# Spool Zone vs Filament

The clearest difference is in-app purchases: Filament at none against Spool Zone's 3. Spool Zone's advantage is iOS requirement (13.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

Spool Zone ships an update weekly, Filament fortnightly. The most recent releases landed on October 12, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Spool Zone | Filament |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 84 MB | 25 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [玉文 赵](https://appshunter.io/developer/1805502247) | [David Oreol](https://appshunter.io/developer/1892872687) |

## What reviewers say

### Spool Zone

[App page](https://appshunter.io/ios/app/spool-zone-3d-filament-box/id6744862175)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpoolZoneAir | $4.99 | one-time |
| Lifetime Membership | $7.99 | one-time |
| SpoolZonePro | $7.99 | 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 Zone free?

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

### Is Filament free?

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

### Do Spool Zone or Filament have ads?

Neither Spool Zone nor Filament shows ads.

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

Spool Zone ships an update weekly, and Filament fortnightly. Most recently, Spool Zone was updated on October 12, 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.*