Comparison

Clay Box vs SpoolFlux

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

Head to head
About

Clay Box

Discover and create clay recipes, design color palettes using photos, and find complementary colors. Search for recipes by specific clay colors or explore their appearance in blends. Supports multiple popular clay brands.

Highlights
  • Access clay recipe database
  • Create custom recipes
  • Design color palettes from photos
  • Find analogous/complementary colors
  • Search recipes by color
  • Supports multiple clay brands
Features
Read full description

Access the Clay Box data­base of recipes. Find new recipes as they are added by fel­low clay en­thu­si­asts, Cre­ate your own recipes using your favorite clay. Add a pho­to to cap­ture the ac­tu­al mix col­or. Design awesome color schemes by creating your own palettes with clay colors. Use a photo to pick the color you want to match. Find analogous or complementary clay colors for your palette. Search for recipes con­tain­ing a spe­cif­ic clay col­or, or see how a spe­cif­ic col­or might look in a skin­ner blend Currently supported makes are: Cernit, Fimo, Kato, Premo, Sculpy III and Souffle

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

Clay Box4 screens
SpoolFlux4 screens

Verdict

The call

The clearest difference is price: SpoolFlux at Free against Clay Box's $4.99. SpoolFlux also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 15). Clay Box's advantage is ratings volume (38 vs 8) and device support (3 vs 1). On 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

SpoolFlux is free to download; Clay Box costs $4.99 up front. Clay Box sells 15 one-off in-app purchases. SpoolFlux asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SpoolFlux holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 38 and 8 respectively. Written reviews point the same way: 71% of Clay Box's written reviews are positive against 100% of SpoolFlux's.

UpkeepUpdate frequency

Clay Box ships an update every 2 months, SpoolFlux weekly. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

Scorecard9 real differences · 1 level
Clay Box versus SpoolFlux: the parameters behind the verdict, then further details
ParameterClay BoxSpoolFlux
Price$4.99Free — better
Rating4.4 (38 ratings)5.0 (8 ratings) — better
Positive reviews70.6% of reviews100.0% of reviews — better
Number of ratings38 — better8
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18.6
Further details — not scored
Size9 MB7 MB
Age rating4+4+
DeveloperSarah HillReimar Metzen

Customer experience

Clay Box

All ratings38 ratings
Positive81.6%
Neutral7.9%
Negative10.5%
Written reviews17 reviews
Positive70.6%
Neutral17.6%
Negative11.8%

SpoolFlux

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

In-app purchases

15 purchases

Clay Box

One-time15
  • Earth tones palette - Prem0Free
  • Greens palette - Premo$1.99
  • Sandy Teal color palette$1.99
Show 12 more
  • Orange Ombre palette$1.99
  • Metallic Fall Colors$1.99
  • Metallic Mermaid palette$1.99
  • Sweater weather palette$1.99
  • Succulent palette$1.99
  • Blue Jeans palette$1.99
  • Pink Lily palette$1.99
  • Halloween Metallics - Premo$1.99
  • Tutti Frutti palette$1.99
  • Wildflower palette - Premo$1.99
  • Pink sunset palette$1.99
  • Adrift at Sea$1.99
None

SpoolFlux

No in-app purchases

Questions

Is Clay Box free?
Clay Box costs $4.99, and also offers in-app purchases.
Is SpoolFlux free?
SpoolFlux is free to download, with no in-app purchases.
Which has better reviews, Clay Box or SpoolFlux?
SpoolFlux is rated higher. Clay Box averages 4.4 out of 5 from 38 ratings, while SpoolFlux averages 5.0 from 8 ratings.
Do Clay Box or SpoolFlux have ads?
Neither Clay Box nor SpoolFlux shows ads.
Which is updated more often, Clay Box or SpoolFlux?
Clay Box ships an update every 2 months, and SpoolFlux weekly. Most recently, Clay Box was updated on October 17, 2026 and SpoolFlux on October 5, 2026.

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