Comparison

Sc4nR vs SpoolFlux

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

Head to head
About

Sc4nR

Features
Read full description

Sc4nR is your all-in-one scanning solution. Scan QR codes, barcodes, NFC tags, and extract text from images - all in one privacy-focused app. Key Features QR Code & Barcode Scanner: Supports QR, EAN, UPC, Code 128, Aztec, PDF417, Data Matrix, and more NFC Tag Reader: Instantly read NFC tags and cards Live Text Recognition: Extract text from any surface in real-time Advanced Camera Controls: Switch lenses, adjust zoom, manual focus for small codes Complete History: Search, filter, favorite, and export your scans Code Regeneration: View scanned QR codes and barcodes as images Privacy First 100% Offline: Works without internet connection No Data Collection: Your scans never leave your device No Accounts: No sign-up required No Ads: Clean, distraction-free experience Export & Share Export your scan history in CSV, JSON, or text format. Filter by date and scan type. Share individual scans or export multiple items at once. Designed for Everyone Clean, intuitive interface with full support for Light and Dark mode. Available in English and Japanese. Download Sc4nR and take control of your scanning needs.

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

Screenshots

Sc4nR4 screens
SpoolFlux4 screens

Verdict

The call

The clearest difference is update cadence: SpoolFlux at weekly against Sc4nR's every 9 months. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sc4nR ships an update every 9 months, SpoolFlux weekly. The most recent releases landed on September 30, 2026 and October 22, 2026 respectively.

Scorecard1 real difference · 9 level
Sc4nR versus SpoolFlux: the parameters behind the verdict, then further details
ParameterSc4nRSpoolFlux
PriceFreeFree
Rating—5.0 (8 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—8 — better
Update frequencyEvery 9 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better18.6
Further details — not scored
Size4 MB7 MB
Age rating4+4+
DeveloperKyotoTech LLCReimar Metzen

In-app purchases

None

Sc4nR

No in-app purchases

None

SpoolFlux

No in-app purchases

Questions

Is Sc4nR free?
Sc4nR is free to download, with no in-app purchases.
Is SpoolFlux free?
SpoolFlux is free to download, with no in-app purchases.
Do Sc4nR or SpoolFlux have ads?
Neither Sc4nR nor SpoolFlux shows ads.
Which is updated more often, Sc4nR or SpoolFlux?
Sc4nR ships an update every 9 months, and SpoolFlux weekly. Most recently, Sc4nR was updated on September 30, 2026 and SpoolFlux on October 22, 2026.

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