Custom software is an app built for one business’s own work, where a product sold to thousands would make you work around it. We build it for companies that run on spreadsheets, retyping and phone calls.
So far that has meant an order desk for our own eBay parts business, shop software for powder coating shops, a CRM that finds its own leads and plant software for a solar-panel recycler in Hungary. Below is what each one does, what custom software costs with us, and how a build runs.
Each of these came from a business we built for.
At a solar-panel recycler in Hungary, one truck of old panels went onto a weighing slip, into a spreadsheet for stock and again into the national waste register. Stock on paper and stock in the yard drifted apart.
For our own eBay parts business we tried the shipping tools you can rent by the month. They print labels well, and none of them knew about Hungarian clearance forms or számlázz.hu, so the customs text was still written by hand.
A project board has no idea what an oven run is. Powder coating shops batch jobs by color so one oven load covers every part going gloss black that week, and generic tools could not help them do it.
In a typical coating shop one person remembers which rims belong to whom. When a customer calls, somebody goes digging through the pile by the till.
Three of these run our own businesses, so we live with every rough edge. Tap a screen to see it full size.
Our own industrial parts business sells servo drives and PLC modules to engineers abroad. Invent brings each eBay order in with the address checked, puts FedEx, GLS, DPD and UPS rates side by side, drafts the customs text and issues the invoice through számlázz.hu once a person approves it. The packer works from a phone.
The whole story
Rainbow Flex runs a coating job from the first inquiry to QR-labelled batches, the workstation boards, inspection and the invoice. An AI reader turns plain emails into proper inquiries; our first partner shop taught it that “a set of wheels” means four.
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Eclipse went live in October 2026. The weighbridge runs on a phone with buttons sized for gloves, every batch is checked for mass balance within 2 percent, and the calendar of returns and permits shows what is overdue first.
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The books sold only through a marketplace that took a commission and kept the buyers. Now one catalog sits behind kakapopress.com and stays in step with the marketplace, and the bookseller catalogs from phone photos that a vision model reads.
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Iron Rainbow needed coating shops as partners and had no reliable list of them. We searched every US city with more than 10,000 people, had each shop’s website read to see whether it does powder coating, and built the call queue the team now works from.
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ICE reads a used part’s nameplate from phone photos and drafts the eBay listing. Staff say the quantity, the condition and the box out loud, a person sets the price and presses List, and Invent learns which box the part went into.
The whole storyThe software you get talks to your shop, your marketplaces, your carriers and your invoicing. These are the systems we connect.
These are our own prices from the services page. Before any build we give a fixed price for each milestone, and you can stop after any of them and keep what was built.
Custom is not always the right call. If a handful of orders a week go out and nobody but the owner packs, an off-the-shelf tool at around $120 a month fits better than anything we would build.
With us, planning costs $3,900 (€3,500) for a 2-Week Blueprint Sprint, credited to the build. A first release of an app or platform starts at $32,000 (€29,000), paid per milestone, and a single AI workflow starts at $7,500 (€6,800). The price depends on how many kinds of users, outside services and old data the software has to handle.
The Blueprint takes 2 weeks. A first release takes 8 weeks or more, delivered in milestones with a working version on a live link every week. Smaller fixed packages, like the eBay Lister, go live in 2 to 3 weeks.
You do. The repository, the accounts and the documentation are in your name from the first day, so nothing depends on us staying.
Usually, yes. We connect Shopify, WordPress and WooCommerce, eBay, Etsy and Jófogás, QuickBooks, Stripe, PayPal, Revolut and Wise, UPS, USPS, FedEx, DHL and TNT, the main Hungarian carriers, Számlázz.hu, Billingo and NAV Online Számla. See API integration for how we connect them.
When a job repeats every day and no rented tool covers it, often yes. When a handful of orders a week go out and nobody but the owner packs, an off-the-shelf tool at around $120 a month fits better, and we say so on the call.
None. Bespoke is the British word for the same thing: software built for one business’s own work.
Thirty minutes with us. You describe the work your team repeats every day; we tell you what we would build, how long it takes and what it costs, or which ready-made tool would do.