Filament Depot - Spool Tracker

Filament Depot is a 3D printer filament tracker that turns your filament shelf into a tidy, scannable inventory — without spreadsheets, photos, or guesswork.

Every spool is a coloured ring whose stroke length shows the remaining filament. One glance tells you what's running low, what's fresh, and exactly how much you have on hand across PLA, PETG, ABS, TPU, and any custom material you add yourself.

— TRACK AS YOU PRINT
Tap a spool, type the grams you used, done. The weekly usage chart and on-hand totals update instantly. An optional confirmation step makes it impossible to subtract by accident.

— LOG EVERY PURCHASE
Each top-up records grams, price, and vendor. Filament Depot computes your average cost per kilogram, flags price changes between purchases, and keeps the full purchase history for every spool.

— EDIT SPECS ANY TIME
Got the nozzle range wrong on a spool? Tap → Edit spool and fix the name, brand, material, colour, diameter, or temperatures. Your total grams and history stay intact.

— LOW-STOCK ALERTS YOU CONTROL
Pick your own low-stock threshold (5–50%). Spools below it get a flag on the Wall and a banner on the detail screen, so you reorder before you run out mid-print.

— YOUR LANGUAGE, YOUR CURRENCY
Choose the app's language in-app, independent of your phone's language, and pick the currency shown for filament prices (€, £, $ and more). Set it once and every spool, stat and price follows.

— FREE & PRO
Free includes two spools, all materials, and full usage tracking. Pro is a one-time purchase — no subscription — that unlocks unlimited spools, custom materials, and the complete price-history view.

— PRIVACY-FIRST
No accounts. No ads. No tracking. All your data stays on your device; the only network calls are to RevenueCat for purchase verification.

— SPEAKS YOUR LANGUAGE
English, Portuguese (Portugal & Brazil), German, Spanish, French, Italian, Japanese, Turkish, and Chinese (Simplified).

Filament Depot is built for makers who print enough to lose track. Build the inventory once, log every print, and never run out mid-job again.