210,000+ users in our appsBuilding since 2018 · Frechen, GermanyCurrently: 2 slots open for Q3 2026info@thecodecave.de+49 152 04943138Frechen · NRW · DE210,000+ users in our appsBuilding since 2018 · Frechen, GermanyCurrently: 2 slots open for Q3 2026info@thecodecave.de+49 152 04943138Frechen · NRW · DE
// Custom software

Have custom software built — for the 20% your standard software can't do.

Excel lists, shouted handovers and copy-paste between systems cost your team hours every week. We build the software that fits exactly your process: automated, connected to ERP, DATEV & CRM, at a fixed price. And you own the code.

  • Concept + fixed price before you sign
  • Since 2018 — 20+ apps live
  • You own the code, no lock-in
// The problem

Standard software covers 80%. The remaining 20% eat the time.

Your processes run — but they run on Excel lists, shouted handovers and copy-paste between systems. Every day, in every case, paid for with skilled staff hours.

The Excel list that holds everything together

Half the business hangs on a spreadsheet only one person really understands. One wrong filter, one overwritten formula — and nobody notices until the numbers stop adding up.

Copy-paste between systems

Order in the ERP, contact in the CRM, receipt for DATEV: the same data gets entered two or three times. Every transfer costs minutes — and produces exactly the errors that later cost hours.

Skilled staff doing data entry

You hired people for costing, planning and customers. In reality they retype, sort and search. That's the most expensive data entry there is.

// How it works

Four steps from Excel list to software that just runs.

No specification marathon, no black-box development. You know before the first euro what gets built and what it costs — and then you see every interim state.

  1. Process analysis

    On site or remote: we look at the process that eats time — which systems, which manual steps, which duplicate work. Afterwards you know where the hours get stuck.

  2. Concept + fixed-price quote

    You receive a written concept with a fixed price — before you commit. In black and white: what gets built, what it costs, when it's done.

  3. Build in short sprints

    We deliver in short sprints with interim releases. You see every iteration, approve or steer — no surprise at the end.

  4. Handover, training & operation

    Documented handover, training for your team, operation and maintenance if you want it. The code lives in your repository from day one.

// Done-for-you

You bring the process — we deliver the finished software.

You don't need an IT department or a hundred-page specification. You bring your process and your day-to-day knowledge — we take care of the rest.

You provide

  • The process that runs on Excel, shouts and copy-paste today
  • Access to the systems that should be connected

We deliver

  • A process analysis with an honest cost-benefit assessment
  • A concept and fixed-price quote — before you commit
  • Software with integrations for ERP, DATEV, CRM & co.
  • Handover with documentation, training and optional operation
// Three sizes

Patch, module or platform — big is rarely the answer.

We decide together which size fits. Most requests we solve with the first or second — only a fraction needs the third.

Patch

Fill the gap.

One concrete automation next to an existing system: an importer, an integration, a small capture tool. Your existing system stays untouched — we build alongside it.

a few weeks · fixed price

Module most common

The tool that closes the system gap.

Your standard software handles the core but not the special requirement of your business. We build the missing module — connected to your existing systems, cleanly handed over.

4–12 weeks · in sprints

Platform

Your own core system.

Your business model calls for software of its own: customer portal, industry solution, internal core system. With discovery up front, released in phases.

3–9 months · in phases

// Use cases

Three levers that free up hours in almost every business.

No invented references — these are the patterns we build. Two of them run as productised solutions: our document bridge and the SykaSoft integration.

Automation

Recurring workflows run without anyone touching them: reports build themselves, data moves on automatically, reminders go out on time. Your team only steps in when something jams.

Digitisation

Paper, Excel and island solutions become one clean system: one data foundation, clear responsibilities, traceable cases — from the tablet on the shop floor to the desk in the office.

Streamlining

Duplicate entry goes: integrations with ERP, DATEV and CRM make sure data is entered once and arrives everywhere. That's exactly how our SykaSoft integration works — in production, in the trades.

// Why us

A studio that runs its own software — no body leasing.

