# Spool Master vs 3D Filament Inventory

The clearest difference is in-app purchases: 3D Filament Inventory at none against Spool Master's 2. 3D Filament Inventory also leads on ads (none vs shown). Spool Master's advantage is update cadence (every 3 days vs every 2 weeks) and iOS requirement (15.0 vs 18.1). On price and device support there is nothing between them.

Both are free to download. Spool Master sells 2 in-app purchases, starting at $1.99 per month. 3D Filament Inventory asks for nothing beyond the download.

Spool Master ships an update every 3 days, 3D Filament Inventory every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Spool Master | 3D Filament Inventory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spool-master/id6757678949/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 13 MB |
| Requires iOS | **15.0** | 18.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sebastien Girod](https://appshunter.io/developer/1472154080) | [Vanesa Morales Jimenez](https://appshunter.io/developer/1878980702) |

## 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 |


### 3D Filament Inventory

[App page](https://appshunter.io/ios/app/3d-filament-inventory/id6759489699)

**In-app purchases:** none


## Frequently asked questions

### Is Spool Master free?

Spool Master is free to download, with in-app purchases available.

### Is 3D Filament Inventory free?

3D Filament Inventory is free to download, with no in-app purchases.

### Do Spool Master or 3D Filament Inventory have ads?

Spool Master shows ads; 3D Filament Inventory does not.

### Which is updated more often, Spool Master or 3D Filament Inventory?

Spool Master ships an update every 3 days, and 3D Filament Inventory every 2 weeks. Most recently, Spool Master was updated on October 25, 2026 and 3D Filament Inventory on October 25, 2026.

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