Web Applications
Internal tools and customer-facing apps that replace spreadsheet chaos with software built for your exact workflow.
- process mapping first
- role & permission systems
- works on every device
- your branding, your domain
custom_software
Stop bending your business around off-the-shelf tools.
Web apps, client portals, dashboards and SaaS — built around how your business actually works. Shipped in weeks with AI-powered development, owned 100% by you.
ROLES
⬢ Admin
◇ Team
○ Customer
VIEWS
Orders
Leads
Partners
47
open orders
12
new leads
8
partners active
#1042 · PV installationSCHEDULED
#1041 · EMS setupIN PROGRESS
#1040 · heat pump quote→ PARTNER
#1039 · maintenanceDONE
tl;dr
KlickNerds builds custom software: web apps, client portals, dashboards, APIs and SaaS products. AI-powered development ships working software in weeks, clients own the code completely. Live example: the Flow-ee platform — a multi-role portal plus an automated lead and partner engine that makes its marketing pay for itself.
sound_familiar
The moment you've outgrown your tools:
EXCEL OSYour company runs on spreadsheets. Version 14_final_FINAL.xlsx is your operating system, and one wrong sort ruins a week.
TOOL ZOOFive subscriptions, none of them talk to each other. Your team is the API: copying data from one tool into the next, all day.
DOESN'T FITThe standard tool does 80% of what you need. The missing 20% is exactly the part that makes your business different.
our_approach
Software that fits like it was made for you. Because it was.
We start with your process, not with a feature list. How does an order actually move through your company? Who touches it, where does it stall, what gets retyped? The software we build mirrors that flow — minus the friction.
AI-powered development changed the economics. What took quarters now takes weeks: our developers direct AI coding tools and verify everything, which means custom software is no longer a luxury for corporations. An MVP in 6 weeks isn't a promise, it's our track record.
We ship in modules, not big-bang launches. The core goes live early, real usage decides what gets built next. You can stop after any module — the pressure to deliver stays on us, where it belongs.
And when it's done, it's yours: full source code, full ownership, no lock-in. We'd rather keep clients through good work than through hostage clauses.
checklist.md — when does custom software pay off?
Build custom when at least two of these are true:
- Workarounds eat hours daily: your team spends real time fighting the tools.
- Your process is your advantage: standard software would flatten what makes you better.
- The tool zoo doesn't talk: data lives in five places and matches in none.
- You're licensing shelf-ware: paying for 100% and using 20%.
- Your model needs something new: like an automated partner network no tool offers.
Fewer than two? We'll tell you to keep your current tools. Honestly.
whats_included
Six things we build.
From a focused internal tool to a full SaaS product. Every project ships with documentation and ownership.
Client Portals
One place where customers, team and admins see exactly what they need: orders, status, documents, communication.
- multi-role architecture
- order & project tracking
- document exchange
- self-service for customers
Dashboards
Your business numbers, live and in one place. No more compiling reports from four exports every Monday.
- live data from your tools
- KPIs that match your goals
- alerts on thresholds
- board-ready exports
APIs & Integrations
The connective tissue: your tools finally talk to each other, data flows once and lands everywhere it should.
- CRM / ERP / accounting links
- custom API development
- data sync & migration
- monitoring & error alerts
SaaS & MVP Development
From idea to sellable product: we build the version that proves your concept with real users, fast.
- scope cut to what matters
- working MVP in 4-8 weeks
- billing & user management
- built to scale later
AI-Powered Development
Our method, your advantage: AI tools accelerate every step, senior developers direct and verify every line. Weeks instead of quarters.
- AI-assisted, human-verified
- drastically faster shipping
- tests & reviews included
- savings passed on to you
case_study
A platform that sells, routes and manages. Automatically.
Portal, lead engine and partner network — one system that turns marketing spend into revenue.
Flow-ee sells AI energy managers for homes with PV, heat pumps and wallboxes. We built the platform behind it: a portal that manages customers, admins and staff — orders, status, communication — plus a lead engine that acquires installation partners automatically and routes every incoming B2C lead to revenue.
