For construction teams
Catch the changes nobody clouded. Claim the variations you're owed.
Upload the old revision and the new one, or send them over from Aconex. RevRadar flags the substantive changes between revisions, quotes the callout text each one is based on, and ranks them by impact on the works. Far less slips through — and what you find, you can claim.
Send revisions straight from Aconex · Australian-hosted
The problem
Revisions are slipping through.
Changes that aren't clouded.
Drafters miss clouds. The rev tag updates but the actual change isn't marked. You only spot it on site — or the RFI tells you.
Hours per set, by eye.
Reviewing multiple drawings against the previous revision takes hours. You still aren't confident you caught everything.
Too many jobs, not enough eyes.
Running three jobs at once, you can't check every sheet against the last revision. The one change you trusted the rev cloud to mark becomes an RFI three weeks later — and a cost you're now arguing over.
How it works
What actually happens to your drawings.
You give it two revisions.
Upload the old set and the new one, or transmit the new revision to RevRadar from Aconex the way you'd transmit it to anyone else on the project. It works on PDFs exported from CAD — the format your revisions are issued in.
It maps the differences.
First it lines the two sheets up, so a drawing that's shifted or scaled slightly doesn't come back as a thousand false changes. Then it goes over the whole sheet and marks where linework moved, appeared or disappeared. Marks close together get grouped, so one relocated column is one change and not forty.
AI reads each change in context.
Each grouped change is cut out along with the drawing around it and read properly — the dimensions, the callouts, the notes sitting next to it. That's how it tells a moved gridline from a drafter nudging a line weight.
You get a ranked report.
Each finding written up in plain English and ordered by how much it actually affects the work, worst first. Export it as a PDF, sign it off, and it records who reviewed what.
What you get
Each finding, grounded in the drawing.
Each finding quotes the words it read off the drawing and tells you which gridlines to look between, so you can check it against the sheet in seconds.
Drawing Comparison Report — SK-001 — Rev F to G
Generated 03 May 2026 · 11:43 AEST
Summary of Changes
New 40N12-200 × 3500 reinforcement bar group added at the slab edge.
Bar diameter increased N12 → N16: 4N12-200 x 9300 changed to 4N16-200 x 9000. A new 2N12 bar group also added.
Reinforcement group 2N16-150 (1500mm) and its dimension annotation removed from the slab layout.
Features
Built around how you actually review.
Send revisions straight from Aconex
Transmit the new revision to RevRadar the way you'd send it to any other party on the job, and it's compared against the last set you sent. Nothing to export and re-upload — it stays inside Aconex.
Reads drawings the way your trade does
A structural set gets read as structural, a services set as services. Findings come back in the language your trade uses, and it knows a real change from a drafter tidying up linework.
Built for CAD-exported PDFs
Drawings exported to PDF from the CAD package compare cleanly — that's the format revisions are issued in. Scanned or image-only sheets aren't supported: rather than hand you a degraded comparison, RevRadar tells you upfront and asks for the CAD export.
Tells you what to chase first
Findings come back marked High, Medium or Low by how much they affect the work — not by how big the mark is on the page. The traffic light tells you where to start.
Still stands up months later
Every report records exactly which version of RevRadar produced it and how it was set up at the time. When a variation gets argued six months down the track, the finding holds.
FAQ
The short answers.
How accurate is the AI?+
It can miss changes and it can be wrong — treat it as a second set of eyes, not a replacement for your own. Every finding quotes the text it read off the drawing so you can check it against the sheet, and waving off one that doesn't matter takes a single click.
Does it work with Aconex?+
Yes. You transmit the revision to RevRadar from Aconex, the same way you'd send it to any other party on the project, and it's compared against the last set you sent. There's no account linking or background sync — RevRadar sees a set when you send it.
What file types do you support?+
PDF exported from CAD. Scanned or image-only PDFs aren't supported — the comparison is built on the CAD linework, so rather than run a degraded compare we ask for the CAD export. DWG and DXF are on the roadmap.
Where is my data stored?+
In Australia. Each company's drawings are walled off from every other company's at the database level. Change detection runs on AI models hosted in the United States — our Privacy Policy sets out exactly what is sent and who processes it.
Can I export the report as a PDF?+
Yes. Every report exports to PDF, and we can also send it as a shareable link that opens in a browser without a login.
What happens after I request a demo?+
We'll ask you for two revisions of a real drawing off one of your jobs — the older set and the current one. We run the comparison and walk you through exactly what it found, on your drawings rather than a canned example. If it doesn't find anything worth knowing about, we'll tell you that too.
Am I locked into a contract?+
No. There's no lock-in. We'll agree the commercial terms with you directly when we set you up, and you can stop whenever it stops being worth it.
Why is it demo-only right now?+
We're onboarding deliberately rather than opening the doors, so every customer gets the AI tuned on the drawings they actually deal with and a human checking the output before it reaches them. Request a demo and we'll get you booked in.
Demo on your own drawings
See what your last reissue actually changed.
Send us two revisions off a real job — the older set and the current one. We'll run the comparison and walk you through every change it found, including the ones nobody clouded. No canned example, no obligation.
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