.1 compliance…

Widening the Bedroom window 30% should lift sDA into the 55–65% range — likely a pass. Across the project, 3 of 5 rooms currently meet LEED's threshold. Re-run to confirm the new number.

Ask about a room, glare, LEED, or what to try next…

Pull the city around your site straight from OpenStreetMap — buildings, roads, trees, terrain.

Free: geometry only, 500 m radius, 3 exports / day. Pro: full metadata + unlimited radius + clean Rhino export.

Open →

The full set lives at architool.ai/architool — sun-path, sky mask, radiation, site dashboard, viewer, and more.

Pricing

Free for students. Honest for everyone else.

Start free, forever. Students get a free educational license with full Pro features — verify your academic email and you're set. Upgrade only when you're a working professional shipping deliverables to clients.

Free

$0forever

Every tool, with sensible limits — try the whole toolkit before you decide.

✓All 7 tools accessible (with limits)
✓5 Daylight runs / month, basic U-Value library
✓Climate Dashboard, Sun Path viewer, basic PV analysis
✓OSM Downloader (geometry only, 500 m radius)
✓Watermarked exports
✓Community support

Start free

Student

Freeeducational license

Verify with .edu / academic email

Free for students with a verified academic email — full Pro features, on us.

✓Everything in Pro
✓Unlimited runs
✓Full-resolution sensor grids
✓Clean PDF + 3DM exports
✓Renews each academic year

Verify as student

Pro

$19per month

or $190 / year (save 17%)

For working architects who ship reports to clients.

✓AI Advisor chat — grounded in your run
✓Unlimited Daylight + full U-Value library
✓Sun Path, PV, and Water Flow labs
✓OSM with full metadata + Rhino export
✓Clean PDF + 3DM exports, no watermark
✓Priority email support

Upgrade to Pro

Studio

Coming soonfrom ~$49 / month

Join the waitlist

Multi-seat access for studios. Early access — tell us what you need and we'll prioritize it.

✓Everything in Pro, for the whole team — planned
✓Multiple seats with a shared workspace — planned
✓Higher AI Advisor message budget — planned
✓Branded report exports (your logo) — planned
✓Priority onboarding for early studios — today

Join the waitlist

The free educational license requires a valid academic email or proof of enrollment. Renews each academic year — let us know when you graduate and we'll keep your projects.

Need 10+ seats, SSO, or a procurement contract? Talk to us about Enterprise.

Compare

How does this compare?

The existing tools are powerful, but they assume you're already an expert and they cost like enterprise software. ArchiTool keeps the rigor and drops the friction.

Tool	Typical price	Form factor	What you also need
ArchiTool Pro	$19 / month · $190 / year	Browser, any OS	Nothing. Drag-and-drop a .3dm.
ClimateStudio (Solemma)	~$995 / year (quote-based)	Rhino plugin	Rhino license
Pollination Rhino (Ladybug Tools)	$1,375 / year + cloud credits	Rhino / Grasshopper plugin	Rhino license + simulation credits
Sefaira (SketchUp Studio)	Bundled in SketchUp Studio (~$759 / year)	SketchUp plugin	SketchUp Studio subscription
IES VE	Enterprise quote (typically $3,000+ / year)	Desktop application	Windows, training, IT setup

Competitor prices are public-list or community-cited references; current quotes may differ. ArchiTool Pro is listed pricing.

FAQ

Questions

Which tools are free, and which need Pro?

Every tool is free to try, with a clear limit per tool — that way you can sanity-check the whole toolkit before paying anything. Pro removes the limits: unlimited Daylight runs, the full U-Value material library, advanced Sun Path metrics, unlimited PV analysis, high-res Water Flow simulations, OSM with full metadata + Rhino export, and the AI Advisor chat. Watermarks come off all exports too. Students get all of Pro free with a verified academic email.

What is the AI Advisor — does it just make stuff up?

No. The Advisor is a chat panel that opens after your daylight analysis finishes. It calls read-only tools against your actual run to fetch room metrics, definitions, and LEED v4.1 compliance — every number it quotes is pulled from your simulation, not generated. If it estimates the effect of a design change, it always tells you to re-run to confirm. It's an advisor, not stamped engineering. The Advisor is a Pro feature; the calculator tools stay free.

I've never run a daylight or thermal analysis before. Will I be lost?

No. ArchiTool is built for that exact moment. You drop in a model, see a colored map of your floor plan, and read sentences like “this room is below the recommended daylight level — try a larger window facing north.” The technical terms (sDA, U-value) appear in tooltips you can hover when you're curious — but you don't need them to use the tool.

Is this only for finished designs?

The opposite — it's most useful in early concept and schematic design, when you can still change things. Use it to test “what if I rotate the building?” or “what if I add a courtyard?” while it's still cheap to change your mind.

How does the student plan work?

Free educational license. Sign up with an academic email (.edu, .ac.uk, .ac.il, or any university domain) or upload a current student ID, and you get full Pro features at no cost. The license renews each academic year — graduate and your projects come with you.

Do I need Rhino?

Rhino is the easiest input (just drop in a .3dm file), but you don't need a Rhino license to use ArchiTool. We're adding more import formats — let us know what you use.

How does this compare to ClimateStudio, Honeybee, or Sefaira?

Those are powerful tools for specialists who already know environmental analysis. ArchiTool is for the rest of us — architects and students who want fast, defensible feedback without learning a new language. For deep-physics validation studies, keep using Radiance.

Where does the computation run? Is my model uploaded?

In your browser, on your machine. Daylight ray tracing runs on your GPU. Files are not uploaded to our servers — your model never leaves your computer.

Can I cancel anytime?

Yes. Cancel any time from the Stripe customer portal. Your account stays on the free tier — your past analyses are not deleted.

Drop in a model. Get answers in a minute.

Free to start. No credit card. The fastest way to find out whether your design is doing what you think it's doing.

Try ArchiTool free →