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An independent software studio. Field notes, autumn 2026.

Small, useful software, made with care.

We make our own small tools, and we take on a few client projects each season: websites, web apps and the quiet tools that keep a business running.

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Opens yourperfectprompt.com. The Free plan needs no card.

Plate I. The ridge above the workbench.

Ink and halftone drawing of a ridge with pines, a low sun, a sword fern, king bolete mushrooms and a trail cairn of stacked stones
1. Trail cairn. A stack of stones left so the next person knows they're on the path. Our name comes from it.2. Sword fern, Polystichum munitum.3. King bolete, Boletus edulis.

Our own apps

Three things we make for ourselves, labeled honestly: what's live, what's still on the bench, and what's in a small beta. We'd rather ship one thing that works than five that don't.

No. 1yourperfectprompt.com
Ink drawing of a recipe card and a pencil
Live

Your Perfect Prompt

Better prompts for any AI tool. Say what you need in plain words, like a reply to a review or a flyer for your shop, and get clear instructions to paste into ChatGPT, Gemini, Claude or Copilot.

Try YPP free
Our flagship. Made for people who are new to AI and for small-business owners.
No. 2still on the bench
Ink drawing of a guitar headstock with a sprig of fern
Coming soon

Frets & Strings

A workbook for learning to read the guitar neck. Eight lessons, a practice fretboard, and note checking that stays on your device.

Get a note when it's ready
Not open to the public yet. No download, no app store.
No. 3myquoin.io
Ink drawing of dressed corner stones in a wall
Controlled beta

Quoin

Know which work made money. Project profitability and reviewed reports for owner-led, project-heavy businesses.

Visit myquoin.io
A quoin is a cornerstone: the dressed block that keeps a wall square.

Plate II.

What we build for others

We build websites and apps for a small number of clients. Our own apps are the proof: see them above.

  1. Ink drawing of a ridge with pines under a low sun

    1. Websites

    Fast, plain, easy to update.

    Studio sites, landing pages and small shops. Built to load quickly, read well on a phone, and be changed by you without calling us.

  2. Ink drawing of a cairn of five stacked stones

    2. Web apps and internal tools

    The software your team actually uses.

    Dashboards, client portals, booking and intake tools, and the data tools that pull a business's numbers into one place.

  3. Ink drawing of two sword fern fronds

    3. AI features and automation

    Useful, not novelty.

    Drafting, sorting and summarizing built into the tools you already have, with a person checking the work where it matters.

  4. Ink drawing of three king bolete mushrooms in grass

    4. Launch support

    Hosting, domains, the last ten percent.

    Domains, hosting, sign-in, payments and email set up properly, then looked after once it's live.

On a client project

How we work

  1. TalkA short call or a few emails about what you need.
  2. PlanWe agree on what to build first, and what can wait.
  3. Build in the openYou see working pieces as we go, not a big reveal.
  4. Launch and look after itWe ship it, hand over the keys, and keep it running if you want us to.

A page in the notebook

Start a project

Tell us what you're building. We read every note ourselves.

Rather email? Write to principal@piostack.com.

A few sentences is plenty. What it is, who it's for, and anything that already exists.

We use your details only to reply about your project.

Questions people ask

Questions

Questions about Your Perfect Prompt? More answers on the YPP help page.

Do you take on small projects?

Yes. Most of our work is small on purpose. Tell us what you have in mind and we'll say plainly whether we're a good fit.

Is there a free way to try it?

Yes. The Free plan needs no card. Current plans are listed on the YPP pricing page.

Which AI tools does it work with?

Any tool you type into: ChatGPT, Gemini, Claude, Copilot, Perplexity and others. You copy the prompt and paste it where you already work.

Do I need to know anything about AI?

No. YPP asks a few plain questions about what you need and who it's for, then writes the instructions.

Who's behind Pioneer Stack?

Pioneer Stack LLC, a small independent software studio. We'd rather make three good tools than thirty quick ones, and we build for a few clients each season.

Pioneer Stack

Small, useful software, made with care. Our own apps, and websites and apps for a few clients.

We only store your address and when you signed up. No sharing, and you can ask us to remove it any time.

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  • Frets & Strings (Coming soon)
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