Spool Master vs Aim2Build
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
Aim2Build
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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
Verdict
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
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.
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.
| Parameter | Spool Master | Aim2Build |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 34 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Sebastien Girod | AIM2 LTD |
In-app purchases
Spool Master
- Spool Master Monthly$1.991 Month
- Spool Master Yearly$9.991 Year
Aim2Build
No in-app purchases
Questions
Is Spool Master free?
Is Aim2Build free?
Do Spool Master or Aim2Build have ads?
Which is updated more often, Spool Master or Aim2Build?
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