own product · 02 · ios

stocksmith.

from raw material to listing, on your iphone or ipad. stock, cost price and production in one system instead of three spreadsheets. works offline, syncs through your own icloud.

in the app store. since q2 2026
ios. iphone and ipad. android coming later.
€5.99 per year

it's not the spreadsheet.
it's not gut feeling.
it's knowing what something actually costs.

the problem

makers of 3D-printed products guess their cost price. what is still on the shelf, what that spool actually cost, which listing still has the old price: it sits scattered across notes, sheets, and memory.

the symptom

"i thought i was making money on that." "that filament cost more than i figured." a product on etsy priced too low, sold a hundred times over.

what stocksmith does

your materials with stock and purchase price, your products with a recipe underneath. the cost price comes out, production writes down the stock, and you can see which listing no longer matches.

four modules

material. cost price.
forge. listings.

four things, no more. a tool that does too much gets used by no one: a maker in the workshop doesn't need an erp. no bookkeeping, no order handling.

01 · module

materials

filament, parts and packaging, each with stock and purchase price. stocksmith works out the unit price itself. when something runs low you get a nudge before you go looking for it.

  • · filament with type, colour, diameter and weight per spool
  • · magnets, screws and packaging too
  • · low-stock warning
02 · module

products & cost price

every product has a recipe underneath: which materials, how much. the cost price follows from current material prices. add margin as a percentage or a fixed amount, and you get a suggested price you are free to override.

  • · bill of materials per product
  • · margin as percentage or fixed amount
  • · one material price up, everything recalculated
03 · module

forge

log a production run and the rest follows: material comes off the stock, product stock goes up, and if there is not enough material you get a warning instead of a surprise.

  • · stock updated automatically
  • · warning when material runs short
  • · production history with daily and weekly figures
04 · module

listings

your sales listings per platform in one place, each with a sync status. change a price and you see straight away which listing lags behind. copy text and price with one tap into etsy, shopify or bol.

  • · sync status: up to date or out of sync
  • · text and price copied with one tap
  • · stocksmith posts nothing itself, you stay in control
who it's for

four kinds of makers
with this problem.

hobbyist going pro

first real orders, no idea what to charge. stocksmith puts you on solid ground.

established etsy seller

dozens of products, manual pricing. one material price change now updates everything.

small-batch producer

running batches, tracking orders, watching margins. forge keeps the overview.

multi-channel seller

same product on etsy and bol. one place to see which listing still has the old price.

niet voor: large manufacturers, injection moulding operations, or businesses with an existing erp. stocksmith does no bookkeeping and no order handling: it is for the maker still running on gut feeling and spreadsheets.
now available

now in the app store.

stocksmith forge is available on the app store. download it on your iphone or ipad, in dutch, english, german, french or spanish.

faq

about stocksmith.

question not in the list? mail me at hello@whappa.com.

01 which nfc stickers can i use to label my spools? +
three types that work well:

ntag213: the standard. 144 bytes of memory, cheap, perfect for storing a url or simple command.
ntag215: most memory for typical use. 504 bytes, fully supported on iphone.
ntag216: the most storage of the three (888 bytes). useful if you need to write large amounts of data to the tag.

ntag213 is the smartest choice for almost everyone.
02 can an ipad read nfc tags? +
no. apple has restricted nfc reading to iphone. ipad has no nfc chip.
03 can i buy stocksmith once instead of subscribing? +
yes. there are two one-time in-app purchases: stocksmith pro gives lifetime access to all features, and lifetime nfc unlocks the nfc functionality permanently. both are optional alongside the subscription.
04 what can i do with the free version? +
everything, but with limits: a maximum of 25 materials, 15 spools, 10 products, and 10 listings. enough to get started and see if stocksmith fits your workflow. for serious use you will want pro.
05 can i share my data across devices? +
yes. stocksmith uses cloudkit to store your data. everything syncs automatically across all your apple devices via your own icloud account.
06 how many languages does the app support? +
five. stocksmith is fully translated into dutch, english, german, french, and spanish, so you can manage your materials in your own language, wherever you work.
something like stocksmith?

tell me what's next.