Comparison

SpoolFlux vs Gcode Viewer & Simulator

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

Gcode Viewer & Simulator

Features
Read full description

Open any gcode file and see exactly what your 3D printer will print — before you start. Gcode Viewer renders the complete toolpath in 3D: rotate, zoom and pan the model, scrub through every layer, and measure real distances in millimetres. WHAT YOU CAN DO • Open gcode from your slicer, Files, iCloud or a share sheet • View the print in 3D — top, front, side and ISO • Scrub the layer slider to check the print builds correctly • Measure distances and the print height • See print time, filament weight and cost estimates • Follow a running print layer by layer Built for makers who want to check a file before committing filament and time. SUBSCRIPTION Opening your own files requires a subscription. The bundled sample model is free to view. • Pro Weekly — full access, billed every week • Pro Monthly — full access, billed every month • Pro Yearly — full access, billed once a year Subscriptions renew automatically. Cancel anytime in your App Store settings. Terms: https://codigitalsolutions.com/terms Privacy: https://codigitalsolutions.com/privacy

Screenshots

SpoolFlux4 screens
Gcode Viewer & Simulator4 screens

Verdict

The call

The clearest difference is in-app purchases: SpoolFlux at none against Gcode Viewer & Simulator's 3. Gcode Viewer & Simulator's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.6). On price and ads 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. Gcode Viewer & Simulator sells 3 in-app purchases, starting at $2.99 per 7 days. SpoolFlux asks for nothing beyond the download.

Scorecard3 real differences · 7 level
SpoolFlux versus Gcode Viewer & Simulator: the parameters behind the verdict, then further details
ParameterSpoolFluxGcode Viewer & Simulator
PriceFreeFree
Rating5.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size7 MB38 MB
Age rating4+4+
DeveloperReimar MetzenCODIGITAL SOLUTIONS

In-app purchases

None

SpoolFlux

No in-app purchases

3 purchases

Gcode Viewer & Simulator

Subscriptions3
  • Weekly$2.997 Days
  • Monthly$4.991 Month
  • Yearly$29.991 Year

Questions

Is SpoolFlux free?
SpoolFlux is free to download, with no in-app purchases.
Is Gcode Viewer & Simulator free?
Gcode Viewer & Simulator is free to download, with in-app purchases available.
Do SpoolFlux or Gcode Viewer & Simulator have ads?
Neither SpoolFlux nor Gcode Viewer & Simulator shows ads.

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