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Grainwork is whole home AI.

AI that understands homes: how they’re built, how they change and what it takes to improve them. It starts with the phone you already own.

Get the free app Take a tour

The app is free to start on iPhone and Android. Tours need no sign-in.

A white clapboard house at dusk after rain, every window lit warm and the porch lamp on, reflected in the wet street.

In the Grainwork app today

See the room changed. Know what the repair costs.

Renovations Lite, Film a Repair and Bid Check are in the free app on iPhone and Android.

The Renovations Lite design idea for the same kitchen: sage green cabinets with brass pulls, a warm stone counter and tall stone tile.
The starting photo: a galley kitchen with pale gray cabinets, white subway tile, a white stone counter and an electric range.
From our founder’s own run of the app, with some clutter removed first.

Renovations Lite

Try the new look on a photo of your own room.

Take one photo, choose colors, tile and finishes, and see a design idea for that same room. Drag across the picture to compare.

Your first design idea is free after you sign in. More are $2.99 each on iPhone.

How Renovations Lite works

Film a Repair

Film the problem. Get a price range with the work behind it.

Say what happened as you film. The app returns a cost range and lists the hours, materials and service visit it assumed.

$510 to $655 To replace damaged door trim, including one service visit: about 3 hours of labor, 8 feet of trim and $50 of materials.

See the full estimate
From a repair at our founder’s house, April 2026. Hours and trim were estimated from the video.

Bid Check

Got a contractor’s quote? Check it before you sign.

See the quote’s total next to Grainwork’s own estimate for the same repair, with the questions worth asking.

How Bid Check works
Free
to see your quote’s total beside Grainwork’s estimate.
$9.99
for the full report, with each line read and the questions to ask. On iPhone.

Get the Grainwork app. It’s free to start.

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Scan to get the app
Download on theApp Store Get it onGoogle Play

Free to start on iPhone and Android, in the US. Android purchases are coming.

For the people who work on homes

Real estate agents first. Then contractors and inspectors.

The same understanding of the home, shaped for each job.

Grainwork ProfessionalsPilot · founding price live

Every inspection finding, priced where it can be.

Drop in a buyer’s inspection report, pick the findings that matter and send your client a clean page with your note and a planning cost range wherever Grainwork can price one.

Grainwork for agents
$99
per agent, per month
$299
a month for a team of up to 10 agents

Founding price for the first 10 accounts. Our first team’s free pilot started October 12, 2026; no team pays yet.

  1. Drop in the report.

    Grainwork reads every page and lists the findings, each with its page.

  2. Pick what matters.

    The inspector’s words and ratings stay as written. You add your note.

  3. Send a clean page.

    Your client opens a private link with your team’s name on it.

For contractorsPilot

Every price on the estimate says where it came from.

Grainwork Contractors turns site photos and notes into a repair or remodel estimate you check and send. Free during the pilot, then $39 per job, no subscription.

Grainwork for contractors

For inspection firmsIn preparation

Answer “what will that cost?” without a number in your report.

The Repair Cost Addendum is a separate Grainwork document with planning ranges beside your findings. It’s built, and no firm uses it yet.

Grainwork for inspection firms

Research · Atlas

A minute of phone video becomes a model of the room.

Atlas turns ordinary iPhone video into a model of the room: walls, doorways, counters, the island and the table. No LiDAR, no tape measure, no tapping corners. Our plan: with your permission, captures will help train a home model that understands homes in general, not just one house.

See Atlas in the investor tour

Atlas solving the kitchen: the camera’s path traced across the floor, with walls, counters, the island and the table rising from the solve.
Real Atlas output from a kitchen walkthrough, October 2026. Research, not in the app yet.
A clean reference model of a real kitchen: tall cabinets and an oven on the left, the range and sink along the back wall, an island, and a bay window with a round table on the right.
A reference model of a real kitchen, its corners placed by hand.
95%+
wall-length accuracy in the rooms we checked against a tape measure at our founder’s home
60 seconds
of ordinary iPhone video, solved on the phone in about a minute
5 to 8 cm
median error on plain walls against a tape measure, across eight walkthroughs

Where we’re going

With enough homes, Grainwork can see what one inspection never could.

  • Spot problems that repeatacross homes of the same age, builder or design.
  • Predict failuresbefore they turn into damage.
  • Inform the people who plan for homesinsurers, utilities and homebuilders, using combined data from many homes, never one home’s details without its owner’s permission.
A kitchen in morning light: forest green cabinets with brass knobs, marble counters, open oak shelves and a farmhouse sink.

See how Grainwork reads a home.

Take the tour Email us

Fixing up your own home? Get the free app.