Comparison

SpoolFlux vs TagWriter4CFS Mobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

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.

Highlights
  • 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
Features
Read full description

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

SpoolFlux4 screens
TagWriter4CFS Mobile4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TagWriter4CFS Mobile sells 1 one-off in-app purchase. SpoolFlux asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. Both last shipped on October 31, 2026.

Scorecard1 real difference · 9 level
SpoolFlux versus TagWriter4CFS Mobile: the parameters behind the verdict, then further details
ParameterSpoolFluxTagWriter4CFS Mobile
PriceFreeFree
Rating5.0 (8 ratings)5.0 (3 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings8 — better3
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhoneiPhone, iPad — better
Requires iOS18.617.0 — better
Further details — not scored
Size7 MB4 MB
Age rating4+4+
DeveloperReimar Metzenrob coops

Customer experience

SpoolFlux

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

TagWriter4CFS Mobile

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SpoolFlux

No in-app purchases

1 purchases

TagWriter4CFS Mobile

One-time1
  • Unlock Write Access.$4.99

Questions

Is SpoolFlux free?
SpoolFlux is free to download, with no in-app purchases.
Is TagWriter4CFS Mobile free?
TagWriter4CFS Mobile is free to download, with in-app purchases available.
Which has better reviews, SpoolFlux or TagWriter4CFS Mobile?
SpoolFlux and TagWriter4CFS Mobile are both rated 5.0 out of 5 on the App Store, from 8 and 3 ratings respectively.
Do SpoolFlux or TagWriter4CFS Mobile have ads?
Neither SpoolFlux nor TagWriter4CFS Mobile shows ads.
Which is updated more often, SpoolFlux or TagWriter4CFS Mobile?
SpoolFlux ships an update weekly, and TagWriter4CFS Mobile weekly. Most recently, SpoolFlux was updated on October 31, 2026 and TagWriter4CFS Mobile on October 31, 2026.

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