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PORTFOLIO ONESPARK BLOG ABOUT FAQ BOOK A SCOPE CALL

For founders and businesses that need to move fast.

CUSTOM SOFTWARE,
97% FASTER.

You have a deadline. We guarantee it. Fixed price. Fixed delivery date. 5% back for every business day we're late — up to the full project value.

30+ Projects Shipped · 27-Hour Average Build Time · 5% Refund Per Day Late · HIPAA · SOC 2 · GDPR

You already know this story.

The Agency That Missed Your Deadline

They quoted four months. You needed six weeks. They delivered excuses. You showed up to your meeting with a Figma mockup instead of a live product. Never again.

The Dev Team That Didn't Deliver

They said yes to everything in the sales call. Wrong product. Wrong features. Wrong architecture. Months of back and forth and what they handed over wasn't what you asked for. You paid for it anyway.

The Team That Can't Keep Up

Your engineers are buried in the core product. This feature can't wait three months for them to surface. Hiring takes six months and burns runway you don't have. You're stuck.

The Build-It-Yourself Trap

You tried Lovable, Bolt, or Cursor. The demo looked great. Production broke. You lost eight weeks and you're starting over with a deadline that didn't move.

No more guessing. Your deadline — guaranteed.

THE ONECHAIR DIFFERENCE

BUILT IN WEEKS. NOT MONTHS.

WingmanAI: 33 hours — replaced their entire frontend & AI. WellChild: 27 hours — HIPAA-compliant platform their last agency quoted 2.5 months for. We don't estimate in sprints. We deliver what is needed in full.

YOUR BUILD, LIVE ON DAY 1

From the moment we start, your project lives on a staging URL. See it. Click it. Share it with your investors, your board, your co-founder. Every update visible in real time.

FIXED PRICE

Fixed price. Fixed delivery date. Both in your signed contract. Miss the date — 5% of the project price back for every business day late, up to the full project value.

ENTERPRISE QUALITY. STARTUP SPEED.

Senior engineers review every line. HIPAA, SOC 2, GDPR, OWASP-ready. Pen-tested. Clean, typed, documented code you own outright. Speed is the system — not a shortcut.

OneSpark

The Engine Behind Every Build

OneSpark runs 85+ specialized AI agents in parallel — scoping, building, and testing your project all at once, not one step at a time. It's built on over 20 years of enterprise delivery experience, the same process behind Fortune 500 and Global 1000 applications, rebuilt from the ground up with AI at its core. Senior engineers review every output before it reaches you. That's how we ship in weeks what everyone else quotes in months.

HOW IT WORKS

FROM SCOPE TO LAUNCH

No bloated timelines. No paying for promises. OneSpark condenses the entire development lifecycle so you see results from day one. Pay for results, not time.

01

BOOK A SCOPE CALL

Fill out a short form. We review everything before the call so we come prepared. No fluff, no pitch. We're already thinking about your build before you dial in.

02

30-MINUTE SCOPE CALL

You tell us what needs to be built and when it needs to ship. We work through your project outline together — features, users, platform, integrations, compliance. You leave knowing your timeline, the prototype process, and what the guarantee looks like.

03

WORKING PROOF & FIXED PROPOSAL

Before you commit a dollar, we take your initial scope and feed it into OneSpark. OneSpark produces an early working version of your product along with a fixed-price proposal. See it. Click it. Share the link. Then decide.

04

REQUIREMENTS WORKSHOP

Once you're in, we run a 2–4 hour deep dive to lock in every requirement. Edge cases. Integrations. User flows. The prototype gets refined. The scope gets locked. The clock starts.

05

FULL BUILD — GUARANTEED

We execute the project. See progress every day with a live staging URL from day one. Fixed price. Fixed delivery date. 5% back per business day if we're late.

Ready to hit your deadline?

BOOK A SCOPE CALL

WHAT WE BUILD

Three ways we work with you

CUSTOM SOFTWARE

For teams who need to build fast

New builds, rescue builds, new features, internal tools, compliance-driven software. You know what needs to be built. We come in, own the sprint, and guarantee delivery.

  • Senior engineering on every project
  • Working prototype before you commit
  • Live staging from day 2
  • Daily build updates
  • Full source code and documentation
  • 5% per day late refund guarantee
  • 100% requirements matched

MVP BUILD

You have the vision. You need something real.

Not a mockup. Not a prototype. Production-ready, revenue-generating software in front of your investors and users — built fast, owned by you.

  • Full MVP from scratch
  • Working prototype before you commit
  • Investor-ready staging from day 2
  • Fixed price, fixed delivery date
  • Built to scale when you do
  • Full code ownership
  • 5% per day late refund guarantee

TECHNICAL PARTNERSHIP

For products that shipped and need to keep moving

Your product shipped. Now it needs an engine to keep it moving. Dedicated team, continuous development, powered by OneSpark.

