Filament inventory for iPhone, iPad & Android
The filament tracker that knows what's left on every spool
Add your whole shelf in minutes: pick a brand and type, tap every color you own, and save them all at once. From then on SpoolVault knows what's left on every spool, what each print used, and what it cost — no server, no spreadsheet, works with any printer.
On a computer?Scan with your
phone camera.
Free for 30 days — no subscription starts, nothing to cancel · iOS 15+ & Android 7+
Brands, materials and colors built in for Bambu Lab, eSUN, Polymaker, Prusament, Hatchbox, Overture, Inland, Sunlu, Elegoo and BIQU — most with their empty spool weights too. Or add your own.
How it works
Set it up once, and it keeps count from there.
Add your whole shelf
Pick a brand and type, tap every color you own, set how many of each, and save them all in one go. Then do the same for your next brand.
Weigh it, or log the print
Put a spool on any kitchen scale and enter the number — the empty spool's weight comes off for you. After a print, log the grams it used and every spool updates.
Know what's left — and what it cost
See the grams remaining on every spool before you start a print, plus the material cost of every print and project.
What SpoolVault tracks
Every feature answers one question: can I finish this print, and what will it cost?
Weight, to the gram
Brand-specific empty spool weights turn one number from your kitchen scale into grams remaining — with a full weight history for every spool.
Cost per print
Add what you paid for a spool and every logged print gets a real material cost — no re-typing prices into a calculator.
Printers, AMS slots & locations
Assign spools to a printer, an AMS or multi-material slot, and wherever they really live — drybox, shelf or cupboard.
Print projects
Group a multi-plate build under one project and see the total filament used, the cost, and every spool that went into it.
Opened and unopened
Sealed stock and the spools you're printing from are tracked separately, so you always know what's spare. Search, sort and filter the lot.
No account, works offline
No sign-up and no login. Your inventory lives on your device, works with no signal, and exports to a backup any time. No ads.
See it in action
Straight from the app — this is what tracking your filament actually looks like.
Pricing
Try everything for 30 days. Nothing is charged when they end — you just choose whether to keep adding.
Days 1–30
Everything, free
Full access from the day you first open the app. No subscription starts, and there's nothing to cancel.
- Unlimited spools and printers
- Every feature in the app
- One optional reminder before day 30 — and only one
From day 31
Keep everything you added
Your spools, printers and history all stay, and so does tracking them:
- Weigh spools and log prints
- Edit weights, locations and prices
- Export a backup any time
Adding new spools or printers needs Premium: US$2.99/month or US$24.99/year.
After day 30, changing a spool's brand, type or color also needs Premium. Prices are in US dollars; the App Store or Google Play shows the price for your country. Premium renews through your Apple ID or Google account and can be canceled any time in iOS Settings or the Play Store app.
Filament tracking guides
Practical answers to the questions every maker hits — whether or not you use SpoolVault.
How much filament is left on my spool?
The weigh-and-subtract method that gives you grams remaining in under a minute — no unspooling, no guessing.
Read the guide →Bambu Lab & AMS filament tracking
Why AMS remaining-filament estimates drift, and how weigh-based tracking gives you exact grams per slot — including third-party spools.
Read the guide →Empty spool weights by brand
Plastic and cardboard spool weights for Bambu Lab, eSUN, Polymaker, Hatchbox, Overture, Sunlu, Elegoo and more.
See the table →How to track filament usage
Keep a running log of grams used across prints — without OctoPrint, a self-hosted server, or a spreadsheet.
Read the guide →How to organize 3D printer filament
Storage basics plus the digital catalog layer: know what you own, where it lives, and what's running low.
Read the guide →Filament cost per print
The simple math behind print costs — and how to get a real cost on every print automatically.
Read the guide →Spoolman alternative for iOS
An honest comparison: when a self-hosted Spoolman server makes sense, and when a phone app is the better fit.
Read the comparison →Frequently asked questions
Quick answers, with a full guide behind most of them.
How do I know how much filament is left on my spool?
Weigh the spool, subtract the empty spool weight for that brand, and what's left is grams of filament. SpoolVault has brand-specific spool weights built in, so you enter the total weight from the scale and it works out the rest. Learn more
How much does an empty filament spool weigh?
It depends on the brand and the spool — about 125–280 g across the brands in our table, and 140–250 g for most everyday spools. An empty Bambu Lab reusable spool weighs 250 g. Learn more
Can SpoolVault track filament in my Bambu Lab AMS?
Yes. Organize spools by printer and slot — AMS, AMS 2 Pro, AMS HT or AMS lite — and track remaining weight from real weigh-ins, including third-party spools the AMS can't read via RFID. Learn more
How do I track filament usage across prints?
Log each print with the grams used per spool; every spool's remaining weight updates straight away and print history keeps the running log. No server or spreadsheet needed. Learn more
What's the best way to organize 3D printer filament?
Dry storage and labels for the physical side, plus a digital catalog so you always know what you own, where it is, and what's running low. Learn more
How do I work out filament cost per print?
Grams used × price per gram. SpoolVault does it automatically for every logged print, using the actual price you paid for the spool. Learn more
Is there a Spoolman alternative for iPhone?
Yes — SpoolVault covers the spool-tracking core of Spoolman as a native app for iPhone, iPad and Android: no self-hosted server to run, and it works with any printer. Learn more
Is SpoolVault free?
For your first 30 days, everything is free: no subscription starts and there's nothing to cancel. After that, everything you've added stays. You can still weigh spools, log prints, edit weights, locations and prices, and export a backup. Adding new spools or printers needs SpoolVault Premium: US$2.99 a month or US$24.99 a year (prices vary by country). See pricing
Do I need an account?
No. There's no sign-up and no login. Your inventory lives on your phone or tablet, works offline, and you can export a backup file any time from Settings.
What devices does SpoolVault run on?
iPhone and iPad on iOS and iPadOS 15 or later, and Android devices on Android 7.0 or later.
Know your filament. Track your costs.
Print with confidence.
Every spool weighed, located and costed. Free for 30 days — no subscription starts.
On a computer?Scan with your
phone camera.