SaaS Validation Sprint
Validate your SaaS in 14 days before investing €50,000 to €200,000
Most SaaS projects lose between €80,000 and €250,000 on a product that never finds its market. The JAK Solutions Validation Sprint gives you real market evidence in two weeks — functional prototype, user testing, Go/Pivot/Kill recommendation.
€8,000
fixed-price guarantee
14 days
from concept to validation
Free Guide
How to validate your SaaS before investing €50,000 to €200,000
The complete guide to launching a SaaS prototype in 14 days
The exact methodology of the 14-Day Sprint- How to read market signals before you build
- Case studies: Cobria (450 users) & My Impact Tool (100+ users)
- SaaS validation checklist + ROI calculator (Excel)
- Free 30-min strategic call with JAK Solutions
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The Problem
The six-figure mistake most founders make
Every year, ambitious leaders commit significant budgets to build a SaaS product. And too often, they discover — too late — that the product they built doesn't match the market they thought they understood. This isn't about bad developers or poor execution. It's the absence of one critical step: validate before you build.
How this scenario plays out, year after year
STAGE
Typical cost
Time invested
Validation level
Internal thinking & scoping
€5,000 – €15,000
4 to 8 weeks
No real validation
Full development
€60,000 – €180,000
4 to 7 months
Still no validation
Launch & discovery of problems
€10,000 – €30,000
1 to 3 months
First real feedback
Rebuild or pivot
€40,000 – €100,000
3 to 6 months
Too late: budget is gone
Total (worst case)
€115,000 to €325,000+
12 to 24 months
Confirmed failure
Key Insight
A prototype is not a smaller version of the product. It's a validation instrument designed to test whether the product should exist — before you invest your budget.
Why SaaS Products Fail
The 4 main causes of failure in SaaS projects
These aren't theoretical. Each corresponds to a specific trap that the 14-Day Sprint methodology is designed to avoid before it costs you time and money.
01
Building on assumptions
Internal stakeholders assume they already understand the user, how the product works and whether customers will pay. They proceed as if these convictions were facts — when founders are not their customers and CEOs are not their end users.
Typical Cost: €40,000 - €12,000
02
Investor pressure before validation
Founders feel pressure to show investors something clickable. The result is often a rushed, unvalidated product launched too early just to have "something to show." Seed and Pre-Series A investors don't want a finished product — they want traction.
Typical Cost: €20,000 - €80,000
03
Internal bias in established companies
When an internal team proposes a new SaaS, the idea is evaluated by colleagues who share the same assumptions as those who designed it. The product works perfectly in a controlled internal test — and fails the moment it meets real users who have no patience for friction.
Typical Cost: €30,000 - €100,000
04
Scope creep before validation
As the product takes shape, stakeholders keep adding features. Marketing wants a dashboard. Sales wants an API. The CEO wants AI. By the time real users see it, every feature added before validation may be completely useless — and has consumed budget that could have been used to learn.
Typical Cost: €15,000 - €60,000
The Smarter Alternative
Prototype → Test → Validate → Build
The alternative to building before validating is not to slow down. It's to move smarter. This approach gives you concrete market evidence in days rather than months — and lets you make investment decisions based on real data, not assumptions.
Step 01
Prototype
Build a testable, functional representation of your core workflow — in days, not months.
Days 1-7
Step 02
Test
Expose the prototype to real target users — external, unbiased, from your actual market.
Days 8–10
Step 03
Validate
Analyse behaviours, feedback and conversion signals to produce a data-driven report.
Days 11–12
Step 04
Build
Invest in full development with complete confidence — with a validated scope and predictable ROI.
After the sprint
Why 14 days
is the optimal duration
Long enough to build something real
7 days of focused work produce a prototype that real users can actually test — one core workflow, live data, not a static mockup.
Short enough to stay focused
Beyond two weeks, the prototype becomes a product. Features creep in, scope expands, and validation discipline disappears.
Fits investor timelines
You can go from "we have an idea" to "we have traction data" in one month — slotting between two investor meetings.
Repeatable if pivot needed
At €8,000 fixed price, the sprint is repeatable. If data recommends a pivot, a second sprint can launch without burning your budget.
The Sprint in Detail
The 14-Day SaaS Validation Sprint
A structured 4-phase process designed to transform a concept into validated market signals in exactly two weeks. Each phase has a clear objective, a precise deliverable, and a defined decision point.
01
Strategy Workshop
Days 1-2
The sprint begins with rigorous strategic discipline — not design or development. The JAK Solutions team works with you to define the core workflow the prototype must demonstrate.
- Core workflow definition: what single action generates value for the user?
- Target user identification and their main friction point
- Monetisation logic: subscription, per user, per transaction
- AI feature definition if applicable
Deliverable
Technical & Strategic Blueprint
02
UX & Prototype Design
Days 3-7
In five intensive days, the team builds a fully functional, clickable prototype covering the entire user journey. This is not a wireframe or a limited Figma mockup — it's a real environment with live data, authentic interactions, and natural navigation.
