Design & Validation
Prototyping validate before you build
From lo-fi wireframe to interactive prototype — we build clickable product experiences that validate ideas, convince stakeholders and prevent development waste.
Design environment
Your product visible — before the first line of code.
Wireframes
Screen layouts and user flows.
What we create
Clickable prototypes that feel like the real product
We build prototypes at every stage — from rough sketches to production-ready interactive demos that convince investors and developers can follow directly.
- 01Figma high-fidelity prototypes
- 02Interactive user flows
- 03Mobile & desktop responsive
- 04Investor-ready presentations
Discovery
Everything mapped out — before the first sprint.
Intake meeting
Getting to know your organisation and requirements.
Our testing method
From assumption to evidence
Every change after development costs 10x more than a change in a prototype. We help you prevent those costs with structured tests and hard data.
- 01Structured usability tests
- 02Heatmaps & click analysis
- 03Feedback sessions with real users
- 04Iterations based on data
Quality assurance
Only live when every detail is right.
Test overview
Status of all test categories.
Handoff & documentation
Ready for development on day one
After approval we deliver structured files including annotations, design tokens and interaction specs for a seamless handoff to development.
- 01Annotations and specs in Figma
- 02Component inventory
- 03Style guide & token export
- 04Developer Q&A session
Project environment
Real-time insight into your project — anytime, anywhere.
Project overview
Daily summary of your project.
MVP validated in 3 weeks, funding secured
A fintech founder asked us to build an interactive prototype for investors. Result: 8 usability tests, validated in 3 weeks and €500K funding secured.
3 weeks
validation
€500K
funding
8
usability tests
Why choose Ontwikkelaars?
01
From briefing to prototype in 3 days
We've optimized the process for speed without compromising quality. You have something to react to quickly.
02
Test before you build
Every change after development costs 10x more than a change in a prototype. We help you prevent those costs.
03
Less development waste
Our prototypes are built with developers in mind. The handoff is smooth, the specifications are complete.
Frequently asked questions
A wireframe is a static sketch of the structure: boxes, text and buttons without interaction or real design. A prototype is clickable and simulates the real user experience — with navigation, interactions and sometimes animations. Prototypes are testable, wireframes are not.
We work primarily with Figma (for clickable prototypes and handoff) and Framer (for advanced interactive prototypes that feel like the real product). The choice depends on the goal: a user test calls for Figma, an investor pitch sometimes calls for Framer.
Absolutely — that's even one of our most requested use cases. A Framer prototype convinces investors and stakeholders better than a slide deck. We build pitch prototypes that immediately convey your product vision.
That's exactly the point of prototyping. Changes in a prototype cost hours — the same changes after development cost days. We iterate quickly and efficiently based on test results.
After an intake call and agreement we can typically start within 3–5 working days. For urgent projects — such as an upcoming pitch or investor presentation — we always check whether a faster schedule is feasible. Get in touch and we'll give you an honest estimate.
The prototype remains your property and can be reused as a reference for development, as an onboarding tool for new team members or as the foundation for a design system. We export all assets and specifications so nothing is lost. If the project continues into development, we can take care of that for you as well.
Let's discuss your project
Schedule a free intro call. We discuss your needs and advise on the best approach.