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Sprint10

The 10-Day Build

Stop losing hours, jobs and sleep to a spreadsheet. I build the system that runs it for you. Live in 10 days.

Nothing falls through the cracks, nobody retypes anything twice, and you get your evenings back. The software is simply how we get there. Fixed price agreed before I start. You don’t pay the balance until it does the job. And you don’t have to take my word for any of it: a full system I built is live right now, and you can log in and use it in the next two minutes.

20 minutes, free, no pitch. You leave with a plan and an exact price. Both are yours to keep even if you never hire me.

  • Fixed price
  • You own everything
  • No balance until it works

01 · The problem

Your business outgrew the spreadsheet months ago.

The shared sheet someone overwrites. The request that vanished into a WhatsApp thread. The tool you pay for every month that does 60% of what you need. The job only one person knows how to do, and they’re on holiday.

Off-the-shelf doesn’t fit how you work. An agency wants £20k and three months. A cheap freelancer takes the deposit and disappears.

There’s a better option for a business your size.

02 · What I build

Custom software for small businesses, in plain English.

Most owners can describe the bottleneck but not the software that fixes it. That's my job, not yours. Here are the four fixes I build most.

Internal tools & dashboards

Stop running your business on messy spreadsheets. One dashboard that runs your daily workflow: jobs, quotes, stock, rotas. It never breaks when two people edit at once.

→ Hours back, every week

Client portals

Give your customers a secure login to view invoices, track job progress, or raise requests without ringing you. You stop being the switchboard.

→ Fewer interruptions, happier clients

High-conversion websites

A fast, modern website built to turn your local traffic into booked jobs and paying leads. Not a brochure that sits there.

→ Visitors become enquiries

MVPs: test a product idea

Got a software idea for your industry? I build the first working version fast, so you can put it in front of real customers and start earning while others are still pitching slide decks.

→ Idea to market in days, not months

Not sure which one you need? That’s exactly what the call is for. Describe the bottleneck and I’ll tell you what I’d build. If off-the-shelf software already solves it, I’ll say so.

Describe your bottleneck →

03 · The offer

The 10-Day Build

A system built around how your business actually works, live in ten working days. You stop firefighting and get your week back.

What you get

  • A working system on day ten. The real software your team logs into, not a prototype or a slide deck.
  • Every call made for you. I make 3000 decisions so you only have to make about 3. No spec to write, no jargon to learn.
  • Yours outright. Deployed in accounts in your name, with a plain-English guide. Code, hosting, everything.
  • One person accountable. You work directly with the engineer building it, start to finish.

Founding-client rate · 3 spots left

Standard build£2,000
You pay£1,000

That’s 50% off. You save £1,000. Bigger scope? Same deal: half of whatever your fixed quote is.

In exchange, you let me publish a detailed case study of your build. The price is fixed and agreed in writing before I start. When the 3 spots are gone, they’re gone.

After launch, two ways to run it. Your choice.

Self-host, free

Take the code and the plain-English guides and run it yourself. You own 100% of the IP and can hand it to any developer, any time.

Managed, £50/month

Don’t want to think about servers? I host it, keep it updated, and fix anything that breaks. Cancel any time.

You own the code and the IP either way. Managed hosting is a convenience, never lock-in.

The whole point

“I make 3000 decisions so you only have to make about 3.”

Kiran Chahal · Sprint10 Studios

Your 3

What hurts most. What v1 has to do. Yes or no.

My 3000

The design, the database, the edge cases, the hosting, the backups, the security. Every decision that usually turns “get some software built” into a second job.

Make decision #1: book the call

Free. 20 minutes. No pressure, just a plan.

04 · How it works

From first call to launch, no mystery.

01

Book a 20-minute call.

No pitch. Tell me what’s slowing you down and I’ll tell you honestly whether a 10-day build fits.

02

Approve your spec and fixed price.

I write up exactly what I’ll build: scope, price, what’s in v1 and what isn’t. You approve it, or we revise until it’s right.

03

A 50% deposit starts the clock.

The price is fixed and agreed in writing first. The balance isn’t due until it works.

04

Ten days, built in the open.

Frequent updates the whole way, so you always know where it’s at. No black box, no radio silence.

05

Launch. It’s yours.

Live in accounts you own, with a plain-English guide. Then self-host it free, or I run it for you on a managed plan.

The 10-Day Build · Day 1 → 10

The 10 days

  1. Day 1Phase 1 / 5

    Discovery

    A focused call to map exactly how your business works. We agree what v1 does, and deliberately what it doesn’t.

  2. Days 2–3Phase 2 / 5

    The foundation

    I design the data model: the invisible part that decides whether the system still works in two years.

  3. Days 4–7Phase 3 / 5

    The build

    The actual application. Your forms, your dashboard, your automation, built in parallel.

  4. Days 8–9Phase 4 / 5

    Polish and proof

    Testing, the details that make it feel finished, the user guide, production-ready.

  5. Day 10Phase 5 / 5

    Launch

    Live, in your hands, in accounts you own.

05 · Proof

Don’t imagine the result. Log into one I’ve already built.

Most agencies show you a slide deck and ask you to picture it. I built an entire company’s operations software end to end, so you can log in, use it, and read every line of its code before you spend a penny. No real client, nothing hidden. It’s a preview of your build, not a portfolio piece.

Before

I built the complete system a real property manager would need. Meet Oakwood: 3 staff, around 80 rental properties, maintenance requests arriving by email, text and WhatsApp, tracked in a shared spreadsheet that broke the moment two people edited it at once.

