iPhone and iPad app
Infill turns the two numbers your slicer already gives you, grams and print time, into what a print costs you and what to charge for it.
| Labor | 3.34 |
| Material | 0.94 |
| Machine | 0.49 |
| Failed prints | 0.20 |
| Electricity | 0.13 |
| Total cost | 5.10 |
Worked example using Infill's own default profiles, at a 4 percent failure rate and a direct sale with no marketplace fees. Every figure is editable, and the listed lines always add up to the figure at the top.
On screen
What it does
Filament, electricity, machine depreciation, wear, your hands-on time, post-processing, the material flushed at every color change, packaging and shipping, and the prints that fail. The listed lines always add up to the figure at the top.
One tap switches between Friend, Known, Stranger and Business. A friend pays cost. A shop pays a commercial premium. Your hourly rate and your margin move together, the way you already price in your head.
Every filament in the print is charged at its own rate, and the material flushed at each change gets its own line instead of being buried in a waste percentage. On a four-color print it is routinely the second largest cost.
Open a .gcode from PrusaSlicer, Bambu Studio, OrcaSlicer or Cura, or a sliced .3mf project from Bambu Studio or OrcaSlicer. Grams and print time fill themselves in. A sample file is included, so you can try the import without a slicer to hand.
Keep the spools you actually own: color, weight, what you paid. Saving a quote takes its grams off the spool it used, waste and flushed material included, so the weight on the shelf stays right without weighing it. Spools running low are flagged.
All of it is worked out on the device. No account, no cloud, no backend, no advertising SDKs, no analytics, which is also why it keeps working with no signal in the workshop.
Set up your printer, your filament prices, your electricity tariff and your hourly rate once. After that a quote takes two numbers straight off the slicer.
Free on the App Store. iOS 17.0 or later, iPhone and iPad. No account, no advertising, no tracking.
Maths that is actually right
A 50 percent margin means the price is twice your cost. A 50 percent markup means 1.5 times. On a cost of 12.00 that is the difference between charging 24.00 and charging 18.00. Infill keeps them separate and labels them properly.
At a 20 percent failure rate you pay for 1.25 prints on average, not 1.2, because you rerun the job until one good part comes off the bed. Infill divides by one minus the failure rate instead of adding a flat surcharge.
Etsy takes its cut of the selling price, which is the number you are still trying to work out. Applying the percentage to your cost leaves you short. Infill solves for the price and tells you the item price to put on the listing.
Who uses it
Two numbers off the slicer, pick Friend or Stranger, and share the full breakdown as text straight back into the conversation that asked for it.
Set the channel and Infill works back from the profit you want to the item price to list, with the platform's cut and any fixed listing fee already taken out. Marketplace fees are part of Pro.
Each printer carries its own average wattage, purchase price, expected lifetime hours, maintenance and failure rate, so a job priced on the resin printer is not priced like a job on the big enclosed one.
One switch removes VAT and adds the required note to the quote. With VAT on, tax lands on top of item price plus shipping, and the customer total is the anchor everything else is rounded to.
Guides
Seven guides on the arithmetic behind a print price, each with the numbers worked out.
The seven cost lines, the four-step method, and the three sums most calculators get wrong.
Spool price to price per gram, waste allowance, and what a 42 g print actually costs in plastic.
Average watts for twelve popular printers, and why power is almost never your biggest line.
What PrusaSlicer, Bambu Studio, OrcaSlicer and Cura write into a file, and what Infill reads back out.
Multi-color prints throw filament away at every change. Here is how to put a number on it.
Marketplace fees come off the selling price, not off your cost. That changes the arithmetic.
What a phone app adds to a browser calculator: failures, purge, marketplace fees and saved quotes.
FAQ
Yes. The calculator is free in full: the cost breakdown, the selling price, the customer presets, sharing, the slicer import, the spool inventory and the multi-filament model. Infill shows no advertising at all. Infill Pro is a single purchase and never a subscription. It lifts the profile and history limits and adds marketplace fees, VAT on the quote and CSV export.
Two printer profiles, six material profiles and ten saved quotes. Nothing in the arithmetic is held back, and no feature is time limited.
A .gcode file from PrusaSlicer, Bambu Studio, OrcaSlicer or Cura, and a sliced .3mf project from Bambu Studio or OrcaSlicer. Grams and print time fill themselves in. A sample file ships with the app, so you can try the import without a slicer to hand.
A 50 percent margin means the price is twice your cost. A 50 percent markup means 1.5 times your cost. Infill keeps the two apart and labels which one you picked, because calculators that multiply by one plus the margin and call it margin quote a third under.
Yes. Every filament in the print is charged at its own rate, and the material flushed at each color change gets its own line instead of being buried in a waste percentage.
No. There is no account, no cloud and no backend. There are no advertising SDKs, no analytics and no tracking of any kind. Your prints, prices and customers never leave your device.
Printer profiles with average wattages for Bambu Lab, Prusa, Creality, Elegoo and Anycubic machines, plus a generic profile. Every figure is editable, and you can add your own.
Yes. Infill runs on iPhone and iPad, in English and German, on iOS 17.0 or later.
Infill is free on the App Store, shows no advertising, and works with no signal in the workshop.
Free on the App Store. iOS 17.0 or later, iPhone and iPad. No account, no advertising, no tracking.
Infill