Free, forever
Everything Spool does
Spool is a free home for the 3D models you want to print: save them, put them in order, print them, and remember how each one turned out.
Save from anywhere
Tap share on a model in MakerWorld or Bambu Handy, pick Spool, and the save form opens with the picture, title and maker already filled in. On a computer, paste the link instead — same result.
A library you can actually search
Every model you save sits in one place with its photo, the maker's name, your tags, your notes and the filament you plan to use. Search by name, or filter down to just the PETG jobs, just your own designs, or just the ones you've never printed.
A print queue in your order
Decide what's next instead of scrolling a bookmark list. Drag models up and down, send an urgent one to the top, and tick things off as the printer works through them.
Remember how every print went
Log each print as it finishes: went well, needed a tweak, or failed — with a photo and a note about the settings. Next time you open that model you can see what happened last time, so you never repeat the same mistake.
Search MakerWorld inside Spool
The MakerWorld tab searches MakerWorld without leaving the app. Sort by what's most liked or newest, see what you've already got with a “Saved” tick, and tap anything to drop it into your library.
Your own designs too
Made something yourself? Add it with a cover photo and attach the real files — 3MF, STL, STEP and the rest. They're stored with your account, so you can pull them down on any machine you sign in on.
Print for your friends
Share a link with a friend and they can ask you to print something — either from your library or a link of their own. Each request comes in with their note and the day they'd like it by, and a yes from you drops it straight into your queue.
Backups you control
Export everything to a single file whenever you like: models, queue, print history, photos and your design files. Import it back on another device, or keep it as your own safety copy.
Works when the signal doesn't
Installed on your phone, Spool opens instantly and keeps working in a workshop with no signal. Anything you change while offline goes up to your account the moment you're back.
How it works
Save it
Found something on MakerWorld? Share it into Spool, or paste the link. The picture, title and maker are filled in for you.
Line it up
Drop it into your print queue in the order you actually want to print, and move the urgent one to the top.
Note how it went
After the print, log it: came out well, needed a tweak, or failed — with a photo and the filament you used.
Install it on your phone
Spool installs straight from the browser — there's no app store download.
Open Spool in Chrome on your Android phone.
Tap the three dots, then “Add to Home screen”, then “Install”.
Open it from your home screen. It runs full screen, keeps working when you're out of signal, and shows up in the share menu so links from MakerWorld or Bambu Handy come straight in.
On an iPhone, use Safari's share button and “Add to Home Screen”. Everything works there too, apart from receiving shared links from other apps.
Your library is yours
Spool stores what you put in it — the models you save, your tags and notes, your print photos and your own design files — against your account, and nothing else. Nobody else can see it, it isn't sold or shared, and there are no ads. You can export the whole lot to a file at any time, or delete everything for good from Settings.
Common questions
Is Spool really free?
Yes. Spool is free to sign up for and free to use, with no trial and nothing to upgrade to.
Do I need an account?
Yes, and Google is the only way in. That means no password to invent or remember, and your library follows you to any phone, tablet or computer you sign in on.
Does it work offline?
Yes. Once installed, Spool opens and works without a connection — you can browse your library, reorder the queue and log prints. Anything you change goes up to your account as soon as you're back online.
Does it work on iPhone?
Yes, in Safari, and it can be added to your home screen. The one thing iPhones don't allow is sending a link into Spool from another app's share menu; you can paste the link instead.
Who can see my library?
Only you. Your models, notes, photos and files are tied to your account and nobody else can read them. Spool doesn't sell or share anything, and there are no ads.
Can I get my data back out?
Any time. Settings has an Export button that saves everything — models, queue, print history, photos and your own design files — as a single file you keep. There's also a button that deletes the lot for good.
Start saving your work
One tap with Google and your library is ready.
Spool is an independent, free project. Not affiliated with Bambu Lab or MakerWorld.