14-Day Market Validation

Stop spending 6 months on
ideas the market doesn't want.

We test your business idea with 500 real prospects using cold outreach and deliver a data-backed go/no-go report. You spend 15 minutes briefing us. We spend 2 weeks testing.

500
Real prospects contacted
14 days
Brief to verdict
15 min
Your time to brief us
Go / No-go
Clear recommendation
42%
of startups fail because there is no market need.
The #1 killer. Ahead of bad teams, timing, or execution. CB Insights
"
I spent 4 months building a SaaS product. Technically it worked great. The problem? Nobody wanted it. No users. No signups. Nothing.
r/SaaS
"
I had 47 "validated" ideas. Launched one. Zero paying users after 8 weeks. The problem was that I had no way to know whether people would actually pay.
r/SaaS
The real cost isn't cash. It's attention.
Every new idea costs your core business 20% in focus. Your time is worth €200 to €500/hr. A 6-month detour costs more than you think.
With distraction Without

From brief to verdict in 14 days

01

You brief us

Tell us the idea, who it's for, and what you'd charge. Takes 15 minutes. We take it from there.

Day 1
02

Find the right people

We search for real people who match your ideal customer. Job title, company size, industry, location. 500 verified contacts, scored against your criteria.

Days 1-3
03

Detect signals

We look for triggers that make outreach relevant right now. A new hire, a product launch, a funding round. Something that shows they might actually need what you're building.

Days 3-5
04

Reach out

Personalized emails that sound like a real person wrote them. No templates. No "dear sir/madam." We reference what we found about them and ask a simple question.

Days 5-12
05

You get the verdict

Market research, competitor gaps, positioning insights, prospect responses, and objection patterns. All in one report with a clear recommendation: go, or don't.

Day 14

Not a slide deck. Not a survey. Real data.

Go/No-Go Report
3 pages. Market context, response breakdown by segment, objection analysis, clear recommendation.
Prospect List
500 ICP-matched contacts. Verified emails. Enrichment data. Yours to keep, even on a no-go.
Response Classification
Every reply categorized: interested, curious, objecting, not interested. By segment.
ICP Research Package
Raw customer language, competitor gaps, pain points from real forums and reviews. Ready to use for your own marketing.
Landing Page + Campaign Metrics
Conversion-optimized page, deployed and live. Plus full transparency on open rates, reply rates, A/B results.

Business operators who want signal, not opinions.

Segment 01

Operators exploring new verticals

You run a profitable business and have an idea for a new market. Test it without distracting your team or bleeding 6 months of attention.

Segment 02

PE & holding company teams

You deploy capital across markets. Get demand data before committing to full diligence. A pre-diligence signal for less than a rounding error on the deal.

Segment 03

Agency owners pivoting to AI

Your model is under pressure. Know which new service line your market actually wants before you restructure around it.

Idea Sprint is built by the team behind Arnsbo Group.

22
Ventures founded
8,000+
Customers globally
105+
Employees worldwide
Since 1997
Building and scaling companies

We've spent nearly 30 years building, investing in, and scaling companies across markets. Idea Sprint exists because we got tired of seeing good operators waste months on ideas the market didn't want. We built the tool we wished we had.

Compared to what you've tried before.

Surveys
People say "yes" but don't buy
2–4 weeks · Free–$500
Ads + landing page
Clicks, not buying intent
3–7 days · $50–$200
Design sprint
Usability with 5 users, not market demand
1–2 weeks · $15K–$25K
Research firm
Thorough but takes 2 months
4–8 weeks · $25K+
Idea Sprint
Real responses from real prospects
Cold outreach to 500 ICP-matched strangers. The hardest signal to fake.
14 days · €2,500

One sprint. One price. No retainers.

A founder doing this themselves spends 40–60 hours and thousands in opportunity cost. Your sprint costs a fraction of that.

Market Validation Sprint
€2,500 / sprint

14 days. Everything included. All assets yours to keep.

  • Market research & ICP definition
  • 500 qualified, ICP-matched prospects
  • Cold email sequences in your ICP's language
  • Conversion-optimized landing page
  • Full campaign execution & monitoring
  • 3-page go/no-go report with response analysis
  • All data, lists, and assets are yours to keep
Book Your Sprint

Know if your idea has demand. In 14 days. With real data.

No hype. No opinions. Just 500 prospects and a clear answer.

Book Your Sprint