# Spool Master vs Aim2Build

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.

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.

## The numbers

| Metric | Spool Master | Aim2Build |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/spool-master/id6757678949/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 34 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sebastien Girod](https://appshunter.io/developer/1472154080) | [AIM2 LTD](https://appshunter.io/developer/1870903524) |

## What reviewers say

### Spool Master

[App page](https://appshunter.io/ios/app/spool-master/id6757678949)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spool Master Monthly | $1.99 | per month |
| Spool Master Yearly | $9.99 | per year |


### Aim2Build

[App page](https://appshunter.io/ios/app/aim2build-brick-inventory/id6758105792)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*