We don't rent out developer hours, we deliver results: since 2018, with 20+ apps live and 210,000+ users. And with automations in daily production — from our document bridge to the SykaSoft integration.

2018
in business since
20+
apps live in the stores
210,000+
users across our apps

Automations in production

Our document bridge and the SykaSoft integration run daily in real businesses. We know integration reality from daily work — not from a brochure.

Results instead of hours

No body leasing, no open-ended hourly budget: you buy software that fits your process — at a fixed price, with the responsibility on us.

Custom software from Frechen near Cologne

German contracts, one contact, short paths. Process analysis on site if you like — we speak the language of your business, not just IT's.

// Quality & ownership

Your code. Your data. No lock-in.

Custom software is an investment — it must not make you dependent. We build so that you could switch at any time. Most stay anyway.

You own the code

In your repository from day one, cleanly documented. No proprietary frameworks, no hidden dependencies — any other provider can take over.

Documentation & handover

Technical documentation, training for your team, an orderly handover. Your software is nobody's private knowledge — not even ours.

Plannable further development

New requirements are quoted as fixed-price packages, maintenance as a predictable monthly fee. Both optional — no lifetime contracts.

// Investment

A fixed price instead of an open hourly budget.

You learn the price before you commit: after the free intro call you receive the concept and fixed-price quote in writing. Deposit on order, the rest on handover — no budget on a hunch.

Concept + fixed price

After the intro call you receive a written concept with a fixed price for your size — patch, module or platform. Only then do you decide.

Deposit on order

One part on order, the rest on handover. Delivered in short sprints — you see interim states before the next instalment is due.

Maintenance for a monthly fee

Operation, updates and support for a predictable amount — optional, cancellable, no surprises on the annual bill.

Fixed price after a free intro call — no hourly rate, no budget on a hunch.

Free intro call
// Guarantee

Concept and fixed price — before you commit.

We carry the risk, not you.

Concept first, contract second

You see in writing what gets built, what it costs and when it's done — before you sign. No specification poker, no blind flight.

An honest recommendation

If standard software solves your problem for less, we say so in the intro call — and recommend it. Better an honest no than a project nobody needed.

// FAQ

Frequently asked questions

What businesses ask most before getting started — answered briefly and honestly.

  • What does custom software cost?
    Honestly: it depends on the size. A patch — a small automation or integration — usually lands in the low five figures, a module in the mid range, a platform above that. You get the fixed price for your case in writing after the free intro call — before you commit.
  • Is it worth it compared to standard software?
    If standard software solves your problem: buy standard software — we’ll tell you exactly that in the intro call. Custom software pays off for the 20% no standard covers: the process your team has bridged manually every week for years. Rule of thumb: two saved hours per week per person usually pay back a small project within quarters, not years.
  • How long does development take?
    A patch: a few weeks. A module: typically 4–12 weeks. A platform: several months, released in phases. We deliver in short sprints with interim states — you see progress instead of waiting for one big release day.
  • Who owns the code?
    You do — from day one, in your repository, cleanly documented. No proprietary frameworks, no lock-in. Any other provider can take over; most clients stay anyway.
  • What about maintenance and further development?
    If you want, we run operation, updates and support for a predictable monthly fee. New requirements are quoted as fixed-price packages. Both optional — no lifetime contracts.
  • Can you connect to our ERP, DATEV or CRM?
    Yes — that’s our daily work. Our document bridge and the SykaSoft integration run in production in real businesses. If your system has an API, we use it; if it doesn’t, we find other routes — file import, database replica, RPA.
  • What if we already have a half-finished solution?
    It happens more often than you’d think. We take an honest look: what’s solid, we keep — what isn’t, we replace deliberately. Sometimes building on is cheaper, sometimes a clean rebuild. The concept tells you in black and white before you decide.
// Get started

Tell us about the process that runs on Excel.

A free intro call is all it takes. We tell you honestly whether custom software pays off, which size fits — and what it costs.

Prefer a quick message?

We’ll get back to you within 24 hours on business days — no obligation.

Call Enquire