Web Apps & MVP development for growing businesses
From “kind of works” to “works”.
Whether it's an idea or a home-grown prototype: we turn it into a web app that runs securely, and we take care of operations afterwards.
- Code reviewok
- Credentials out of the codefixed
- Login & rolesok
- Backupsdaily
- Monitoringrunning
The situation
Where things get stuck today.
The prototype that suddenly matters A colleague built a tool with AI. Now half the team relies on it, and nobody knows whether it's secure.
The idea that never gets finished You have a clear product idea. But every quote talks about many months and big budgets.
Web apps nobody looks after The application runs. But who handles the updates, the backups, the next feature?
Services
Three building blocks for your web app development.
01MVP & new applications
From an idea to an application your customers use.
We build the first version of your product, a portal or an internal tool. Lean, and built to grow.
MVP package from €4,999 netWhat’s included →
- Müller GmbHconfirmed
- Kraft Logistikconfirmed
02From prototype to production
Home-grown tools you can rely on.
We review code and security, move the tool to a stable server and make it maintainable. Plus clear guidelines for how your team can build safely in the future.
Vibe code check from €299 netWhat’s included →
// tools/export.jsconst key = "sk_live_51Hx…"const key = env.API_KEY✓ fixedapp.get('/export', async (req, res) => {app.get('/export', requireAuth, async (req, res) => {✓ fixed const rows = await db.query(sql + req.query.id) const rows = await db.query(sql, [req.query.id])✓ fixed res.json(rows)})
03Operations & ongoing development
Web apps someone takes care of.
Hosting, updates, backups, monitoring and new features, for as long as you want.
- ●uptimerunning · 38 ms
- ✓backup_nightlydaily · ok
- ✓security_updatesapplied
- ✓new_feature_exportshipped
Examples
Custom web apps: typical projects.
Event and course management
BeforeDates and courses are maintained by hand in several places.
AfterThe team creates workshops and training programs itself and manages everything in one place.
Customer portal
BeforeCustomers email to ask about status, documents and invoices.
AfterThey see everything themselves in their own portal, around the clock.
An AI prototype grows up
BeforeThe tool runs on a laptop, credentials sit in the code, and only one person knows how it works.
AfterIt runs on a server, with login, backups and documentation.
Case · mediaConsent
From first draft to live SaaS. In 3 months.
A platform for GDPR-compliant photo and video consent at events. Guests sign on a tablet or via QR code, and the records are created automatically. Analysis, concept, design, development, documentation and operations: all done by us. Today, more than 30 users work with the platform.
We run what we build.
That's why we know what operations really mean: updates, backups, support, every day.
- ✓Consent · guest 041tablet · 10:42
- ✓Consent · guest 042qr code · 10:44
- ○Withdrawal · guest 017flagged
- ✓Records exportpdf · automatic
Process
How your idea becomes an application.
- 01Free
Get to know each other
30 minutes, free. We clarify what you have in mind and tell you honestly whether a custom web app pays off or an off-the-shelf tool will do.
- 02In writing
Analysis & concept
We decide what the first version needs to do and what can wait. You get effort and benefit in black and white.
- 03Iterative
Development
We build in short steps. You see early on what's taking shape, and you have a say.
- 04We stay
Operations
After launch, we stay: hosting, updates, backups, new features.
Ownership
Your web app, your infrastructure.
Your application runs wherever you want it: on your own servers or in a data center of your choice, in Germany, for example. We set it up and run it for you.
The code belongs to you. If you want to switch providers, you take everything with you.
We work this way ourselves: mediaConsent runs on infrastructure we operate ourselves.
FAQ
FAQ on web app development.
Your question isn’t here?
Ask us directly: in the chat at the bottom right or in a free intro call.
Ask a question →What is an MVP?
The first version of your product: it does only what matters most, but is already used by real users. That way, you learn early what's really needed before you invest a lot.
How long does development take?
It depends on the scope. Our own software product was live after three months. You'll get a precise estimate after the analysis.
An employee built a tool with AI. Can you take it over?
Yes. We review code and security, tell you honestly whether it's worth building on or better to start fresh, and move it into stable operation.
Who owns the code?
You do. If you want to switch providers, you take everything with you.
Which technologies do you use?
Modern, widely used technologies like React, TypeScript and Supabase. That way, any other team can find their way around the code later on.
Do you also build web apps with AI features?
Yes. Many applications get AI built right in, for search, text or analysis, for example. Find out more on our AI & Automation page.
What happens after launch?
We stay. We take care of hosting, updates, backups, monitoring and new features, for as long as you want.
Let’s connect
What only “kind of works” at your company?
An idea, a prototype or an application nobody looks after: tell us about it. In 30 minutes, you'll know how to move forward.
$ project --discuss
✓ Duration: 30 minutes
✓ Cost: none
✓ Outcome: an honest take on whether it's worth it
# You talk directly to the founders.
→ hello@levisteria.com
