techone --build=custom-app --connect=erp
Custom Applications
B2B portals, business apps, mobile solutions connected to your ERP.
From workshop through development to production.
Challenges We Solve
Outdated websites and missing mobile solutions hold you back
Outdated Website
Your website looks dated, doesn't work on mobile and you're losing customers. Competitors are a step ahead.
No Mobile Solution
Technicians or sales reps need access to data in the field but have no way to get it. Everything goes through phone calls and manual retyping.
Slow Development
Every change takes weeks. Your vendor is unavailable and you can't react quickly to internal requests.
Can't Handle More Users
When user count grows, the app slows down or crashes. The current setup wasn't designed to be extended easily.
Our Solution
From design through development to measuring results
Web Applications
From marketing websites to full-featured web apps with user roles and admin panels.
- Responsive design optimized for SEO
- Content management without a developer
- Works on all devices
- Integration with your internal systems
Mobile Applications
iOS and Android. Offline mode, push notifications and access to company data in the field.
- One app for both iOS and Android
- Works without internet connection
- Push notifications and automatic updates
- Access company data from anywhere
Connected to Your Systems
The app works with data from your ERP, CRM or warehouse. No manual re-entry.
- Read and write data directly from/to your ERP
- Real-time or batch data sync
- Single sign-on via company accounts (SSO)
- Connect to existing databases and APIs
Hosting and Operations
We deploy your app to the cloud and keep it running. Scaling, backups, monitoring.
- Azure or Hetzner depending on project needs
- Automated backups and disaster recovery
- CI/CD pipeline - new version without downtime
- Monitoring and alerting tailored to your app
Web app, mobile app, or both: how to decide
Most companies face a basic question: invest in a web app, a mobile app, or both? The right choice depends on who will use the product and how.
A web application is ideal for broad reach and easy maintenance. Users don't need to install anything, a browser is all it takes. For internal business systems, customer portals or B2B platforms, the web is usually the best choice. Example: Medicalface, a clinic website with online booking.
A mobile app makes sense when you need camera access, GPS or offline mode. Field technicians, sales reps on the road or logistics teams typically need mobile. Example: Pramos, a travel tracking app with GPS for technicians.
PWA is a compromise: a web app with mobile behavior. It works offline, supports push notifications and can be added to the home screen. If you don't need hardware access, PWA saves both budget and time.
Application Development: From MVP to Enterprise Product
Starting with a full-blown enterprise solution from day one is one of the most common mistakes in digital product development. Instead, we recommend an MVP-first approach: first validate that the product solves a real problem, then invest in scaling.
MVP (Minimum Viable Product) does not mean a low-quality product. It means a functional application that covers key scenarios and allows you to collect feedback from real users. We typically build an MVP in 8–12 weeks using iterative sprints, so you have ongoing visibility into progress.
After validation comes the growth phase: we add features based on data and feedback, optimize performance and expand the architecture. At this stage, the need for cloud migration often arises so the application can handle growing load without downtime.
Iterative development saves money and time. Instead of investing tens of thousands into features nobody uses, you build a product based on real needs. The result is a product that covers what users actually need and can be extended without rewriting from scratch.
Building apps that connect to your ERP
Most custom apps are built as standalone systems. Data ends up being copied between the app and ERP manually, exported to Excel or synced via overnight batch jobs. That means delays, errors and double work.
When we design an application, ERP integration is part of the architecture from day one. Field technicians at Pramos record trips in a mobile app and the data flows to their ERP automatically. At Medicalface, a single application replaced five separate spreadsheets the staff used to run the clinic.
We work with Dynamics 365, SAP, Oracle and legacy ERPs via REST API, file exchange or direct database access. The right approach depends on what your ERP supports - we figure that out during the discovery workshop.
Choosing a technical partner for app development
Choosing a partner for custom application development is a decision that affects your project for years. It is not just about who writes the code. It is about who understands your business, can design the architecture and knows how to connect to your systems.
Ask about experience in your industry and tech stack. How do they handle ERP integration? Do they have reference projects of similar scope? What does the partnership look like after launch - who handles operations, fixes and new features?
We always start with a workshop where we map requirements and design the architecture. Development runs in iterations - after each cycle you get a working version to test. After launch we take care of the app: monitoring, backups, updates. If you also need process automation, see our automation and AI service.
How We Work
First, we understand your processes. Then we propose solutions.
Discovery Workshop
We map your goals, users and key features. Define how we'll measure success and prepare initial screen designs.
Design and Prototype
We design the look and feel of the application. Create interactive prototypes and test them with real users.
Iterative Development
We develop in two-week cycles. After each cycle you get a working version to test.
Testing and Quality
Automated and manual testing throughout development. Before launch, you and end users verify everything works.
Launch
We deploy to production with zero downtime. Monitor operations and react to any issues.
Ongoing Support
Fixes, new features, performance optimization and monitoring.
Frequently Asked Questions
How much does web or mobile app development cost?
It depends on scope, number of features and integrations. We start by defining MVP so you don't invest in features you don't need. We provide a detailed quote after a free initial consultation.
How long does development take?
Simple website: 6–8 weeks. Web application: 3–6 months. Mobile app for iOS and Android: 3–6 months. We start with the most important features and add more over time.
Do you build mobile apps for iOS and Android?
Yes. Offline mode, push notifications, access to data in the field. Example: Pramos, a mobile app for technicians with GPS and automatic data transfer to their ERP.
How does custom application development work?
We start with a workshop to map out what you need. We propose a solution and estimate cost and timeline. We develop in two-week sprints; after each one you get a working version to test. You see progress throughout.
What do you need from us at the start?
Just describe what problem you're solving and who it's for. You don't need a technical specification. We define scope, priorities and measurable goals together at the workshop. We handle the technical side.
Do you support the app after launch?
Yes. Bug fixes, new features, monitoring, backups and security updates. We offer monthly SLA packages based on the level of support you need.
Do you track results after launch?
Yes. We set up analytics and track key actions from the start. After launch we evaluate what users actually do and propose changes based on data, not assumptions.
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