Design feedback in context, not in emails
Share a STEP file, PDF or image via link. Your client pins a comment on the exact spot. No CAD license, no reviewer accounts needed.
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One tool. Three formats.
3D Models (STEP)
Browse CAD models directly in the browser. No installation, no plugins.
PDF Documents
Multi-page PDFs with page navigation and annotation pins anywhere.
Images
Renders, photos, sketches — up to 20 files in a single review with gallery navigation.
Feedback in 3 simple steps
Upload a file
Drag and drop a file into your project. Automatic type detection — STEP, PDF, or image.
Share a link
Copy a link with one click. Set a password, expiration date, and access level.
Collect feedback
Reviewer clicks on a specific spot, places a pin, and writes a comment. Everything in one place.
Everything you need
Pins with comments
Point to the exact spot on a model, PDF page, or image. Each pin has a comment thread.
Version comparison
Upload a new version and compare with the previous one — swipe slider, side by side, or change heatmap overlay.
Status & workflow
Each pin has a status: open, in progress, resolved. Multi-stage approval for teams.
Link sharing
Password, expiration, access control — Viewer or Commenter. Email invitations.
Organizations & projects
Group reviews into projects, manage your team, and control access. Each member sees only what they should.
3D assembly tree
Browse the STEP assembly hierarchy — expand subassemblies, hide parts, select elements.
Real-time
Comments appear instantly via WebSocket. No page refresh needed.
No installation
Everything works in the browser — including 3D models. Just a link.
Security
Encrypted passwords, expiring links, data isolation between organizations.
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Who is it for?
- Design studios sending projects for client approval
- Engineering teams reviewing CAD models
- Creative agencies collecting feedback on renders
- Teams organizing reviews into per-client projects
- Designers needing a quick OK from a client
- Photographers sending photos for selection
- Architects presenting visualizations
- ...even for a husband who doesn't know where to hang a painting
Your data is safe
Security is built into every layer of the application — from file storage to access control.
Encrypted connections
All communication happens over HTTPS/TLS. Files are encrypted AES-256 at rest on Cloudflare R2.
Hashed passwords
User and share link passwords are hashed with bcrypt — never stored in plain text.
Expiring links
Set an expiration date for share links — access is automatically blocked after it passes.
Data isolation
Each organization's data is completely isolated. No access to other organizations' reviews.
Access control
Precise access levels — Viewer (view only) or Commenter (view + comments).
Authorization at every step
Every API request verifies session, organization membership, and permissions for the specific review.
Your files don't train AI
We never use uploaded files to train AI models. Your intellectual property remains yours alone.
Simple pricing
- 3 active reviews
- 3 3D CAD conversions/mo
- Unlimited PDF & image reviews
- 500 MB storage
- 2 organization members
- Unlimited reviewers
- 15 active reviews
- 10 3D CAD conversions/mo
- Unlimited PDF & image reviews
- 5 GB storage
- 5 organization members
- Unlimited reviewers
- 50 active reviews
- 50 3D CAD conversions/mo
- Unlimited PDF & image reviews
- 50 GB storage
- 15 organization members
- Unlimited reviewers
Start collecting feedback in 30 seconds
No credit card. No commitment.
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