# Spool Buddy vs Filament

The clearest difference is in-app purchases: Filament at none against Spool Buddy's 3. Spool Buddy's advantage is iOS requirement (18.2 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Spool Buddy sells 3 one-off in-app purchases. Filament asks for nothing beyond the download.

Spool Buddy ships an update every 2 weeks, Filament fortnightly. The most recent releases landed on September 24, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Spool Buddy | Filament |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (9 ratings)](https://appshunter.io/ios/app/spool-buddy/id6752347588/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 25 MB |
| Requires iOS | **18.2** | 26.0 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Martian Code Oy](https://appshunter.io/developer/1099214691) | [David Oreol](https://appshunter.io/developer/1892872687) |

## What reviewers say

### Spool Buddy

[App page](https://appshunter.io/ios/app/spool-buddy/id6752347588)

Effortlessly manage your 3D printing filament inventory. Track brands, colors, and usage with a simple, fast interface. Syncs seamlessly across Apple devices without requiring logins or network calls.

**Highlights:** iCloud syncing, No logins or network calls, Track brands, colors, and modifiers, Search and filter by properties, Usage and inventory tracking, Optimized for iOS and macOS

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |


### Filament

[App page](https://appshunter.io/ios/app/filament-tracker/id6762094669)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spool Buddy free?

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

### Is Filament free?

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

### Do Spool Buddy or Filament have ads?

Neither Spool Buddy nor Filament shows ads.

### Which is updated more often, Spool Buddy or Filament?

Spool Buddy ships an update every 2 weeks, and Filament fortnightly. Most recently, Spool Buddy was updated on September 24, 2026 and Filament on September 28, 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.*