Part-Time Rocket

Your operation runs on a spreadsheet. See it as real software in five days.

Free working prototype, built from your actual process. If it’s not obviously better than what you have now, you owe us nothing.

01/The problem

You know exactly which file we mean

The one that runs dispatch. Or pricing. Or the production schedule. Forty tabs, a decade of formulas, and one person who actually understands it.

It works — until someone’s out sick, or a formula breaks silently, or a new hire takes four months to become useful. You’ve thought about replacing it. Every quote came back at six figures and nine months, so you didn’t.

ORD_IDDATECUSTSKUQTYUNITEXTDISC%NETSHIPSTATCHKADJ_v2FLAG211212213214215216217218219220221222223224225226227228229230231232233234235236A-8821406/10/17C937SKU-81233378.242581.762581.76GRNDHOLDY0.29A-8822411/08/24C849SKU-7722357.28254.72254.72AIROKY0.54*A-8822904/19/22C983SKU-8184919.15172.37172.37AIROKY-0.47A-8823506/25/25C689SKU-8171478.16312.636%293.87GRNDHOLDY1.83A-8824411/23/25C524SKU-36974776.413591.1511%3196.12AIROKY-0.48A-8825112/14/21C532SKU-3314686.40518.4012%456.19GRNDOKY0.06A-8826006/13/24C624SKU-11592819.41543.53543.53GRNDOKn-0.54*A-8826502/03/23C539SKU-57011657.91926.49#REF!GRNDHOLDn0.46A-8827009/06/24C543SKU-71031786.911477.531477.53GRNDOKY0.36*A-8827811/22/21C112SKU-0245162.9162.9162.91GRNDOKY-1.20A-8828612/05/22C445SKU-60324840.141926.911926.91GRNDBACKY-1.65A-8829412/03/23C351SKU-1015746.72327.04327.04GRNDOKY-1.34A-8829905/06/19C408SKU-54522277.851712.631712.63GRNDOKY-0.10A-8830702/22/19C752SKU-24151451.14715.91715.91GRNDOKY0.47A-8831304/08/23C636SKU-62804135.231444.3614%1242.15GRNDOKY-1.25A-8832002/03/17C573SKU-54071024.58245.84245.84GRNDOKn-0.53A-8832801/01/23C786SKU-00503863.222402.342402.34GRNDOKn0.24A-8833305/11/22C133SKU-04334429.371292.288%1188.90AIRBACKY-1.31A-8834105/05/23C388SKU-70132689.062315.477%2153.38AIROKn-1.83A-8835011/03/25C113SKU-68883332.981088.391088.39GRNDBACKY-0.31A-8835403/27/20C600SKU-72724150.352064.212064.21GRNDHOLDY-1.03A-8836312/09/17C306SKU-1248781.57570.975%542.42AIROKY1.34A-8836905/14/23C763SKU-44771862.111117.931117.93GRNDOKY-0.44A-8837601/22/23C912SKU-3063168.34133.44133.44GRNDOKY1.41A-8838207/17/21C914SKU-76881384.301095.931095.93GRNDOKY0.83A-8839006/06/23C163SKU-44603774.222746.1211%2444.05GRNDOKY1.44G213=IF(ISERROR(VLOOKUP(D213,'v3_FINAL'!$B$2:$M$4407,7,0)),H213*0.97,K213+ADJ_v2)FY17FY18reconv2v3_FINALlookuppivotDO NOTSheet34miscQ3 fixoldTab 34 of 41This formula was lastedited in 2019Nobody knows whatthis column doesTwo people have thisopen right now#REF!

02/Proof

Here’s one running on a shop floor right now

We built a production system for a furniture manufacturer — planning, inventory, and floor tracking. It replaced a spreadsheet, a whiteboard, a stack of paper travellers, and one rep who knew which orders were actually urgent.

In the first month, on-time delivery went from around 60% to 87%. Throughput rose 28%. Not because anyone worked faster — because the guessing stopped.

