Filament Manager

Filament Manager keeps a clear record of the filament currently loaded in each of your 3D printers. It works offline and does not require an account or server.

Create printers with custom names and assign one or more independent filament positions to each printer. For every position, record the material, RGB color, remaining weight, manufacturer, commercial name, spool weights, purchase date, storage location, batch and notes.

Features:
• Clear, responsive overview in portrait and landscape
• Multiple filament positions for multi-material and multi-color printers
• Material suggestions with support for custom names
• Natural A-Z, Z-A and custom drag-and-drop printer ordering
• Printer operational states and spool unloading
• Export, share, merge or replace the local database
• Czech and English interface
• Optional bidirectional synchronization with a self-hosted FilamentManager Server
• Persistent offline change queue, conflict resolution, pull-to-refresh and cloud connection status
• Experimental OpenPrintTag NFC-V reading and remaining-weight writing

FilamentManager Server source and installation documentation:
https://github.com/pihrt-com/filamentmanager-server

The OpenPrintTag codec and write-region logic pass automated tests using the official test vector. Reading and writing a physical Prusa spool is still awaiting hardware validation, so NFC writing should currently be treated as experimental.

Your inventory stays on your device in local-only mode. When you explicitly connect your own FilamentManager Server, inventory changes synchronize with that server over HTTPS. Passwords are not stored; authentication tokens use Android secure storage.