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SpoolFlux

SpoolFlux

RFID Tags for 3D Printing

8 ratings
5 reviews
🔧 Utilities
📊 Productivity
Free

Details

  • Released
  • Updated
  • February 3, 2026
  • September 9, 2026

Developer

Reimar Metzen
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About

Manage NFC tags for 3D printer filament spools with support for various formats like OpenSpool and TigerTag. Features automatic color detection, temperature presets, and a comprehensive filament library. Integrates with the OpenFilament Database.

✓Read/write multiple NFC tag formats
✓Automatic color detection via TD1 device
✓Customizable temperature presets
✓Extensive filament and material library
✓Support for multicolor filaments
✓Import from OpenFilament Database
✓Save, load, and export filament data
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What's New in SpoolFlux

2.1.1

September 9, 2026

- Added support for OpenTag3D (V2). - Added the ability to search for filament colors by hex code in the filament list. - Improved TD1 handling with direct access to search in the new filament list.

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User reviews

Most RecentHighest RatedLowest Rated

Works great with OpenTag3D

Just tested this on my OpenTag3D tags and it can read and write them as-is, including the goofy non-genuine bootleg tags that other apps struggle with. Works great!
MutmackMutmack

Response from developer

Thank you very much; I really appreciate the feedback.

Amazing!

Awesome app! Couldn’t live without it.
Fade2blk9Fade2blk9

Response from developer

I’m very happy—thank you.

Excellent

Awesome app for use with tags that work with the Snapmaker u1 extended firmware.
NutFlush920NutFlush920

Response from developer

Thank you—the printer was the reason I developed the app.

Fantastic Utility!!

Super easy to use; great for managing filament RFID tags, I use it for my Snapmaker U1 running Paxx12 firmware and it’s indispensable
Lost GunnerLost Gunner

Response from developer

Thank you

Tag writer for the iOS community

Works flawlessly as mentioned, exactly doing the workflow I planned to add to my 3d printing hobby. I was almost given up until I found SpoolFlux, similar apps or software appear on Android or Chromebook world, but not iOS until now and this app really save the iOS community. Look forward to getting more features and expanded material database with hex color data.
Well done Reinar, appreciate the work.
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Bill5547Bill5547

Response from developer

Thanks a lot for the awesome review — really appreciate it! Great to hear that SpoolFlux fits your workflow. More features and a bigger material database (including hex colors) are definitely coming. 🙂

FAQ

What NFC tag formats does SpoolFlux support?

SpoolFlux supports OpenSpool (ISO 14443), OpenPrintTag (ISO 15693/SLIX2), ACE Pro, TigerTag, and OpenTag3D formats for reading and writing NFC tags.

How does SpoolFlux detect filament color?

SpoolFlux features TD1 filament scanner functionality, which automatically detects color via USB-MIDI when the TD1 device is connected using a Lightning/USB-C adapter.

Can I set custom temperatures for different materials in SpoolFlux?

Yes, SpoolFlux allows you to set temperature presets per material for both the extruder (150–420 °C) and an optional heated bed (0–160 °C).

Does SpoolFlux allow for managing multicolor filaments?

Yes, SpoolFlux supports multicolor filaments, enabling you to create multiple color entries for a single filament, ideal for spools with varied colors.

How can I add my own filament data to SpoolFlux?

You can add your own colors, materials, material variants, and filament brands directly within SpoolFlux. It also allows importing data from the community-driven OpenFilament Database (OFDB).

What are the supported devices for SpoolFlux?

SpoolFlux is currently available for iPhones, as indicated by its supported devices list.

How often is SpoolFlux updated?

The latest version of SpoolFlux is 2.1.0, and it was last updated on May 24, 2026, suggesting a recent update cycle.

Does SpoolFlux have ads?

No, SpoolFlux does not contain advertisements, providing an ad-free experience for users.