0%25%50%75%100%Before60%After87%
  • 87%

    orders delivered on time, up from ~60%

  • 28%

    throughput increase, first month

  • 14%

    improvement in customer satisfaction

You can click into the system yourself.

See the manufacturing system →

03/How it works

Five days, not nine months

  1. 1

    Fifty minutes on a call

    You walk us through the process. We ask about the parts that annoy you. No discovery phase, no requirements document, no invoice.

  2. 2

    Five days

    We build a working version. Not a mockup — real software, running in a browser, built from your process and what you said matters most.

  3. 3

    You decide

    Like it, we build the production version at a fixed price agreed upfront. Don’t like it, we shake hands and you keep the prototype.

04/Ownership

No licences. No seats. No renewal email in eighteen months.

When the build is done, the code is yours. The repository, the documentation, the deployment. If you want to hire someone to extend it in three years, you can. If you want to bring it in-house tomorrow, you can.

Your only ongoing cost is hosting, which for most of what we build runs about what you’d pay for a couple of phone lines.

$0$50k$100k$150k$200k$250k01224364860monthsMonth 14Per-seat SaaS~$245kCustom build~$57k
Illustrative. Your numbers depend on seats, vendor, and scope — we’ll run yours on the call.

05/The team

A senior bench, sized to the job

Fifteen-plus senior engineers, all with ten-plus years behind them, all people we’ve delivered with before. We pull the right people for the work rather than staffing whoever’s free.

Every project runs with two senior delivery managers — one owning technical direction, one owning delivery. That means proper governance from day one, not a lead developer doubling as a project manager at the end of a long week.

No junior developers learning on your project. No account managers relaying messages.

  • 15+

    senior engineers

  • 10+

    years average experience

  • 2

    senior delivery managers per project

06/Technologies

What we build with

We pick the stack that fits the job and the systems you already run. Most of what we build is React and TypeScript on the front, with the back end and integrations shaped by what you have in place.

  • React
  • TypeScript
  • JavaScript
  • Node
  • Salesforce
  • Shopify
  • Postgres
  • Python
  • Azure

07/Why it’s free

The obvious question

Because explaining that we’re fast is worthless, and showing you is easy. Five days of our time is a cheaper way to earn a contract than three months of proposals and reference calls.

We’re selective about who gets one — we take on a handful at a time, and we only start when we’re confident there’s a real project on the other side. If we don’t think we can build something you’ll want, we’ll say so on the first call rather than waste a week of both our time.

08/What we build

Internal tools, mostly

Production planning and floor tracking. Dispatch and scheduling boards. Quoting and pricing tools. Inventory allocation. Order intake from PDFs and email. Commission calculators. Customer portals.

Spreadsheets are usually where it starts, but the same applies to anything held together by a shared drive and institutional memory — manual processes, tools your ERP doesn’t cover, systems that don’t talk to each other.

We don’t build consumer apps, marketplaces, or anything with a mobile app store listing. We build the thing your team opens at 7am.

09/FAQ

How can you build in five days what agencies quote nine months for?

Because we use AI-assisted development for the parts that are mechanical, and because we're building one tool rather than a platform. The nine-month quote usually includes six months of process. We skip that and show you working software instead.

What happens when it breaks?

Every build includes a warranty period where we fix anything that's our fault, free. After that you can buy a support retainer or take it in-house — the code is yours either way, and we document it so someone else can pick it up.

What does the full build cost?

Most projects land between $30,000 and $60,000, fixed price, agreed before we start. You'll have a number before you commit to anything, and the prototype comes first regardless.

Who actually works on my project?

A small team pulled from our senior bench, matched to what the work needs, with two senior delivery managers running it. You'll know who they are before we start.

Where are you based?

Europe, working US hours.

Do we have to replace the spreadsheet entirely?

No. A lot of what we build reads from or writes back to what you already have. The goal is to remove the fragile part, not to make your team relearn everything.

10/Booking

Fifty minutes, and you’ll know whether this is worth your time.

Bring the file. We’ll tell you on the call whether we can build it.

Prefer to book directly? Open the booking page on Cal.com