Sc4nR vs SpoolFlux
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sc4nR
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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.
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
Screenshots
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sc4nR ships an update every 9 months, SpoolFlux weekly. The most recent releases landed on September 30, 2026 and October 22, 2026 respectively.
| Parameter | Sc4nR | SpoolFlux |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (8 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Every 9 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 4 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | KyotoTech LLC | Reimar Metzen |
In-app purchases
Sc4nR
No in-app purchases
SpoolFlux
No in-app purchases









