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Custom software from Germany for international teams
Odoo, apps, AI & legacy – built in Germany
We help mid-sized and international companies ship Odoo ERP/CRM, mobile apps, AI in operations and legacy modernisation. Development is Made in Germany (Leer, East Frisia), GDPR-aligned, at Transparent pricing. Start with a free consultation or jump to cost calculators.
Since 2010 we have completed more than 250 projects for over 99 B2B clients. That rests on more than 15 years of experience from Leer, East Frisia, and a 5.0 out of 5 star rating (As of: August 2026).
30 min strategy call – 100% free & non-binding
Made in Germany
GDPR compliant
Since 2010
What international buyers look for first
We focus the English site on export-ready topics: Odoo, legacy modernisation, apps and AI. Pick your situation and go straight to the matching solution or service.
Odoo ERP & CRM
Implement or customise Odoo for mid-sized companies – without enterprise lock-in.
Explore Odoo servicesLegacy modernisation
Replace brittle Delphi, VB6 or dated stacks with maintainable software Made in Germany.
Modernise legacy systemsApp development
iOS, Android and cross-platform apps for operations, customers and field teams.
Plan an app projectAI & automation
Practical AI in operations – chatbots, copilots and workflow automation.
Start with AIIntegration & APIs
Connect ERP, CRM and shop systems so data stays consistent.
Fix integration chaosMVP for new products
Ship a testable product in weeks – clear scope, EU hosting, GDPR-aligned.
Build an MVPOur promises
What you get with Groenewold IT Solutions
Software Made in Germany
All software is built by full-time employees in Germany – no offshoring, no freelancer chains. Our team in Leer (Lower Saxony) is your dedicated point of contact from first requirements to production – GDPR-compliant and in your time zone.
You own the source code
You receive the complete source code – once paid, it belongs to you. No vendor lock-in, no hidden licensing traps, full long-term control over your custom software.
What we deliver for international clients
Most engagements centre on five primary commercial offers: custom software development, AI integration and consulting, legacy modernization, API development and integration, and automation. Together they cover how mid-sized and enterprise teams replace manual work, connect systems and stay compliant—without vendor lock-in. Secondary topics—web and mobile products, deep-dive articles by theme—are linked below when they support these pillars.
Also available: Web & mobile development for product UX and channels that sit alongside your core systems; AI knowledge base to make internal expertise searchable next to integrations; software development articles, app development, ERP & CRM, and API & integration on the blog for ongoing learning.
Schedule a call to map your priorities—Made in Germany, EU-focused data handling, one accountable partner from discovery to operations.
Commercial next steps
Digital solutions from one partner
Groenewold IT Solutions supports organizations with web app development, mobile apps, AI and legacy modernisation. We focus on measurable results, clear communication, and a dedicated contact from consulting through to operation – engineered in Leer, East Frisia.
Whether you need APIs, AI integration, or legacy modernisation: we don't deliver random off-the-shelf products but align architecture and delivery with your processes and budget. Made in Germany, with your data in the EU.
For a focused read on individual software development for the mid-market with emphasis on tailoring and integration, follow the dedicated service page – this home page remains your entry to the full services portfolio, our solution clusters and industry pages.
Featured in
Our IT solutions – and how we can help you
Our Team – Sales and Project Management
Dipl. Inf. Björn Groenewold
CEO
Expert in business and IT strategy. Software practice since 2009.
Dipl. Inf. (FH) Thorsten Frieling
Project Manager
Experienced project manager. Focus on delivery and customer satisfaction.
Book an appointment directly
No long back-and-forth. On the scheduling page, simply pick the next free slot – the first conversation is free and non-binding.
5.0 on Google · 250+ successful projects · Made in Germany
Björn Groenewold – Managing Director
Our Clients
We work with companies from many sectors. We build solutions that fit their needs.
BRUNS DATA SCIENCE
Project references
Selected case studies from our project work
Concrete examples of web apps, mobile, AI and legacy modernization – with measurable outcomes and detailed case studies.
Book a free consultation
Talk directly with Björn Groenewold about your project – software, apps, AI or legacy modernisation. The first call is free and non-binding.
Björn Groenewold – Managing Director
Our Clients from Public Sector and Education
We deliver secure, reliable solutions for the public sector and education.
Our Services
Software development, web and app, AI, consulting – all from one partner.
View Our Services →Our Solutions
Typical project triggers from MVP and ERP to customer portals – with scope and entry points.
Browse solution clusters →Industry Solutions
Sector-specific software for manufacturing, healthcare, retail, logistics and the public sector.
View industries →Our References
View successful projects we have implemented for our clients.
View Our References →About Us
Our company, team, values and how we work.
About Groenewold IT Solutions →Our Technologies
Discover the modern technologies and tools we work with.
View Our Technologies →Our Blog
Read current articles and insights on IT topics and trends in software development.
Read Our Blog →Contact
Get in touch with us and let's talk about your project.
Get in Touch →Pick the right entry point
Different pages serve different decision phases: commissioning, orientation, option selection or trust validation.
