Every feature, straight up
Everything below the fold is free forever, for you and for everyone you share with. Pro adds room, control, and history on top. No feature is ever taken away from a recipient.
Free, for everyone, forever
No account needed to view. A free account unlocks saving and sharing.
✓Full 3-D viewer in your browser
STEP, STP, IGES, IGS, STL, OBJ, glTF, GLB and 2D DXF. Drag a file onto the window and go. Nothing to install, no watermarks, no time limit.
✓Use it anywhere
Phone, tablet, laptop, desktop: same interface, same features, full functionality on every screen. If it has a browser, it runs the viewer.
✓Real measurements
Distances, angles and more, in imperial or metric. Pin as many measurements on screen at once as the review needs.
✓Assemblies, part by part
Multi-part models come with the full part list. Show, hide, or isolate every part in the file to see exactly what you are building.
✓Full-color models
Color STEP files render in color for everyone. See the part the way its designer intended, not a gray blob.
✓Notes pinned to the part
Drop a note on the exact face, hole or edge you mean. Notes stay anchored to the geometry while the model rotates.
✓Discussions on the model
Threaded discussion lives with the shared model, next to the pinned notes. Review the part, not a screenshot of it.
✓Documents travel with the part
Attach PDF drawings, BOMs, DXF files and images to a model. They bundle with it into one package that shares with a single link.
✓Share links that carry your setup
Share a model with your measurements and notes already staged. Recipients open it free, exactly how you framed it, and can download the originals when you allow it.
✓Send to several people at once
Email a share to multiple recipients in one go. People without an account get an invite that turns into one.
✓Save your models
Keep up to 3 models (100 MB) in your library on the free plan, ready to reshare any time.
✓Join unlimited groups
Being in a group is always free: see what is shared to your groups, discuss, and follow updates.
✓Latest revision, automatically
Shared models follow the owner’s newest revision, so you are never quoting from a stale file.
✓Always improving, never an upcharge
We ship new features and improvements constantly, and they land at no additional charge. The service just keeps getting better.
Anonymous vs Free vs Pro
Anonymous means no account at all. Free accounts cost nothing. Pro is $9.99/mo, and optional add-ons stack on Pro only, $2.49 per block, up or down any month.
Standard features
| Feature | Anonymous no account | Free $0 | Pro $9.99/mo |
|---|---|---|---|
| View models in your browserdrag and drop, all supported formats, no install | ✓ | ✓ | ✓ |
| Works on phone, tablet, laptop and desktopsame interface and functionality on every device | ✓ | ✓ | ✓ |
| Measurements, pinned notes, sectioning | ✓this session only, nothing saved | ✓ | ✓ |
| Show, hide and isolate every partfull part list on multi-part models | ✓ | ✓ | ✓ |
| Full-color model viewingcolor STEP files render in color | ✓ | ✓ | ✓ |
| Open share linkssee the sender’s staged measurements and notes | ✓ | ✓ | ✓ |
| Download original files from a shareincluding STEP files, when the sender allows downloads | ✓ | ✓ | ✓ |
| View documents attached to a shared modelPDF drawings, BOMs, DXF files, images | ✓ | ✓ | ✓ |
| Attach documents to your modelsbundle drawings, BOMs, DXF and images with the model and share as one package | ✕ | ✓ | ✓ |
| Join discussions on shared models | Sign in required | ✓ | ✓ |
| Multi-recipient email shares and invites | ✕ | ✓ | ✓ |
| Saved model storageversion history counts once per stored byte | ✕ | 3 models, 100 MB | 500 MB includedas many models as fit |
| Active share links | ✕ | 10 | 50 included |
| Per-share permission controlsallow or block download, measure, comment, per share and per person | ✕ | Standard defaults | Full control |
| Share expiration control | ✕ | Fixed 30 days | Custom, hours to never |
| Version history on your models | ✕ | Recent versions | Full historyrecipients can browse attached versions |
| Join groups and group discussions | ✕ | ✓ | ✓ |
| Create groupswith owner and admin roles | ✕ | Join only | Up to 25 owned |
| Folder shares with live contentsshared folders always show what is in them now | ✕ | ✕ | ✓ |
Optional add-ons, Pro only
| Add-on | Anonymous | Free | Pro |
|---|---|---|---|
| Extra storage$2.49/mo per additional 500 MB, linear, change any month | ✕ | Not available | ✓ |
| Extra share links$2.49/mo per additional 50 active links | ✕ | Not available | ✓ |
Start free. Upgrade the day you need the room.
Recipients never pay either way. Pro just gives the sender more storage, more active links, and full control.