Startup Tech Sparring
30 min, free
For you if you have an idea and want to know what actually needs to be built.
Outcome
- The 3 features your first customers need
- A list of what not to build
- An honest view on whether a build makes sense
Get your app built. Live in 1 to 2 weeks.
An app that holds up with real, paying customers. Fixed price with a money-back guarantee, for founders without a technical co-founder.
Book a free tech sparring
20+ yearsas a software developer, since 2004
1 to 2 weeksuntil your first version is online
from €4,000fixed price, agreed in writing
100% yourscode, repos and accounts
I have built software for
Sound familiar? Three things founders tell me all the time.
Today
“Three months of Figma screens and a backlog of 40 features.”
After the Validation Build
A link you send to your first 10 prospects.
Today
“An agency wants €60,000 and 4 months.”
With me
From €4,000, in 1 to 2 weeks. And the code is yours.
Today
“The no-code prototype collapses at 50 users.”
With Product-Ready
A foundation that paying customers can run on.
The first step
Startup Tech Sparring. 30 minutes, free.
You tell me what you are planning. You leave with:
- the 3 features your first customers really need,
- a list of what you should not build,
- an honest assessment of whether a Validation Build is right for you. If it is not, I will tell you.
You do not need a spec. An idea and a target group are enough.
Four stages. Start wherever you are right now.
Every stage has a fixed scope and a transparent price. From stage 3 on I work in sprints: 2 weeks, fixed scope, €8,000 fixed price. You decide again after every sprint.
Validation Build
Money-back guarantee1 to 2 weeks, from €4,000
For you if you want to test with real users, not slides.
Outcome
- Live on your own domain
- Login and user accounts
- Your core feature, ready to use
- Feedback channel for first users
Product-Ready
2 to 4 sprints at €8,000 each
For you if your first version is already running and now needs to carry paying users.
Outcome
- Payments and subscriptions
- Solid user management
- Automated tests
- Monitoring and backups
- A codebase your own team can build on
CTO-on-Call
Monthly, price on request
For you if the product is running and you need technical leadership without a full-time CTO.
Scope as needed
- Tech support
- Planning the next stages of the product
- Building your own development team
- Technical support for your investor pitch
The guarantee: in writing, measurable, before we start.
Before we start, we agree in writing on what must work at the end. For example: “5 test users can sign up and use the core feature of your app.” If that is not live at the end, you get your money back.
Your options compared.
| Criterion | Validation Build | Agency | Build it yourself with no-code | Find a co-founder |
|---|---|---|---|---|
| Time to launch | 1 to 2 weeks | usually several months | fast, as long as it stays simple | search first, then build |
| Cost | from €4,000, fixed | often five figures and up | low, but it costs your time | equity |
| Who owns the code | you, from day 1 | depends on the contract | the platform | the company |
| After launch | Product-Ready or a clean handover | a new quote | rebuild once it grows | open |
| Risk | money-back guarantee | yours | technical dead end | the wrong partner |
Not ready for a call yet?
What does your app really need to do?
The 5-minute scope check: 8 questions, no email required. At the end you know whether you need a Validation Build or should test with a landing page and interviews first.
Fast thanks to AI. Good thanks to me.
I work with AI and a small team of experienced software developers. That is why you go live in weeks instead of months. I personally handle architecture, code review and acceptance: you have one contact who stands behind the quality.
Everything is in your name.
Code, repos and accounts belong to you from day 1. If you hire your own team later, I hand over cleanly. If you like, I stay on as CTO-on-Call.
What would you need to build for your first customer to pay?
Let us find out in 30 minutes.
Book a free tech sparring
Peter BagiSoftware developer · [email protected]