# SpoolKeep vs 3D Filament Inventory

The clearest difference is in-app purchases: 3D Filament Inventory at none against SpoolKeep's 1. 3D Filament Inventory also leads on update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SpoolKeep sells 1 one-off in-app purchase. 3D Filament Inventory asks for nothing beyond the download.

SpoolKeep ships an update every 2 months, 3D Filament Inventory every 2 weeks. Both last shipped on September 19, 2026.

## The numbers

| Metric | SpoolKeep | 3D Filament Inventory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 3 MB | 13 MB |
| Requires iOS | **17** | 18.1 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Claude-Alain Muller](https://appshunter.io/developer/1818892197) | [Vanesa Morales Jimenez](https://appshunter.io/developer/1878980702) |

## What reviewers say

### SpoolKeep

[App page](https://appshunter.io/ios/app/spoolkeep/id6746877203)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpoolKeep Premium | $1.99 | one-time |


### 3D Filament Inventory

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

**In-app purchases:** none


## Frequently asked questions

### Is SpoolKeep free?

SpoolKeep 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 SpoolKeep or 3D Filament Inventory have ads?

Neither SpoolKeep nor 3D Filament Inventory shows ads.

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

SpoolKeep ships an update every 2 months, and 3D Filament Inventory every 2 weeks. Most recently, SpoolKeep was updated on September 19, 2026 and 3D Filament Inventory on September 19, 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.*