- Complete core workflow with real data and interactions
- User onboarding flow (the critical first 3 minutes)
- AI agent integration if applicable
- Mobile responsive version if relevant
Deliverable
Functional, navigable prototype
03
User Testing & Market Validation
Days 8-12
Phase 3 confronts the hypothesis with reality. Real users from your target market — not your contact list — interact with the prototype. Their behaviour is observed, recorded and analysed using a structured protocol.
- 8–12 participants recruited by JAK Solutions from your target market
- 45–60 min sessions using the think-aloud method
- Automatic behavioural tracking of every click and navigation path
- Post-session questionnaire: usability, perceived value, willingness to pay
- Real-time conversion intent signals documented
Deliverable
Validation report with behavioural data
04
Strategic Decision & Scaling Plan
Days 13-14
The final phase transforms data into decisions. JAK Solutions synthesises everything collected in Phase 3 and delivers a clear, actionable strategic recommendation — one of three outcomes, each with complete rationale.
GO — The prototype validates the hypothesis. Full roadmap + investor brief prepared.
PIVOT — A misalignment identified, but a clearer opportunity revealed. Sprint 2 plannable.
KILL — Data clearly shows this product doesn't solve a problem users will pay to fix. Budget saved, capital reallocated.
Deliverable
Full development roadmap, Investor-ready traction summary, Go/Pivot/Kill recommendation
Who It's For
The Sprint is built for two decision-maker profiles
Identifying your profile helps you determine whether this methodology fits and how to position the sprint internally to get stakeholder buy-in.
Profile 1
The Startup Founder
- RoleCEO / Co-founder
- StageSeed or Pre-Series A
- GeographyBelgium, Luxembourg, France, Switzerland
- Validation budget€8,000 – €30,000
- Time pressureNext investor meeting in 30–90 days
Concrete scenario
- You raised €50,000 in pre-seed
- Your next investor meeting is in 6 weeks
- With the sprint: you arrive with validated data, real user feedback, a traction summary
- Without the sprint: you arrive with a deck, a demo and a market estimate
Profile 2
The SME CEO
- RoleCEO / Managing Director
- Company size20 to 250 employees
- SectorConstruction, Events, B2B services
- Digital budget€10,000 – €200,000
- Main constraintCan't risk €100,000 without external proof
Concrete scenario
- You want to launch a SaaS alongside your core business
- The board is sceptical and wants evidence
- With the sprint: you present validated data, a Go/Pivot/Kill recommendation, a de-risked roadmap
- Without the sprint: you present a concept, an agency quote and your internal conviction
Case Studies
Real results, on real projects
These two projects illustrate how the JAK Solutions methodology has been applied in different contexts — and the measurable outcomes that followed.
Construction · Belgium
Cobria
The Cobria CEO identified a real gap: existing software for Belgian construction SMEs was either too generic or too expensive. Their internal CRM had reached its limits, and dependence on a single developer was a major risk.
JAK Solutions proposed a fully custom SaaS tailored to the industry — capable not only of solving Cobria's internal problems but of becoming a commercial product. The first version was delivered in 6 months, with immediate onboarding on real construction sites.
JAK Solutions proposed a fully custom SaaS tailored to the industry — capable not only of solving Cobria's internal problems but of becoming a commercial product. The first version was delivered in 6 months, with immediate onboarding on real construction sites.
The final phase transforms data into decisions. JAK Solutions synthesises everything collected in Phase 3 and delivers a clear, actionable strategic recommendation — one of three outcomes, each with complete rationale.
GO → Launched
450
Active users
6 months
First version delivered
~50 FTE
Company size
2× value
Internal tool + commercial SaaS
Events · VO Group (~100 FTE)
My Impact Tool
My Impact Tool started as an internal tool built by JAK Solutions for VO Group — proprietary software to calculate and report the ecological impact of corporate events. It worked so well internally that the CEO saw a broader opportunity.
Validation revealed a key insight: event agency account managers had one absolute priority — generating a ready-to-export PDF report for each client event, with zero manual data manipulation. This single finding shaped the entire productisation roadmap.
Validation revealed a key insight: event agency account managers had one absolute priority — generating a ready-to-export PDF report for each client event, with zero manual data manipulation. This single finding shaped the entire productisation roadmap.
Key lesson: an internal tool can become a commercial product — but only when real user priorities are identified before full development begins.
GO → Commercial SaaS
100+
Active users
10
Agencies onboarded
~6 months
Full productisation
Revenue
Active generator
Pricing & Deliverables
One fixed price. Zero surprises. Zero risk.
The JAK Solutions 14-Day Validation Sprint is offered at a single fixed price. This model exists for one reason: when you're investing in validation, the last thing you need is budget uncertainty.
