SpoolLedger: Filament Log

SpoolLedger is a private, offline inventory and usage ledger for 3D-printer filament. Keep every spool, remaining gram, print allocation, material-cost snapshot, and correction clear without an account, subscription, advertising, analytics, or cloud dependency. • Add spools with brand, material, color, diameter, initial net weight, empty-spool weight, purchase cost, currency, storage location, threshold, notes, and an optional photo • Record one print across multiple spools with per-spool grams, result, duration, printer, and notes • Preserve initial weight, print usage, scale corrections, discards, reversals, and current balance as immutable events • Search and filter inventory by status and material • Review 7-, 30-, or 90-day usage, low stock, recent prints, material totals, and original-currency recorded costs • Export readable spool, event, and print CSV files or a text summary • Create checksum-verified complete backups with selected spool photos, then preview, merge, or replace safely Your ledger stays on your iPhone or iPad unless you explicitly export, back up, or send selected feedback. SpoolLedger does not estimate future consumption, recommend purchases, connect to printers, convert currencies, or connect to a store.