Meet the
Spool Inspector.
A scale + QR scanner that handles the boring part of inventory. Drop a spool on, scan the code, and you're logged. No app needed.
Less typing.
More printing.
Built by makers who got tired of spreadsheets, sticky notes, and digging through drawers to find that one roll of "the good translucent green." Every feature exists because someone in the forum asked for it.
2,000+ filament catalog
Pick your brand and color. We've already got the diameter, density, recommended bed temp, and drying schedule on file.
AI photo identification
Snap a label or box. Brand, material, color, and recommended settings populate themselves.
Project-based usage
Tie weighings to print jobs. See what every part actually cost — not what your slicer guessed.
Low-stock alerts
Set thresholds per material. We'll surface a one-click reorder link when you're running thin.
Multi-printer support
Tag spools by location and assigned printer. Built for one machine; ready for a print farm.
Add on mobile, print at the desk
Start a batch in the workshop with your phone. Photo-ID a stack of new spools, scan their boxes, or type them in. Every entry syncs to your desktop in seconds — sit down, sheet-print all the labels at once, peel and stick.
From box to dashboard
in under a minute.
Add
Snap a photo, scan a QR, or pick from the catalog. Auto-fills brand, color, density, and recommended settings.
Weigh
Drop the spool on the Spool Inspector — or punch in a number. Net weight is calculated against the brand's empty-spool tare.
Track
Each weighing logs to a project. Watch a chart of every gram you've extruded, and get alerted before you run out.
The app is free. Always.
Optional hardware if you want it. Optional pro features if you run a farm.
Join 14,000 makers
building the catalog.
Every filament you submit joins the public catalog after a quick review. The forum is where feature ideas, bug reports, and tips land — and where you'll see what's shipping next.