Validation Sprint · 14 days
€8,000
Fixed-price guarantee & all phases included
Overrun guaranteeIf JAK Solutions exceeds €8,000, the difference is absorbed by the agency — never passed on to you.- Timeline guarantee14 calendar days from the strategy workshop to delivery of the final report.
Locked scopeSet at the end of Phase 1. No additional costs can arise during the sprint.
Real users recruited by JAKMinimum 8–12 participants from your target market, recruited directly by the agency.
What you receive at the end of the sprint
Technical & Strategic Blueprint.
Reference document from the Phase 1 strategy workshop
Functional, navigable prototype.
Reference document from the Phase 1 strategy workshop
User validation report.
Behavioural data from 8–12 real-user testing sessions
Go/Pivot/Kill recommendation.
Fully documented rationale, based on real market data
Investor-ready traction summary.
Engagement data, user quotes, conversion metrics
Complete development roadmap.
Phase-by-phase cost estimates with validated scope
Brand & launch strategy.
Positioning and go-to-market plan for post-validation phase
Comparison
JAK Solutions vs. the traditional approach
Criteria
JAK Solutions
Traditional agency
Validation before build
Always built in
Rarely proposed
Fixed-price guarantee
€8,000 — overrun paid by JAK
Estimates only, changes billed separately
User testing included
8–12 external users recruited by JAK
Not standard, client's responsibility
Time to first market evidence
14 calendar days
4 to 9 months after full development
Investor-ready output
Traction report with real engagement data
Deliverable is code — investor narrative is your problem
Go/Pivot/Kill recommendation
Delivered with full documented rationale
Not provided — you assess product-market fit yourself
Minimum investment to start
€8,000
€60,000 – €200,000 for a full build
FAQ's
What is a SaaS validation sprint?
A structured 14-day process that tests your concept with real users before any major investment. It includes a functional prototype, testing sessions, and a Go/Pivot/Kill recommendation based on real data — not internal assumptions.
How much does SaaS validation cost with JAK Solutions?
The Sprint is offered at a fixed guaranteed price of €8,000, all phases included. If our internal costs exceed that, JAK Solutions absorbs the difference. Your budget is locked at the end of Phase 1 and cannot change during the sprint.
Who recruits the users for testing?
JAK Solutions directly recruits a minimum of 8–12 participants from your defined target market. These are not colleagues or internal testers — they are genuine external users with no prior knowledge of your product.
What happens if the sprint recommends a PIVOT?
A PIVOT outcome means the sprint identified a misalignment but also revealed a clearer opportunity. JAK Solutions documents the refined hypothesis and can plan a second 14-day sprint on the revised concept at the same fixed price of €8,000. Many of our strongest projects came from a first-sprint pivot.
Does the sprint work for non-technical founders?
Yes. The sprint is designed for decision-makers with deep domain expertise but no technical background. JAK Solutions handles all design, development and testing logistics. Your role is to define the business hypothesis — we handle everything else.
Which geographies do you serve?
JAK Solutions primarily serves French-speaking Europe: Belgium (Wallonia and Brussels), Luxembourg, France and Switzerland. If your business operates outside these markets but your decision-maker engages in French, contact us — we evaluate each situation individually.
What exactly is included in the final deliverable?
You receive a functional prototype, a user testing report with behavioural data from 8–12 participants, a documented Go/Pivot/Kill recommendation, an investor-ready traction summary, a full development roadmap with phase-by-phase cost estimates, and a brand and launch strategy.
Why 14 days and not fewer?
14 days represent the optimal balance between speed and quality of learning. Fewer than 14 days and the prototype can't be complete enough for meaningful testing. More than 14 days and scope creeps while validation discipline gives way to a development mindset.
Are you eligible?
The Sprint is not for everyone
It's designed for a specific type of leader facing a specific challenge. This framework helps you determine whether you're eligible and whether the timing is right.
Eligible
- CEO, co-founder or managing director with decision-making authority
- €8,000 budget available or pre-approved
- Clearly defined SaaS, AI application or digital platform concept
- French-speaking market: Belgium, Luxembourg, France or Switzerland
- Can approve €8,000 independently or with one approval level
- Ready to start within 30 days with a defined commercial motivation
Not eligible right now
- Consultant exploring on behalf of a client without decision authority
- Budget not yet secured or approved
- Still at the idea exploration stage with no defined concept
- Hardware, pure e-commerce, or marketplace without a SaaS component
- Long multi-level validation process required
- No defined launch date, no commercial urgency
14 days
€8,000
Zero risk
You have an idea.
The market has an opinion.
Find out which one is right in 14 days.
Most founders spend €100,000 before discovering nobody wants their product. JAK Solutions gives you validated market evidence in two weeks, at a fixed price, before any commitment to full development. If we go over budget, we pay the difference. Your risk is zero.
No commitment · Honest diagnosis · No sales pitch if the sprint isn't the right fit
Brings your application ideas to life
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