Web apps with login, database and backend – custom-built
Some jobs are too big for a website and too specific for off-the-shelf software: a portal where clients see their orders, a booking system, an internal admin area. We build web apps like these end to end – interface, backend, database and login. They run in the browser, on phones and desktops alike, with nothing to install.
Sign-in with email and password or a magic link, plus roles: who can see, create and change what?
Database and data model
We structure your data so it stays clean, searchable and easy to extend a few years from now.
Backend and API
The logic runs on the server, not in the browser: calculations, checks, notifications – and an interface other systems can use too.
Admin area
An admin area where your team manages content, users and settings themselves, without needing a developer.
Connected to your tools
Payment providers, email delivery, calendars, accounting or existing systems – wherever there is an interface to connect to.
Security and operations
Encrypted connections, safely stored passwords, updates – and if you like, we look after the app once it’s live.
Web apps with demo access
Three web apps from our concept projects – with login, data and real flows, all to try out and without real data.
wimmer-webservices.com/en/examples/pegel
Concept projectPegel. Sign in, dashboard, switch the period: analytics software with demo data. See it live
Concept projectFadenlauf. Checkout of an online shop in three steps – validated, clear and without payment data. See it live
wimmer-webservices.com/en/examples/hartl-partner
Concept projectHartl & Partner. Client portal of a tax firm: deadlines, document upload, messages. See it live
Who it’s for
Orders_FINAL_v3.xlsxOrdersSearch …
ABC
1ClientJobStatus
2Bakery M.Delivery Monopen
3Practice K.Maintenancein progress
4Lakeside HotelQuotedone
5Winery H.Call backopen
Today: a spreadsheet passed around by email.With your own web app: one portal with login, up to date for everyone.
Businesses still holding their processes together with spreadsheets and email
Companies that want to give their clients their own portal with a login
Teams whose standard software doesn’t fit the way they work
Founders who need a first working version of their idea
Custom web app or standard software: when a tailored solution pays off
Ready-made software exists for many jobs, and it’s often the right choice. A custom web app pays off when your processes are unusual, when you’re connecting several tools by hand, or when you want to offer clients a service that doesn’t exist off the shelf. In the first conversation we’ll tell you honestly whether an existing solution will do.
Spreadsheet Emails Calendar Accounting copied by handYour web app
Where things are copied by hand today, your own app keeps everything in one place.
A web app runs in the browser. Your users don’t install anything, updates reach everyone at once, and the same app works on phones, tablets and desktops. If you want, it can sit on the home screen like an app. For most business applications that’s simpler and cheaper than separate apps for iOS and Android.
Update live – on every device
OrdersNew: export as PDFOrder 1042openOrder 1041in progressOrder 1040done
OrdersNew: export as PDFOrder 1042openOrder 1041in progressOrder 1040done
OrdersNew: export as PDFOrder 1042openOrder 1041in progressOrder 1040done
No app store, nothing to install: one update, instantly for everyone.
We build web apps step by step: first a clickable design, then a first working version with the key features that you can try out in everyday use early on. That way you notice what’s missing or gets in the way before much money is spent. After that, the app grows with your needs.
1Clickable draft
Need a date filter
2First version
Date
3Next steps
Try it early in everyday use – what’s missing goes into the next step.
As soon as client or employee data is involved, data protection law such as the GDPR applies. So we plan privacy in from the start: only what’s really needed is stored, access is tied to clear roles, and if you like, servers and database run in the EU.
Client · record
Name
Maria K.
Email
maria@…
Order
1042
Date of birth
not needed
Who sees what
Admineverything
Teamorders
Clientown only
Servers & database in the EUon request
Store only what’s needed. Access by role.
Spreadsheet Emails Calendar Accounting copied by handYour web app
Where things are copied by hand today, your own app keeps everything in one place.
Update live – on every device
OrdersNew: export as PDFOrder 1042openOrder 1041in progressOrder 1040done
OrdersNew: export as PDFOrder 1042openOrder 1041in progressOrder 1040done
OrdersNew: export as PDFOrder 1042openOrder 1041in progressOrder 1040done
No app store, nothing to install: one update, instantly for everyone.
1Clickable draft
Need a date filter
2First version
Date
3Next steps
Try it early in everyday use – what’s missing goes into the next step.
Client · record
Name
Maria K.
Email
maria@…
Order
1042
Date of birth
not needed
Who sees what
Admineverything
Teamorders
Clientown only
Servers & database in the EUon request
Store only what’s needed. Access by role.
What does a web app cost?
First version (MVP)
from €7,990
usually €7,990–€15,900
Login, database, admin area and the core features – in the browser on every device.
Larger portal with integrations
from €15,900
usually €15,900–€31,900
Several roles, connections to existing systems or data feeds, search and filters, payments or booking logic – e.g. a travel portal with thousands of offers and several hundred pages.
BackupUpdate
Running & maintenance
from €55 per month
Hosting, security updates, backups and monitoring.
Guide prices in euros, no VAT is charged (Austrian small business exemption). You get your fixed price after our first call – no hidden extras.
How we work
From the first call to well after launch, you always know what happens next. You get a fixed quote once we have talked.
A free conversation about goals, audience and budget. Afterwards both sides know whether it is a fit.
≈ 1 week
2
Step 2: Concept & design
Structure, copy and look – as a clickable prototype you can try out first.
≈ 2–3 weeks
3
Step 3: Build
Development, content, animation and testing on every device, in both languages.
≈ 3–6 weeks
4
Step 4: Launch & care
Go-live, handover and then SEO, hosting and maintenance from one team.
ongoing
Frequently asked questions
How much does it cost to build a web app?
A first version with login, database and the core features starts at €7,990 (usually up to €15,900), larger portals with integrations into existing systems or data sources at €15,900 – no VAT is charged (Austrian small business exemption). Running and maintenance start at €55 a month. We like to start small and grow from there; after the first call you get a fixed price.
How long until the first version?
That depends on scope. We plan so that you can try a first working version with the key features early, instead of waiting a long time for everything at once. You get a realistic timeline with the quote.
Web app or native app for iOS and Android?
For most business applications a web app is enough: it runs on every device, needs no app store and is cheaper to maintain with one codebase. A native app is worth it mainly when you need deep access to device features or have to be found in the app stores. We’ll advise you on what fits your case.
Can you connect our existing systems?
In most cases yes, as long as the system offers an interface (API) or a data export. We check that up front before we commit to it.
Do you use AI in development?
Yes. AI tools help us write code, tests and documentation, so you get to a first working version sooner. We decide the data model, permissions and security ourselves, and every version is reviewed and tested before it goes live. We never put login credentials or your customers’ real data into AI tools.
Who looks after the app once it’s live?
We can: with hosting, updates and further development – and one fixed point of contact if anything comes up.
A practical guide to web app development: how a web app differs from a website, when custom beats off-the-shelf, the building blocks, process and cost factors.
Got a process that deserves its own app?
Tell us briefly what the app should do and who will use it. We’ll get back to you within one business day.
Start a project
Tell us briefly about your project. We will get back to you within one business day.
Why work with us
24 hReply to every enquiry within one business day
WorldwidePersonal contact, remote for clients anywhere
DE / ENAdvice and websites in German and English
1 partnerDesign, tech, AI and care from one partner
