Filament tracking for 3D printing, without the fuss.
Spool Buddy is a simple, fast filament inventory app made for hobbyists who want to know what filament they have, where it is, and how much is left — without accounts, subscriptions, tracking, or complicated setup.
Add your filaments, organize them by brand, material, color, location, modifiers, and more. Track usage across one or multiple spools, keep drying logs, attach photos, archive old filament, and export or print your inventory when you need it.
Spool Buddy syncs with iCloud, so your filament library stays up to date across iPhone, iPad, and Mac without creating an account.
Features include:
- Track filament inventory, usage, and remaining amounts
- Multi-spool support for filaments
- NFC reading and writing
- iCloud sync with no logins
- Photos for filament entries
- Drying logs
- Custom brands and materials
- Detailed filament information, including colors, polymers, modifiers, fillers, and visual properties
- Automatic color names and color family filtering
- Support for gradients and complex filament colors
- Filter by storage location, brand, color family, modifiers, and polymer
- Sort by price, date added, color, brand, and name
- Group by brand or material
- Usage indicators at a glance
- Archive filaments you no longer actively use
- Export your inventory to CSV
- Print your filament inventory
- Optimized for iOS and macOS 26
- Small, fast, and designed to stay out of your way
Spool Buddy is completely free to use. There are no subscriptions, no locked features, and no required purchases. In-app purchases are optional tips only, for people who want to support the app’s development.
Made by an indie solo developer for people who just want a clean, useful way to manage their filament.
Awesome app, Easy UI and so many preset filaments to choose from
Cole Dimich
Really like the app, it’s pretty much exactly what I need and is designed really nicely from both a UI and UX perspective. The one feature that is missing for me personally is the ability to have multiple storage locations that are easily viewable. There is the option to add a storage location but no way to sort by those. I have printers in three locations and being able to track what I have stored at each location would be really beneficial. Any chance you could add that feature, whether it be adding location as another way to sort or if you add different locations to switch between similar to how HomeKit lets you swap between different homes in the app?
A data nerds dream come true
russdogg
I really just wanted a simple, no-frills app to keep track of the hundred + spools of filament I have lying around. The fact that this app is free, and also has a Mac app that syncs the data is the cherry on top. I’m off to catalog a bunch of filament now!
Developer Response
Thank you so much for the kind words! Hope you enjoy the app and please feel free to contact me in case something comes up!
Great filament tracking app
Twentythree2
This app is great! Simple & easy to use. I really appreciate the dev taking time to make this and share it with people. Thank you
Developer Response
Thanks for your kind words, I’m glad you like the app!
Great app
BlueHairChad
It would be awesome if it were possible to add UPCs and be able to add by scanning them. It would be great if this could generate labels with QR Codes also!
- New settings screen for macOS
- Photo attachments for filaments
- Bug fixes and improvements
Version 1.13.0
The developer, Martian Code Oy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
