Print timer & alerts
A live countdown with ETA, a notification when the print finishes and an optional heads-up 5–30 minutes before. Slicer too optimistic? Add 15 minutes or an hour and the alerts move with it.
Nozzlebook3D Print Tracker
Know what every print really costs.
Track every spool of filament, see the true cost of each print, and get an alert the moment it's done. The calm, simple companion for your 3D printer, on iPhone and iPad.
- iPhone & iPad
- Home & Lock Screen widgets
- Any FDM printer
- No account, no ads, no tracking
Features
Everything your printer doesn't tell you.
Spools, prints, power and maintenance in one place, with no spreadsheet.
True cost of every print
Filament, electricity and machine wear, worked out for each print. A quote calculator adds failure buffer, labour and markup when you sell prints.
Filament inventory
Brand, material, colour, diameter, price and grams left. Weigh a spool on a kitchen scale to update it, and get low-filament warnings and drying reminders.
Printers & maintenance
Hours, success rate and power bill for each printer, with a checklist that comes due by print hours: clean the nozzle, check belts, lubricate rods.
Stats
Monthly spend split into filament, energy and wear; filament used by material and brand; success rate and filament lost to failed prints.
Widgets
Time left on a print and your spool levels, on the Home Screen and Lock Screen. Optimised for iPhone, iPad and foldable iPhones.
Apple Watch
Active prints with a live countdown, low spools and this month's spend on your wrist, plus a complication for the next print to finish.
iCloud sync, free
Spools, printers, prints and settings sync across your iPhone and iPad through your own private iCloud, and come back after a reinstall.
Nozzlebook Pro
Free covers the print timer and alerts, cost per print, 1 printer and 5 spools, this month's stats and the countdown widget. A one-time purchase, shared with Family Sharing, adds unlimited printers and spools, the Watch app, every widget, the quote calculator, full stats history, reminders and CSV export.
Screenshots
Calm and clear, in light or dark.
How the maths works
Three costs, one honest number.
- Filamentgrams used × your spool's price per gram
- Electricityprinter watts ÷ 1000 × hours × your kWh rate
- Wearprinter price ÷ lifetime hours × hours
Costs are frozen when you log a print, so later price changes don't rewrite history.
No account to create
Nozzlebook uses your own iCloud to sync, and I can't see your data.
No ads or tracking
No analytics, no advertising and no third-party SDKs.
Yours to export
Export your print log as CSV whenever you like.
Support
Frequently asked questions
I didn't get a notification when my print finished.
Allow notifications for Nozzlebook in Settings → Notifications → Nozzlebook. You can check they work with Settings → Test alert inside the app. Focus modes can also hold notifications back.
My widget isn't up to date.
Widgets refresh from data the app saves. Open Nozzlebook once after starting or logging a print. If a widget still looks stale, remove it and add it again.
How do I update how much filament is left?
Open the spool and use Weigh-in: put the spool on a scale and enter the gross weight. Nozzlebook subtracts the empty spool weight.
How is the cost of a print worked out?
Grams used × the spool's price per gram, plus the printer's average watts ÷ 1000 × hours × your electricity rate, plus the printer's price ÷ its expected lifetime hours × hours. Set your electricity rate and currency in Settings. Costs are frozen when you log a print, so later price changes don't rewrite history.
Can I get my data out?
Yes. Settings → Export print log (CSV) creates a spreadsheet of your prints that you can save or share.
Is my data backed up or synced?
Yes, if you're signed in to iCloud. Nozzlebook keeps your spools, printers, prints and settings in your own private iCloud account, so they sync between your iPhone and iPad and come back if you delete and reinstall the app. Settings → iCloud sync shows whether it's on. If you're not signed in, everything stays on the device and is included in your normal iPhone or iPad backup.
How do I move to a new iPhone?
Sign in to the new iPhone with the same Apple account and install Nozzlebook. Your data downloads from iCloud on its own, which can take a minute the first time. Restoring an iCloud or computer backup works too. If you bought Nozzlebook Pro, it unlocks automatically; if not, tap Restore Purchases in Settings.
What does Nozzlebook Pro include?
Unlimited printers and spools, the Apple Watch app and complications, every Home Screen and Lock Screen widget, the quote calculator, full stats history with material and brand breakdowns, maintenance and drying reminders, and CSV export. It's a one-time purchase and Family Sharing gives it to your family. Anything you've already entered stays yours, even without Pro.
How do I delete my data?
Use Settings → Erase everything in the app. It deletes your data on this device and in your iCloud, so it's removed from your other devices too.
Questions, bugs or ideas?
Get in touch. If something isn't working, please include your device and iOS version.
[email protected]