After

One public form for tenants. One dashboard for the team. Three automated emails. Nothing lost. The build itself took about three days. The 10-Day Build wraps that speed in discovery, your revisions, your accounts, and a proper launch.

The detail that matters

Property addresses are snapshotted onto each request, so correcting or removing a property later never quietly breaks the history of old jobs. That kind of decision doesn’t show up in a demo. It decides whether software survives contact with the real world.

Made-up details welcome.

06 · Why trust me

Don’t trust me. Verify me.

Use the actual software.

Both projects are live. Don’t take my word for it. Go click around.

Read the actual code.

Both are open source (MIT). You (or any developer you know) can inspect the quality yourself. Almost no one does this. I do.

You’re protected.

Fixed price. No balance until it works. You own 100% of the code and IP, in your name. Self-host it free, or let me run it for £50/month and cancel any time. The code stays yours. No lock-in.

You work directly with the engineer.

No account managers, no junior devs, no agency overhead. Senior judgment on every decision.

Photo of Kiran Chahal, founder of Sprint10 Studios
“Hi, I’m Kiran Chahal. I build the software, I talk to you directly, and I put my name and reputation on every project. No team to hide behind. That’s exactly the point.”

Kiran Chahal · Sprint10 Studios

07 · FAQ

Straight answers to the real questions.

  • How much does custom software cost for a small business?

    A 10-Day Build starts at £2,000, fixed. Right now the founding-client rate is 50% off the first builds, so a £2,000 build costs £1,000 (bigger scopes get the same 50% off their fixed quote). 3 spots left. The exact figure depends on how many moving parts your system needs. After a free 20-minute call you get one number in writing, and it never changes mid-build. No hourly billing, no surprises. For comparison, agencies typically quote five figures and months for the same class of system.

  • How long does it take to build an internal tool or custom web app?

    Ten working days from deposit to launch, to a scope agreed in writing first. Day 1 is discovery, days 2–3 the data model, days 4–7 the build, days 8–9 polish and testing, day 10 launch, live in accounts you own. The 20-minute call and your fixed quote happen before the clock starts, so first call to launch is typically two to three weeks.

  • Why do I need custom software instead of off-the-shelf tools?

    If an off-the-shelf tool genuinely fits how you work, use it. If that’s your situation I’ll say so on the call. Custom wins when you’re paying monthly for something that does 60% of the job, gluing subscriptions together with spreadsheets, or bending your process around someone else’s product. A custom system fits how your business actually runs, you own it outright, and there’s no per-seat fee creeping up every year.

  • What if it takes longer than 10 days?

    The scope is locked before we start. That’s what keeps it to ten days. If something on my end runs over, that’s on me, not your bill. The price is fixed regardless.

  • What happens after launch? Do I get support?

    Every build comes with a 30-day warranty. If something I built breaks in that window, I fix it free. After that you own the code and the accounts outright. Host it yourself and any developer can maintain it, or I can host, update and fix it for you on a managed plan (£50/month, cancel any time).

  • Do I own it? Am I locked in?

    You own 100% of it: code, accounts, IP, transferred into your name on your final payment. After launch you choose how to run it. Host it yourself for free and hand it to any developer tomorrow, or let me manage hosting, updates and fixes for £50/month. The managed plan is cancel-anytime and the code stays yours either way. No lock-in.

  • Who hosts it after launch, and what’s the managed plan?

    Your choice. Self-host and it costs you nothing beyond your own server bill. You have the code and the plain-English guides. Or I host it on my infrastructure and handle updates, backups and any fixes for £50/month, cancel any time. Either way you own the code and the IP. Managed is purely a “don’t think about servers” convenience.

  • Is there really a discount for early clients?

    Yes. The founding-client rate is 50% off the first builds, so a £2,000 build costs £1,000. In exchange, you let me publish a detailed case study I can show future clients. There are 3 spots left. Once they’re gone, it’s the standard price.

  • My project feels bigger than a 10-day build.

    Then we talk. Some things fit ten days, some don’t. I’ll tell you straight which yours is, and the options either way.

  • You built the demo in three days. Why do I need ten?

    The three days was the build. Your ten days also cover discovery (mapping how your business actually works), your feedback and revisions, real data, deployment into accounts in your name, and a proper handover. The speed is why all of that fits in ten days at this price. It’s not a reason to rush the parts that make it yours.

  • It’s built with AI. Does that mean lower quality?

    I use an AI-accelerated workflow to build faster. That’s how ten days is possible. The architecture, the judgment, and the quality bar are mine, and the code is open for you to inspect. Speed comes from better tools, not cut corners.

  • How do I know it’ll look good and work on mobile?

    You’re looking at the answer. This site and both demos are mine.

Book a call

Tell me what’s slowing your business down.

20 minutes, free, no pitch, no obligation. You describe the bottleneck. You leave knowing what I’d build, whether a 10-day build fits, and the fixed price. The plan is yours to keep, even if you take it to another developer.

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Founding-client rate: 50% off, so a £2,000 build is £1,000. In exchange for a public case study. 3 spots left.

I take a limited number of builds at a time. Currently booking October 2026.

  • Fixed price
  • You own everything
  • No balance until it works

Not ready yet?

Prefer to write it down first?

Not ready to book a call? Tell me what you’re dealing with and I’ll reply within 24 hours.

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