Spool: Filament Tracker

You have 40 spools. You're about to start a 12-hour print. How much PETG do you actually have? Spool is precision filament inventory for 3D printing enthusiasts. Track what you have, what things cost, and what's running low. Built by a maker who got tired of guessing. TRACK YOUR COLLECTION Lightning-fast spool entry with auto-fill from screenshots and product URLs. Material, brand, colour, weight, cost, purchase date, storage. Real remaining-weight tracking down to the gram. Low-stock warnings before you find out mid-print. THE HUB Tap the centre tab and a glass command centre opens over any screen. Every major action (add spool, log print, scan SpoolTag, analytics, printers) is two taps away. PRINT LOG & PRINT STORY Every print captures 24 process fields. 20 decoded automatically from your Bambu data: nozzle, layer height, infill, walls, speeds, temperatures, plate, adhesion, supports. Rate every print with 11 failure types, down to the exact layer. Tap any print and a full-screen story opens: costs, telemetry, spool gauges, and every previous attempt side by side. 19 insight cards surface temperature sweet spots, speed ceilings, drying impact, personal bests, and failure patterns. BAMBU LAB INTEGRATION Bambu printers log prints automatically via Bambu Cloud. Free for everyone, no manual entry. AMS multi-material tracked correctly. Smart spool matching learns and auto-selects on future imports. CATEGORIES 17 built-in, unlimited custom. Spool suggests one for every print and learns every override. Category Insights show success rates, costs, and trends so you see which kinds of prints are worth your filament. PRINTER MAINTENANCE Schedules from manufacturer guides for Bambu Lab, Prusa, Creality, Anycubic, Elegoo, Artillery, Flashforge, Sovol, AnkerMake, Qidi Tech, RatRig, and Voron. A live health score per printer. Overdue tasks turn red. Complete one and watch it climb. SPOOLTAG Tap your iPhone to an NFC-tagged spool and everything opens instantly. QR codes work from any camera app. Scan, log print, spool pre-selected. Label Studio designs and prints labels to Dymo, Brother, sticker sheets, or A4. AR Inventory overlays live data above every tagged spool, with Searchlight filtering by brand, material, colour, or status. ANALYTICS & INTELLIGENCE Five dashboards: Pulse, Economics, Energy, Material, and Hardware. Add your electricity rate once and every print shows its true cost, materials and energy combined, to the penny. Nozzle breakdowns, plate comparisons, quality-weighted grades, and variant-aware palettes for matte and silk filaments. WORKSHOP MANAGEMENT Six storage types (shelf, dryer, AMS, box, airtight case, vacuum bag) with humidity and seal date tracking. Shopping list and batch management for multi-packs. START FREE 20 spools, 2 printers, 4 storage locations. 30 days of analytics. Bambu Cloud sync, SpoolTag, AR Inventory, Print Story, Categories, and Printer Maintenance included. No card required. Live counters show where you stand against your limits. GO PRO, £4.99/month or £49.99/year Unlimited spools, printers, and storage. Lifetime analytics. CSV import. Label Studio with thermal exports and sticker sheets. Print Queue for batch production. Plus: full cross-print insight tray, category customisation, maintenance notifications, Home Screen and Lock Screen widgets, and Live Activities. The annual plan works out at £4.16/month and pays for itself in the waste it helps you avoid. SPOOL PACKS Not ready to subscribe? A one-time Spool Pack permanently adds 10 slots to your free account. SUBSCRIPTION & PURCHASE INFO Spool offers a one-time Spool Pack and two auto-renewing subscriptions: Spool Pro Monthly and Yearly. Payment charged to iTunes Account at confirmation. Auto-renews unless cancelled 24 hours before the period ends. Manage in Account Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lance-studio.com/privacy.html