MULTI-ROLE PORTALORDER MANAGEMENTLEAD ENGINEAUTOMATED OUTREACHPARTNER NETWORKWEB DESIGNSEO
trace lead --through flow-ee-engine
LEADS IN
EMS, photovoltaics and heat pump inquiries from marketing campaigns
QUALIFIED & ROUTED
The system decides the most profitable path for every single lead
OWN TEAM INSTALLS
High-value jobs stay in-house
SOLD TO PARTNER NETWORK
Every other lead becomes revenue too
PARTNER ACQUISITION LOOP
automated outreach to craft businesses
→
onboarded into the network
→
more capacity to buy leads
the result: marketing costs pay for themselves — every lead has a revenue path, none go to waste
the_portal
- Three roles, one system: customers, admins and staff each see their view
- Complete order management: from inquiry to scheduled installation
- Partner portal with onboarding, training material and lead purchasing
- Built to handle scale: the platform grows with the network
the_lead_engine
- Automated outreach acquires installation partners for the network
- B2C leads (EMS, PV, heat pump) qualified and routed automatically
- Installed in-house or sold to partners: every lead has a revenue path
- The system funds its own marketing — and then some
see the front end live: flow-ee.de · platform, lead engine, web design and SEO by KlickNerds
no_lock_in
Your software. Your code. Your call.
Some agencies build software you can never leave: undocumented code, their servers, their terms. We do the opposite, in writing. Full source code in a repository you control, documentation a new developer can actually follow, and a clean handover whenever you want one.
Why? Because lock-in is a substitute for quality. If our work is good, you'll stay. If it isn't, you shouldn't have to.
verify ownership --project yours
source code: your repository
documentation: complete & current
infrastructure: your accounts
exit clause: clean handover, anytime
# standard in every contract. not an upsell.
how_we_build
From idea to running software, in four steps.
01
Discovery
Free · 30 min
Your process, your bottleneck, your idea. We tell you honestly whether custom software is worth it — sometimes it isn't.
02
Concept & prototype
1 to 2 weeks
Clickable prototype and a scoped roadmap with exact costs per module. You see it before you commit to it.
03
Build in modules
2 to 8 weeks per module
The core ships early and goes live. Real usage decides what's next. You can stop after any module.
04
Run & extend
Ongoing or handover
We run it (monitoring, updates, new features) or hand it over cleanly to your team. Your choice, stated upfront.
Software projects from €690, ongoing systems from €420/month. Full process details on the homepage.
faq
Software questions, answered honestly.
When does custom software make sense instead of off-the-shelf tools?+
When your process is your advantage. Off-the-shelf tools are built for the average business; if you work like the average, use them. Custom software pays off when workarounds eat hours daily, when five tools don't talk to each other, when you licence features you don't use, or when your business model needs something no tool offers — like an automated partner network.
How much does custom software development cost?+
Projects start at €690 for small tools, working MVPs typically land in the four-to-five-figure range, and ongoing systems start at €420/month. AI-powered development has cut our build times drastically, and we pass that on. After a free strategy call you get a roadmap with exact costs per module.
How long does it take to build an MVP?+
A working MVP typically ships in 4 to 8 weeks, focused versions in less. We've built a working MVP in 6 weeks using AI-powered development workflows. The trick is scope: we ship the core that proves the idea, then extend based on real usage instead of assumptions.
What is AI-powered software development?+
We use AI coding tools throughout development: generating code, writing tests, reviewing changes. Experienced developers direct and verify everything — AI is the accelerator, not the pilot. The result is the same quality in a fraction of the time, which means lower costs and faster iterations for you.
Who owns the code and the software?+
You do. Full source code, full ownership, no lock-in. If you ever want to take development elsewhere, you can — the code is documented and lives in a repository you control. We'd rather keep clients through good work than through hostage clauses.
Can you integrate with our existing systems?+
Yes, that's usually the point. We connect custom software to your CRM, ERP, accounting, email and whatever else you run — via official APIs where available. A portal that doesn't talk to your existing systems just creates another data island.
What happens after launch? Who maintains the software?+
We offer ongoing care from €420/month: monitoring, updates, security patches and continuous feature development. Or we hand over cleanly to your team with documentation and onboarding. Your choice, stated upfront.
We only have an idea. Is that enough to start?+
Yes. That's what the strategy call and the concept phase are for: we turn the idea into a scoped, priced plan — including an honest assessment of whether it's worth building. Sometimes the answer is a €0 no-build recommendation. That honesty is cheaper than a failed project.
Let's build the tool your business actually needs.
Free discovery call, 30 minutes. You'll leave with a plan either way — even if the plan is "don't build it".
Book a free strategy callor email us: hello@klicknerds.com · we reply within one business day