Comparison

Spool Master vs Aim2Build

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

Head to head
About

Spool Master

Manage your 3D printing filament stock with NFC tag reading/writing, inventory tracking, and smart shopping lists. Optimize expenses and reduce waste for hobbyists and professionals.

Highlights
  • NFC reading and writing for spool tags
  • Complete inventory management
  • Detailed statistics and value tracking
  • Automatic low stock alerts
  • Smart shopping list generation
  • Print settings configuration
  • Multi-device synchronization
Features
Read full description

Spool Master - The complete app to manage your 3D printing filament stock MAIN FEATURES NFC Reading and Writing • Read NFC chips from Anycubic and Prusa (OpenPrintTag) spools • Write your own custom NFC tags • Automatic tag detection Complete Inventory Management • Add spools by NFC scan or manually • Track remaining weight of each spool • Manage prices and calculate total value • Organize by brand, material and color • Automatic low stock alerts Detailed Statistics • Overview of your inventory • Total value of your stock • Number of materials, colors and brands • Automatic shopping list Smart Shopping List • Automatic addition of low stock spools • Mark ordered filaments • Add manually or by NFC scan Advanced Color Picker • Full palette with RGB sliders • Opacity support • Real-time preview Print Settings • Extruder temperatures (min/max) • Bed temperatures (min/max) • Filament diameter • Spool length COMPATIBILITY • Anycubic: Full reading and writing • Prusa: OpenPrintTag reading and writing (NFC-V) • Generic NFC tags: Custom writing • All other brands, including Bambu Lab and Creality: manual entry with full inventory management • Support for 22 filament brands • Support for 25 material types (PLA, PETG, ABS, TPU, etc.) MULTILINGUAL App available in 40 languages SYNCHRONIZATION • Multi-device synchronization • Offline mode available UNITS AND CURRENCIES • Multiple currency support • Metric or imperial units • Automatic conversion MODERN INTERFACE • Dark and light mode • Sleek design • Intuitive navigation • Visual statistics SECURITY AND PRIVACY • Your data remains private • Secure local storage PREMIUM VERSION AVAILABLE • Cloud synchronization • Ad-free • Priority support Whether you're a hobby maker or a professional 3D printer, Spool Master helps you optimize your filament management, reduce waste and control your expenses. Download now and take control of your filament inventory! https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Aim2Build

Features
Read full description

Aim2Build helps you get more from your LEGO collection. Instead of searching through instructions, Aim2Build starts with your inventory and shows you which sets you can build — and how close you are to completing others. What you can do - Add and save your LEGO inventory - See clear buildability percentages - Find sets you can already build or are close to finishing - View missing parts at a glance Aim2Build is designed to be fast, simple, and practical — whether you’re a casual builder or a serious collector. The web version is free to explore. The iOS app offers optional Pro features for users who want deeper insights and faster decisions.

Screenshots

Spool Master4 screens
Aim2Build4 screens

Verdict

The call

The clearest difference is in-app purchases: Aim2Build at none against Spool Master's 2. Aim2Build also leads on ads (none vs shown). Spool Master's advantage is update cadence (every 5 days vs every 3 weeks). On price, device support and iOS requirement 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. Spool Master sells 2 in-app purchases, starting at $1.99 per month. Aim2Build asks for nothing beyond the download.

UpkeepUpdate frequency

Spool Master ships an update every 5 days, Aim2Build every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Spool Master versus Aim2Build: the parameters behind the verdict, then further details
ParameterSpool MasterAim2Build
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.1
Further details — not scored
Size34 MB34 MB
Age rating4+4+
DeveloperSebastien GirodAIM2 LTD

In-app purchases

2 purchases

Spool Master

Subscriptions2
  • Spool Master Monthly$1.991 Month
  • Spool Master Yearly$9.991 Year
None

Aim2Build

No in-app purchases

Questions

Is Spool Master free?
Spool Master is free to download, with in-app purchases available.
Is Aim2Build free?
Aim2Build is free to download, with no in-app purchases.
Do Spool Master or Aim2Build have ads?
Spool Master shows ads; Aim2Build does not.
Which is updated more often, Spool Master or Aim2Build?
Spool Master ships an update every 5 days, and Aim2Build every 3 weeks. Most recently, Spool Master was updated on November 5, 2026 and Aim2Build on October 31, 2026.

Other comparisons