Spool: 3D Print & Filament Log

Stop guessing. Spool is the print journal and filament tracker for makers who actually log.

Never ask "what settings did I use last time?" again. Log a print once and Spool remembers the exact temps, speed, layer height and infill that gave you a clean result — searchable any time you print that model again.

Know exactly what's left. Add each spool's weight and cost, and Spool tracks remaining grams, % left and cost-per-gram automatically. Logging a print decrements the spool you used — even across multiple filaments on one print (AMS / multi-material friendly).

Built offline. No account, no ads, no subscription. Everything stays on your device.

— TRACK YOUR FILAMENT —
• Material, brand, color, diameter, weights and cost per spool
• Live % remaining ring, cost-per-gram and estimated metres left
• Accurate, up-to-date material reference: nozzle/bed temps, drying temp & time, density, and handling flags (hardened nozzle, dry box, enclosure) for PLA, PETG, ABS, ASA, TPU, Nylon, PC, PVA, HIPS, PP and CF/GF composites

— LOG WHAT WORKED —
• Fast print log: printer, temps, speed, layer height, infill, supports, time, grams, result, rating and photo
• Smart temperature suggestions from the chosen filament
• One-printer presets and quick-start templates from popular 2025–2026 machines (Bambu, Prusa, Creality, Elegoo, Anycubic, Sovol, Voron…)

— LEARN FROM FAILURES —
• Tag what went wrong (warping, stringing, layer shift, clogs and more)
• A "failures by reason" view surfaces your recurring problems

— DRY ON TIME —
• Per-spool drying timers with sensible presets by material
• A notification when your PETG, TPU or Nylon is ready

— REUSABLE PROFILES —
• Save material + printer + settings as a profile and apply it in one tap

— SHARE & EXPORT —
• Generate a clean "print card" image to answer "what settings?" in seconds
• QR labels for your spools — scan to open them instantly
• A home-screen widget for spools running low
• CSV export of everything you've logged

— MADE TO FEEL GOOD —
• Modern Material 3 design with four bespoke themes: Spool Classic, Modern Maker Lab, Cyberpunk Print Farm and Nocturne (plus dynamic color)

Free to use with generous limits. A one-time Pro unlock adds unlimited spools and prints, settings profiles, the stats dashboard and CSV export — pay once, yours forever.