We turn your idea into a fully clickable prototype with real flows, real content, and developer-ready handover — so you can validate, pitch, and build with confidence.
DACH partner: Nekxsum
Most teams waste months and thousands building something they later change. We help you see your product first — so you make better decisions before writing a single line of code.
If your three features are too many or your user is too vague, we say so. AI builders don't.
No generic AI templates. Your colors, your concept logo, every screen designed for your idea.
Developer handover doc included. Your dev team picks it up and builds. No reverse-engineering.
For teams in Germany, Austria and Switzerland: our local partner Nekxsum handles German-language sales calls, scoping discussions and onboarding. You get a local point of contact in your timezone — we handle the build.
For teams in the US, UK, Canada and worldwide: we work with you directly via email and scheduled video calls. USD pricing, US-friendly call hours (8am–11am EST / 5am–8am PST), and async-first communication so you keep moving in your timezone.
Whatever your idea needs — a customer-facing app, the admin panel behind it, a SaaS dashboard, or all of them combined. The screen budget in your package covers the total across whatever platforms you choose.
If you're investing real money or time into building something digital, you should see it first. Four kinds of people use Protobuild.
Validating an idea before raising or building.
Existing businesses planning a digital expansion.
Brief your future dev team or external agency precisely.
Show clients the build before quoting full development.
All packages include the full prototype — every screen, your colors, your concept logo. Higher tiers add strategy, polish, more revisions, and richer handover.
Each round is one batch of feedback you send together. Bundle multiple tweaks into a single round to make the most of it. We'll keep iterating until it's right within your package's rounds. Bigger scope changes (new sections, new flows) are quoted separately.
| Starter |
Growth €349 |
Pro €695 |
|
|---|---|---|---|
| Screens | Up to 25 | Up to 45 | Unlimited (reasonable scope) |
| Theme & colors | ✓ | ✓ | ✓ |
| Concept logo | Wordmark | Wordmark + mark | Wordmark + mark + 2 variants |
| Realistic content | — | ✓ | ✓ |
| Pitch-deck screenshots | — | ✓ | ✓ |
| Revision rounds | 2 | 3 | 5 |
| Developer handover doc | — | Basic | Full (architecture, schema, components) |
| Strategy call | 30 min · before | — | 60 min · after |
| Communication | Email · WhatsApp · 1 call | Email · WhatsApp · 2 calls (Zoom/Meet) | |
| Mobile + desktop responsive | ✓ | ✓ | ✓ |
| Hosted link + source files | ✓ | ✓ | ✓ |
| Turnaround | 3 working days | 5 working days | 7 working days |
| Credit toward full build | — | — | ✓ Full €750 credited |
Fair question. Here's what you actually get for €325 that an AI builder won't give you for €20/mo.
Each one was a full clickable prototype with theme, concept logo, and handover doc.


Share your idea today. See it working by next week.