Filament Manager gives each spool a practical record of material, diameter, color, weight and price. Log filament use and drying sessions, then see estimated remaining length and cost and a low-stock indication.

This free app contains ads and stores your spool records locally. Enter the initial filament weight, current total weight, empty spool weight and a low-stock threshold in grams. Calculations use the values you enter and the selected material density to estimate usable weight, remaining percentage, length and value. Log usage in grams to reduce the recorded stock, or record drying time in hours with a note. Search spools by name, material or color and sort the list to find relevant stock. Review the journal when checking earlier changes. These estimates support your own inventory decisions; the app does not weigh spools or control a printer or dryer.