# Filament.uno vs OpenSpool

The clearest difference is in-app purchases: OpenSpool at none against Filament.uno's 1. OpenSpool also leads on ads (none vs shown) and review sentiment (100% vs 67%). Filament.uno's advantage is ratings volume (3 vs 1). On price and device support there is nothing between them.

Both are free to download. Filament.uno sells 1 one-off in-app purchase. OpenSpool asks for nothing beyond the download.

OpenSpool holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 67% of Filament.uno's written reviews are positive against 100% of OpenSpool's.

## The numbers

| Metric | Filament.uno | OpenSpool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/filamentuno/id1543388155/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/openspool/id6740551901/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 12 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paul Sohier](https://appshunter.io/developer/921377230) | [Spencer Owen](https://appshunter.io/developer/1790569930) |

## What reviewers say

### Filament.uno

[App page](https://appshunter.io/ios/app/filamentuno/id1543388155)

Easily manage your 3D printing filament stock. Track what you have, add new spools, and maintain your inventory with simple tools.

**Highlights:** Add filament spools, Manage inventory, Maintain filament stock, Simple functionality

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Filament.uno PRO | $2.99 | one-time |


### OpenSpool

[App page](https://appshunter.io/ios/app/openspool/id6740551901)

This utility app functions as a universal RFID reader for 3D printers. It supports various RFID systems used for 3D printer filament, including OpenSpool, OpenTag, and Creality. More information on integration is available via a provided GitHub link.

**Highlights:** Universal RFID reader, Reads OpenSpool RFID systems, Reads OpenTag RFID systems, Reads Creality RFID systems, Supports other RFID systems, 3D printer filament tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Filament.uno free?

Filament.uno is free to download, with in-app purchases available.

### Is OpenSpool free?

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

### Which has better reviews, Filament.uno or OpenSpool?

OpenSpool is rated higher. Filament.uno averages 3.7 out of 5 from 3 ratings, while OpenSpool averages 4.0 from 1 ratings.

### Do Filament.uno or OpenSpool have ads?

Filament.uno shows ads; OpenSpool does not.

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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.*