Web app development: Web platform, SaaS or customer portal

With a free initial consultation and a joint workshop to clarify requirements and goals.

Timelines depend on the scope. An MVP is often possible in 8-12 weeks; complex platforms take several months.

We bill transparently, either based on effort (with a cap) or through fixed-price modules. Before the project begins, you'll receive a reliable cost estimate.

The choice depends on your requirements. Common technologies include Spring Boot, Vue.js, Angular, Flutter, Kubernetes, and Docker.

Yes. We develop customer portals for self-service, documents, tickets, orders, and contract management. Key considerations include roles, permissions, SSO, integrations, and clear KPIs.

Yes. We handle operations, monitoring, security updates, and ongoing development under clearly defined SLAs.

Yes. We stabilize, modernize, and continue developing existing projects, including through audits, onboarding, and knowledge transfer.

A customer portal is a web- or app-based platform that lets customers access information, documents, orders, tickets, or service features on their own, without having to contact an employee each time. Common content includes contracts, invoices, maintenance records, spare parts orders, and status updates. Customer portals can reduce support effort and improve customer retention.

Costs depend on scope, integrations (ERP, CRM, SAP), and user roles. A simple self-service portal typically costs around €20,000 to €40,000. Complex B2B portals with multiple roles, SSO, API integrations, and a mobile app typically cost between €60,000 and €150,000. Get a realistic estimate in an initial consultation.

A simple web app without complex data logic typically costs around €15,000 to €30,000. Structured web apps with a backend, roles, integrations, and an admin area typically cost between €40,000 and €100,000. Scalable SaaS platforms cost more. An MVP takes 8 to 14 weeks to develop.

A structured B2B portal MVP can be ready in 10 to 16 weeks if the requirements and integrations are clear. More complex portals with multiple roles, SSO, ERP integration, and a mobile app take 4 to 9 months. Defining the scope upfront is crucial.

Custom software is a solution built specifically for a company's needs, unlike off-the-shelf software such as SAP or Salesforce. It's worth considering when (1) no off-the-shelf solution supports your specific processes, (2) unique digital processes can give you a competitive advantage, or (3) you need to integrate existing systems that off-the-shelf solutions don't support.

Software modernization means partially or completely overhauling existing systems that are outdated, difficult to maintain, or unable to scale. Typical measures include refactoring the codebase, migrating to modern frameworks, replacing outdated monoliths with microservices, and improving CI/CD processes and security. The goal is to make the system easier to develop and maintain.

Standard software (e.g., Salesforce, ServiceNow, HubSpot) is often quicker to implement and cheaper for generic requirements. Custom software is worthwhile if specific processes or integrations overwhelm standard solutions, vendor lock-in should be avoided, or data must be stored on your own servers for compliance or GDPR reasons. During the initial consultation, we’ll honestly assess whether a custom solution makes sense.

For mid-sized companies, an initial structured platform (web app, backend, and admin tools) typically costs between €50,000 and €120,000, depending on the scope of integrations, user roles, and scaling requirements. There are also ongoing operating costs. We’ll give you a realistic assessment during the initial consultation, without inflated estimates or unrealistic fixed prices.

Custom platforms are built by agencies with their own backend teams, cloud experience, and proven B2B projects in operation—not by design studios that outsource development. CodeGuides GmbH develops custom web apps, portals, and platforms entirely in-house in Germany, including scalable backends, clear API architectures, and cloud operations on German servers. We’ve completed over 100 projects, and you’ll work directly with the founders. Tell us about your requirements, and we’ll give you an honest assessment of what makes sense.