Commission software development
Service scope, delivery model and project fit for active buying intent.
Review MVP and solution clustersTypical project triggers with scope, architecture and delivery entry points.
Industry solutions for manufacturingSector entry points with process, integration and operations focus.
Topics for orientationCluster-based background before committing to budget and delivery setup.
Compare technologies and delivery optionsDecision support for architecture, sourcing and make-or-buy trade-offs.
Web-app references from real projectsProject evidence to validate delivery quality before you mandate work.
As of: May 2026
Book a free consultation
Talk directly with Björn Groenewold about your project – software, apps, AI or legacy modernisation. The first call is free and non-binding.
Björn Groenewold – Managing Director
From our blog
Latest from our software blog
Digital Transformation: Leadership and Change Management as key to success
Digital transformation is more than just the introduction of new technologies. It is a profound change process that affects companies of all sizes. Especially for small and...
Digital Transformation: The Power of Partnerships and Ecosystems
Digital transformation is no longer an option for small and medium-sized enterprises (SMEs), but a need to remain competitive. But the way to the digital future...
Topics: IoT · AI & Chatbots · Software rescue
More cost tools & ROI
Estimate budgets, compare options or project ROI – continue here for the full calculator hub and ROI tools.
Frequently asked questions
What you should know about custom software from Germany
Costs & budget
When was Groenewold IT Solutions founded?
Groenewold IT Solutions has operated since 2010, based in Leer, East Frisia. Engineering is done in Germany with no offshoring. More: https://www.groenewold-it.solutions/en/about
About the companyHow is software development billed?
Fixed price after a requirements analysis, or time and materials with a monthly activity report – without role-based surcharges. Details: https://www.groenewold-it.solutions/en/pricing
Pricing overviewWhat does custom software development cost?
According to the software development cost calculator, the non-binding project orientation is EUR 10,332 – 372,623 excl. VAT. The range runs from a simple internal specialist tool to a complex B2B SaaS platform with integrations, migration, compliance, extras and accelerated delivery. A binding offer follows the requirements analysis. Hosting, maintenance and ongoing development may be added depending on scope. After a free intro call we quote transparently, often as a milestone-based fixed price. Calculator: https://www.groenewold-it.solutions/en/costs/software-development.
Open cost calculatorsDo you work with fixed prices?
Yes, for a clearly defined scope. For agile work with evolving requirements we use time and materials with transparent time tracking. Hybrid models (fixed price for the base, T&M for extensions) are often the best fit.
Are there hidden costs?
No. Quotes state what is included and what is not. Change requests are discussed before they are billed. There are no surprise line items on the invoice.
Cost estimate for your project?
In a short conversation we give a realistic assessment.
Björn Groenewold – CEO
Timeline & process
How long does software development take?
A lean MVP is often shippable in 8–16 weeks. Mid-size systems with several modules and integrations typically take 4–8 months. Complex ERP, AI platforms or multi-tenant SaaS can take 12–24 months. Two-week sprints deliver usable increments, not only a big-bang release. Phases: https://www.groenewold-it.solutions/en/duration
Project duration guideHow does the collaboration work?
After an initial meeting we produce a concept, then develop in two-week sprints with regular demos. You keep visibility and can give feedback early. Transparency and direct communication are part of the delivery model.
Can we start on short notice?
Often yes. Small projects or extensions can start within a few days. Larger programmes typically need 1–2 weeks lead time for concept and team setup.
Quality & location
Do you only develop in Germany?
Yes. The team is based in Leer, East Frisia, and we do not use offshore teams. That supports GDPR-aligned data handling, German-language communication in your timezone, and short feedback loops. Location: https://www.groenewold-it.solutions/en/locations/leer
Leer location pageWhat technologies do you use?
We pick tools for the job: React, Next.js, Laravel, .NET, Delphi, Flutter, Python and more—matched to your landscape rather than a dogma. Overview: https://www.groenewold-it.solutions/en/technologies
Technology catalogueHow do you ensure quality?
Through code reviews, automated tests (unit, integration, E2E), CI/CD pipelines and security checks. Quality work sits in every sprint, plus documentation for long-term maintainability.
Questions about our approach?
We'd be happy to explain how we would implement your project.
Thorsten Frieling – Project Management
Support & maintenance
Do you also provide maintenance and support?
Yes: long-term contracts with SLAs, regular updates and emergency support. Many clients have stayed more than 10 years. Service: https://www.groenewold-it.solutions/en/services/software-maintenance
Software maintenance serviceDo you also take over existing software?
Yes, after a code audit. We take over third-party software, stabilise it, document it and continue development. We also recover failed projects from other vendors.
Software rescueCan we develop the software ourselves later?
Yes. You receive complete source code and documentation. We hand over cleanly and can train your team. You are not locked in—though many clients choose to stay.
Ready for your project?
Let's talk about your requirements.
Björn Groenewold – CEO
Overview
Our core competencies
From custom software development to industry solutions and AI: key service, solution and industry pages – reachable directly from the homepage.