Works great with NFC
I’m stoked that this can read and write NFC tags in a bunch of formats. I just tested with my OpenTag3D tags and it pulled in all of the info without me having to do anything at all. Awesome job!
Free
About
This app transforms your iPhone into an NFC reader and writer for 3D printing filament spools. It instantly displays filament details and allows you to read, write, and edit tag information. Optional integrations sync with inventory management systems and send spool data directly to your 3D printer.
✓NFC reader and writer for filament spools
✓Reads material, brand, color, temperatures, and remaining amount
✓Supports five tag formats (OpenPrintTag, OpenSpool, TigerTag, OpenTag3D, NFC+)
✓Write blank tags or edit existing ones
✓Optional Spoolman inventory synchronization
✓Optional direct sending to compatible 3D printers
✓No account, subscription, server, or cloud required
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What's New in SpoolSense
1.2.0
September 8, 2026
Support for OpenTag3D v2.000 tags. SpoolSense reads both the new v2 format and the older v1 format, choosing automatically based on what the tag says it is, so tags you have already written keep working exactly as before. New tags are written as v2, which needs an NTAG215 or larger. The writer now collects the fields v2 added: SKU, barcode, target chamber temperature and minimum nozzle diameter. They appear on the scan screen when a tag carries them. Also fixed: tags whose chip does not identify itself — common with unbranded and clone tags — now work properly. They could previously be rejected before a write started, be cut off at 240 bytes when read, or in some cases fail to scan at all.
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FAQ
What is SpoolSense?
SpoolSense is a utility app that turns your iPhone into an NFC reader and writer specifically for 3D printing filament spools. It allows you to quickly read and write information to NFC tags attached to your filament.
Does SpoolSense have ads?
No, SpoolSense is completely ad-free. The developer prioritizes user privacy and experience, ensuring no advertisements interfere with its functionality.
What devices does SpoolSense support?
SpoolSense requires an iPhone 7 or later for its NFC scanning and writing capabilities. The app is designed for iOS devices.
Is SpoolSense free to use?
Yes, SpoolSense is available for free. There are no in-app purchases or subscriptions required to use its core NFC reading and writing features.
How often is SpoolSense updated?
The latest version, 1.1.1, was released on August 21, 2026, indicating recent development activity. Users can expect ongoing support and potential updates.
What are the optional features of SpoolSense?
Optional features include syncing with a self-hosted Spoolman server for inventory management and sending spool data directly to compatible 3D printers like Snapmaker U1 and Klipper-based systems.
What is the age rating for SpoolSense?
SpoolSense has an age rating of 4+, making it suitable for a wide range of users. This indicates no mature content is present in the application.
How does SpoolSense handle user data and privacy?
SpoolSense is designed with a strong focus on privacy. It collects no data, has no analytics, no tracking, no accounts, and never sends your data anywhere, ensuring everything lives on your devices or servers.
