SpoolFlux vs TagWriter4CFS Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpoolFlux
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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iOS app for reading and writing NFC tags on 3D printer filament spools. Supports OpenSpool, OpenPrintTag, ACE Pro, and TigerTag. Features: - Multiple NFC formats: read and write OpenSpool (ISO 14443), OpenPrintTag (ISO 15693/SLIX2), ACE Pro, TigerTag, and OpenTag3D - TD1 filament scanner: automatic color detection via USB-MIDI (connect the TD1 device using a Lightning/USB-C adapter) - Extruder temperature range (150–420 °C, 5 °C steps) with Min/Max slider - Heated bed temperature range (0–160 °C, optional) - Temperature presets per material - 24 predefined colors, add your own - Multicolor filaments: create multiple colors per filament (e.g., for multicolor spools) - 42 materials (PLA, PETG, ABS, TPU, PEEK, and more), add your own - 21 material variants (Matte, Silk, Rainbow, Glow, Carbon, and more), add your own - 42 predefined filament brands, add your own brands - Optional filament properties: weight (250 g–10 kg), diameter (1.75 / 2.85 mm), Spoolman-compatible spool ID - Filament library: save, load, search filaments, and export/import as a .sftemplate file - OpenFilament Database (OFDB): import filament data from the community database - JSON preview with syntax highlighting
TagWriter4CFS Mobile
This utility app streamlines filament tag creation for 3D printing. It connects to your printer to fetch live spool data, allowing you to quickly generate accurate tags with material, color, and spool status information. Reduce manual entry and keep your filament organized with this reliable tool.
- Create consistent filament tags
- Fetch live CFS slot data
- Review material, color, and spool status
- Write tags in a few taps
- Reduce manual entry
- Organize filament setup
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Create your own RFID tags for the 3D printer to detect as assign automatically in your CFS (Or side spool if supported). Create New tags, copy existing tags (for auto swap when spools are empty), format tags and reads existing tags. Load currently CFS slot tag data (Via wifi & IP address) and copy any spool data to a new tag. AUTO updates filament types from your printer to keep unto date! Select only the Colours / Filament types you use, re order these to suit. YOU WILL NEED A NFC READER, BLUETOOTH. ACR1555U BLE.. and some MiFare Classic 1K S50 RFID tags, ISO14443A 13.56Mhz or even reuse genuine ones again and again.
Screenshots
Verdict
The clearest difference is in-app purchases: SpoolFlux at none against TagWriter4CFS Mobile's 1. On price, rating, review sentiment and ratings volume there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. TagWriter4CFS Mobile sells 1 one-off in-app purchase. SpoolFlux asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for SpoolFlux against 5.0 for TagWriter4CFS Mobile. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Both ship on a similar rhythm, roughly weekly. Both last shipped on October 31, 2026.
| Parameter | SpoolFlux | TagWriter4CFS Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 8 — better | 3 |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Reimar Metzen | rob coops |
Customer experience
SpoolFlux
TagWriter4CFS Mobile
In-app purchases
SpoolFlux
No in-app purchases
TagWriter4CFS Mobile
- Unlock Write Access.$4.99
Questions
Is SpoolFlux free?
Is TagWriter4CFS Mobile free?
Which has better reviews, SpoolFlux or TagWriter4CFS Mobile?
Do SpoolFlux or TagWriter4CFS Mobile have ads?
Which is updated more often, SpoolFlux or TagWriter4CFS Mobile?
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