About
What MakerProof is
A record of the commercial licences you have bought, and what your prints actually cost to make. It is for people who sell their prints, and it does both in one account.
The two halves
Licences. When you buy the right to sell prints of someone else's model, the permission sits in an email, a Patreon tier or a line on a product page — and the terms can change after you agreed to them. MakerProof keeps the record: what you bought, from whom, when, the proof of purchase, and the terms as they read on the day. It reminds you before a licence lapses, because selling on a licence that has run out without you noticing is the mistake that costs money.
Costs. Filament is the smallest part of what a print costs. MakerProof works out the rest from prints you log — waste, failures, machine time and depreciation — so the cost you set prices from includes the prints that failed.
What it doesn't do
It is not an order book. There is no customer, no sales channel, no invoice, no dispatch status and no revenue report — and that is on purpose. Nothing else keeps licence records like this, and there are already plenty of good tools for costs and orders. If you need revenue by sales channel, use the reports in Etsy, Shopify or Stripe.
It also does not calculate tax, and it is not legal advice. It keeps the records and does the sums. What they mean for you is between you, the designer whose model you sold, and your own accountant.
Who makes it
MakerProof is built and run in the United Kingdom by one person. It is a small product that does a few things well, and it is paid for by the people who use it rather than by advertising — there are no ads, no trackers and no third-party scripts on any page of this site.
There is another MakerProof
If you were looking for revenue-verification badges for software makers, you want makerproof.net, which is a different product by a different developer and nothing to do with this one. This MakerProof is makerproof.app, and it is about 3D printing: commercial licences, filament, and what a print costs.
Getting in touch
Questions, corrections and bug reports all go to the same place: the contact page. If something on this site is wrong — particularly on the licence archive, where the platforms change things without telling anybody — saying so is genuinely useful.