  • Dedicated retainer team
  • Continuous feature shipping
  • Ongoing architecture & scaling
  • Live staging always
  • Priority capacity & weekly syncs
Starts at $16K

Also offered:

Software Audit — $3,500 flat · 10 findings guaranteed Prototype — $5,000 · clickable product in 5 days

OUR WORK

WingmanAI
WINGMAN AI Built in 33 hours · Replaced full dev team · Product-market fit in 1/10th the normal time AI Sales
WellChild
WELLCHILD Built in 27 hours · Previous agency quoted 2.5 months · Zero compliance issues HIPAA Healthcare
Cody Yellowstone
CODY YELLOWSTONE Built in 12 hours · Zero prior codebase · Delivered before launch deadline Travel / AI
Resource Center
RESOURCE CENTER Built in 30 hours · 8-month ROI · Cell & gene therapy platform Healthcare
Givunity
GIVUNITY 400% increase in active users post-launch · Volunteer management platform Non-Profit
HeyEJ
HEYEJ Complex compliance requirements · On time · On budget Aviation
Asset Management
ASSET MANAGEMENT University asset tracking with QR & live maps · On time · On budget · Fully documented Education
AND MORE... Let's discuss your project GET IN TOUCH →
8 Month ROI (Resource Center)
27-Hour Average MVP Delivery
400% Increase in Active Users (Givunity)
Full Team Replaced (WingmanAI)

DON'T TAKE OUR WORD FOR IT

Built in 33 hours · Full dev team replaced
"I would recommend OneChair because it's more cost-efficient and you can get to product-market fit in 1/10th of the time. The speed and ability to push features — that's the biggest benefit."
Arjun Banerjee
Arjun Banerjee
Founder, WingmanAI
LinkedIn
Built in 27 hours · Previous agency quoted 2.5 months
"That is literally my platform. After trying it, I realized how much faster I could test and roll out new features. Having a way to build and validate features quickly is a total game-changer."
Michelle McGuinness
Michelle McGuinness
Founder & CEO, WellChild
LinkedIn
Delivered in 12 hours
"I have never seen a company so dedicated and capable. I was amazed at the quality and speed they were able to output working mockups and a final product."
Katrina Southern
Katrina Southern
Cody Yellowstone
LinkedIn

HOW WE COMPARE

Traditional Agency AI ToolsLovable, Replit, Bolt OneChair.dev
Timeline 3–6 months Hours, then weeks fixing Days to weeks
Real Cost $125K–$250K+ $25/mo + your time + broken code Fraction of agency cost
Who Builds You manage a team You become the developer We handle everything
Code Quality Varies Unmaintainable Clean, typed, documented
Delivery Promise Estimates and hope You're on your own 5% refund per day late
Prototype Before You Pay Never No Always
Visibility Status emails You build it Live staging from day 2
After Launch Expensive change orders You're on your own Retainer available
Ownership You own it Platform-dependent Full code ownership
Built to meet compliance standards: OWASP HIPAA SOC 2 GDPR PCI DSS WCAG ISO 27001 ADA

Not the Right Fit

We work with founders and businesses who are ready to move. If any of these sound like you — we're not your team right now:

Come back when you're ready. We'll be here — and we'll be fast.

Enterprise quality.

Startup speed.

FREQUENTLY ASKED QUESTIONS

OneSpark coordinates 85+ specialized AI agents handling different parts of your project simultaneously — not sequentially. Design, backend, frontend, and testing run in parallel. A senior engineer oversees every project. What takes a traditional agency months, we deliver in weeks. That's not a claim. It's a track record.

Most builds ship in 2–8 weeks. WellChild shipped in 27 working hours. WingmanAI in 33. Your timeline depends on scope. You'll have a clear estimate within 48 hours of your scope call.

5% of the project price back for every business day late — up to the full project value. The delivery date is in your signed contract. We built a system that doesn't miss.

We review your form beforehand so we come prepared. We work through your project together — what needs to be built, when it needs to ship, what the guarantee looks like.

After the scope call, we build a working version of your product before you commit to anything. You see it, click it, share it. Only then do you decide. No other dev agency does this.

We run a 2–4 hour requirements workshop to lock in every detail. The prototype gets refined. The full build starts — fixed price, fixed date, live staging from day two.

Every project is scoped and priced based on your requirements and timeline. Tighter deadlines require dedicated resources. You'll have a fixed price within 48 hours of your scope call — before you commit a dollar.

100%. Every line, full documentation, complete access. You're never locked in.

Most clients continue with a Technical Partnership retainer — dedicated team, continuous development, ongoing feature shipping.

Ready to Hit Your Deadline?

Fill out the form. We review every submission before the call and pre-fill your project outline so you don't repeat yourself. Come ready to move.

For builds under $15K, our Prototype service is the right fit. We'll redirect you after submission.

DELIVERY TIME
TECH STACK