DrySpool is a private, offline filament tracker and spool inventory for 3D printing. It tracks every spool you own, predicts when each one needs re-drying, and prints scannable QR labels for your shelves — no account, no cloud, no ads, no subscription.

Whether you run PLA, PETG, ABS, TPU or nylon, DrySpool is the filament dryer log and moisture tracker that shows what's ready to print and what to dry first.

KNOW WHICH SPOOLS ARE DRY DrySpool models how each spool absorbs moisture over time — every material is different (PLA shrugs off humidity, nylon drinks it), and the estimate factors in how it's stored (sealed with desiccant, open shelf, in an AMS…) and your ambient humidity. Every spool shows a live moisture reading and when it's due to be re-dried, so you see at a glance what's ready to print and what to dry first.

DRY WITH THE RIGHT SETTINGS Each material comes with research-backed drying temperatures and times. Start a drying session, track it to completion, and the spool's moisture resets when it's done.

SCAN AND LABEL EVERYTHING Generate QR labels for spools and storage locations — print one at a time or 24-to-a-page on A4. The built-in scanner jumps straight to a spool, or moves a whole batch of spools to a new location in a single scan.

TAP-TO-FILL FROM BAMBU LAB RFID Tap a Bambu Lab spool to your phone and DrySpool reads the tag to pre-fill material, colour, weight and recommended drying temperatures.

IMPORT FROM YOUR SLICER Drop in a sliced .gcode or .3mf and DrySpool subtracts the filament used — including multi-colour prints — from the right spools automatically.

ORGANISE YOUR WORKSHOP • Inventory with photos, weight, cost and notes • Low-stock alerts — see what's running low on Home, with reorder reminders (Pro) • Auto-archive empty spools — kept but out of tracking, and they don't count toward the free limit • Three home-screen widgets — moisture summary, inventory, and a usage/days-left forecast • Storage locations (AMS, dryer slots, shelves, custom) • Per-printer print profiles (printer × material × brand, with per-spool overrides) • Manage your own materials, brands, dryers and printers • Works on phones, tablets and Chromebooks — the layout adapts to the bigger screen

YOURS, AND PRIVATE All your data stays on your device. No accounts, no tracking, no personal data collected. Back up and restore everything — including photos — to a single file whenever you like.

FREE & PRO DrySpool is free to use — the whole app, for up to 12 spools. DrySpool Pro is a one-time unlock (no subscription, no ads) that adds: • Unlimited spools • Smart re-dry reminders — a notification when spools need drying, so you never print wet • Low-stock reminders — a daily heads-up when a filament is running low, with a shareable reorder list • Photo gallery — several photos per spool, snap new ones with the in-app camera • Bulk RFID add — tap Bambu Lab spool after spool to add a whole batch in seconds • Custom label templates — pick which fields show, add custom text, and choose the font, accent and background colour (spool & location labels) • Themes & app icons — premium accent colours and a choice of alternate app icons • Automatic backups — scheduled .dryspool backups to a folder you choose (OneDrive, Drive or local) • Insights — filament used, spend and inventory value at a glance, by material and brand • Cost & inventory-value tracking • Export your whole library to CSV

Built by a one-person studio. Feedback welcome.