Built for Digital speed
From mobile apps to cloud infrastructure — we build software that fits the way you already work, instead of bending your processes to fit the software.
We build your app with Flutter — a single codebase for iOS and Android — or with React Native, or fully native where the project calls for it. From time tracking with geo-fencing to a charging and electricity-price app, our projects have passed 500,000 downloads between them.
More on app development →Scalable backends in Go, .NET or Node.js, running on Google Cloud Run. We build the interfaces that connect your app to databases, third-party systems and standards such as DATEX II.
More on backend development →Browser-based applications that feel like native ones, with no detour through an app store. Ideal for internal tools, customer portals and anything that has to run on every device straight away.
More on web apps →When off-the-shelf plugins stop being enough, we connect Flutter straight to the operating system through method channels. Telephony, sensors, geodata and wearables such as Garmin all plug cleanly into your app.
More on integrations →Four delivered projects — from business tools and e-mobility through to a consumer app. More than 500,000 downloads in the stores between them.
Cloud-based time tracking with geo-fencing — built for teams spread across several sites and held to strict compliance rules.
Real-time transparency on charge points and electricity prices, built on AFIR-compliant DATEX II data.
An Android app that works through entire call lists on its own — wired straight into the operating system's telephony stack.
A bike-tracking app where every ride claims real territory on the map — with leaderboards, teams and a live map.
A direct line to the developer, not an agency loop
SB-Techworks is Karim Belkacem's software company in Regensburg, Germany. When you have an app built here, you talk directly to the developer who writes your code — not to a salesperson passing requirements down the line. That cuts out a layer of back-and-forth: answers on architecture, effort and feasibility come first-hand. Projects such as a time-tracking app with geo-fencing, a charging and electricity-price app built on AFIR data, a native Android auto-dialer and the Klaimo bike-tracking app add up to more than 500,000 downloads.
We work remotely with companies across Germany and beyond; on-site meetings are possible by arrangement. You get a transparent cost range before the project starts, agile milestones with a working build at every step — and when it is done, the code is 100% yours, repository included. We reply within 24 hours on working days, and the simplest way in is a free initial consultation.
„Digital excellence comes from good communication and the courage to turn ideas into reality."Karim Belkacem · Owner, SB-Techworks
From MVP to complex app — with a clear cost range
Off-the-shelf software models standard processes. The moment your business works differently, the workarounds start: a spreadsheet running alongside the ERP, notes on paper in the warehouse, data re-typed between the field team and the office. Custom software development answers exactly that — an app or web application built around the way you actually work, instead of forcing your team into someone else's forms. That is what makes digitalisation measurable: fewer manual steps, fewer transcription errors, real-time data where decisions are actually made. And in a competitive market, it is rarely the product that decides the outcome — it is how smoothly the processes behind it run.
SB-Techworks covers the whole path: from the first idea, through an MVP that lets you test your assumptions on the market, to a complex app with a backend, interfaces and native integrations. We build mobile apps with Flutter — one codebase for iOS and Android — and use React Native or fully native code where that fits better. Backends run on Go, .NET or Node.js on Google Cloud Run, with web apps and PWAs for everything that belongs in the browser. Where standard plugins run out of road, we connect straight to the operating system through method channels: telephony, sensors, geodata, wearables. Our time-tracking app with geo-fencing and the Klaimo bike-tracking app were built exactly that way, and together with our other projects they add up to more than 500,000 downloads.
Geography barely matters for the way we work. We are based in Regensburg, Germany, and we work remotely with companies across Germany and beyond — short video calls, clear milestones and a running build at the end of every step, rather than hours lost to travel. You get one point of contact from first enquiry to launch — someone who writes the code, not a layer above it. On-site sessions for a kickoff or a workshop can be arranged whenever they add value; they are not the default, which keeps the day-to-day lean.
On budget we prefer straight answers to "it depends". An MVP or prototype sits between €2,700 and €6,000, a business app with a backend between €7,000 and €13,000, and complex apps start at €20,000. You get a concrete cost range before the project starts, and we invoice along agile milestones, so you can always see what your budget is buying. If you are looking for a mobile app developer in Germany, the free initial consultation is the easiest place to start: an honest read on feasibility, effort and cost — before anything is signed.
Four steps from idea to release — with clear milestones and a working build at every stage, so you always know exactly where your project stands.
Goals, scope and architecture defined properly — including an honest read on effort, risks and the budget range.
Clear, usable interfaces that make sense without a manual.
Frontend, backend and APIs in clear milestones — after every step you get a version you can actually run.
Testing, store release and a clean handover — full source code included.
Every project is different, but you deserve a real number before the first call: three realistic price ranges to orient you — your actual cost range is fixed before the project starts, not after.
Proven technology instead of experiments at your expense — chosen for what your project actually needs.
Cross-platform frontend for iOS and Android
Auth, real-time data and backend logic
Scalable services, built with Go and .NET among others
Direct access to the operating system
Interactive maps and geodata layers
Subscriptions, monetisation and insights
It depends on the scope, but here are ranges you can work with: an MVP or prototype comes in between €2,700 and €6,000, a business app with a backend and user management between €7,000 and €13,000, and complex apps with a lot of interfaces start at €20,000. In the free initial consultation we narrow your project down together, and you get a concrete cost range — before you commit to anything.
That comes down to scope: a lean MVP is ready far sooner than a complex app with a backend and third-party interfaces — anywhere from a few weeks to several months. The rhythm matters more than the total, though. We work in agile milestones, so you get a working version early and see real progress at every step instead of a black box until release. You will get a realistic timeline in the first call.
We clarify the requirements on a video call, then work in milestones with fixed sign-off points. Every interim build lands on your device as a test version, and your feedback goes straight into the next milestone. We answer messages within 24 hours on working days — and you always speak to the developer, never to a project office. On-site sessions for a kickoff or a workshop can be arranged.
We build mobile apps primarily with Flutter — one codebase for iOS and Android — and use React Native or fully native code where that fits better. Backends are built in Go, .NET or Node.js and run on Google Cloud Run. Add to that web apps and PWAs, plus native integrations through method channels for telephony, sensors, geodata or wearables. The choice follows your project, not our favourite technology.
You do — 100%. Every right to the source code sits with you when the project ends, repository access included. You can develop the app further in-house, hand it to another team, or simply keep running it as it is — with no licence fees and no dependency on us. Code held back as leverage or a hidden vendor lock-in is off the table; that is exactly why we fix full code ownership from day one.
Yes. Alongside mobile apps we build web apps and PWAs that run straight in the browser with no app store involved — internal tools or customer portals, for example. And nearly every app needs a backend: we build the APIs, databases and third-party connections in Go, .NET or Node.js on Google Cloud Run. App, web and backend come from one place, which spares you the interface arguments between several suppliers.
Send us a message through the form, or book a slot for your free initial consultation — you will get an honest read on feasibility, effort and cost. We reply within 24 hours on working days.
📅 Book a free consultation Go to contact page →SB-Techworks · Karim Belkacem · Lilienthalstr. 38, 93049 Regensburg, Germany · remote, on-site meetings by arrangement
