A great technology partner! The team has huge expertise, and their commitment shows at every step. Technical issues disappear in no time, and the whole collaboration runs completely smoothly. Highly recommended!
Marcin Jasiak
Owner, Summer Club
Web app
A web app that automates the work of your business
We build custom systems, dashboards and online tools that organize processes, save your team time and grow with your business.
Companies and startups that trusted us
- Planinvest.io
- Gruntster.eu
- Regenpol.pl
- Plazmetal.pl
- SoliderIT
- ErykPlumber.uk
- PaczkiMielec.pl
- SolariumIlawa.pl
- KameryMielec.pl
- OSPWolaMielecka.pl
- Altholz.com
- Meblokos.pl
- Gros-Group.com
- KozieFrykasy.com
Why an app
A tool tailored to your business
An app tailored to your processes
Instead of bending your business to fit software, we build the app around how you actually work.
Less manual work thanks to automation
Reports, notifications and document workflows run on their own, freeing your team for what matters.
Integrations with the tools you use
We connect the app to your CRM, accounting and payments via API, with no manual retyping of data.
Data security and access control
Roles, permissions, encrypted connections and backups protect your company’s and clients’ data.
An intuitive interface without long training
We design clear screens so your team can work efficiently in the app from day one.
Runs in the browser on any device
No software to install: the app works on desktop, tablet and phone, in the office and in the field.
A fast launch of the first version
We start with the key features so the app pays for itself as soon as possible, then we build it out.
A scalable architecture ready for growth
We build on modern technologies and Docker containers, so the app grows with your business.
First we learn how your team works and where you lose the most time. Only then do we design features that will genuinely help.
A clickable Figma prototype lets you test how the app works with your team before you invest in development.
You talk to the developers and designers building your app. No middlemen, no broken telephone, and quick replies.
We work in short stages and regularly show working features, so you always know where the project stands.
Why ONEXO
A made-to-measure app,
not off the shelf
Four principles we follow in every app we build.
What’s included
Everything a good
web app needs
From analysis to launch and growth, in clear, planned stages.
Process analysis
Workshops with your team, a process map and a prioritized list of features.
UX/UI prototype
A clickable Figma prototype where you test the app before development.
Frontend and backend
Modern, typed code, a clean architecture and tests for key features.
Integrations and API
Connections to your CRM, accounting, payments and the tools you already use.
Deployment and infrastructure
Docker containerization, a secure server, backups and monitoring.
Maintenance and growth
Fixes, updates and new features added as your business grows.
Client testimonials
See what our clients say about us
The end result exceeded my expectations: the website is modern, clear, attractive and very intuitive for users. An added bonus is the excellent integration with Facebook and booking.com, which makes it much easier to stay in touch with customers and increases the visibility of the offer online. I recommend them to anyone who wants to present their business or services professionally online and effectively reach a wide audience of potential customers or, as in my case, guests. Complete professionalism and truly excellent workmanship.
Magda Czarnecka
Marina Apartamenty Iława
Working with onexo.pl is all substance, no fluff. They created a modern, elegant website for Meblokos that perfectly reflects the quality of our joinery services and finally shows off photos of our work properly. We wanted a professional, premium look, and the onexo team delivered 100%. Smooth communication, a great sense of aesthetics and a project completed without unnecessary delays. Definitely recommended!
Jacek Sokół
Owner, Meblokos
On behalf of the entire OSP Wola Mielecka unit, we sincerely thank the onexo.pl team for creating our new website. We’re very happy with the result: the website is clear and fully meets our needs. We greatly appreciate that the project was completed entirely free of charge, as selfless support for our local fire brigade. It’s a great help to us. We warmly recommend working with onexo!
OSP Wola Mielecka
Volunteer Fire Department
Tools
The technologies we use
to build your app
We work with professional development tools. Typed code, containerization and a modern workflow mean fewer bugs, easier growth and full control over your app.
Other services
Need
something more?
An app often needs extra support. We’ll design a product website and visual identity for it, and after launch we’ll take care of security and further development.
- Landing pageOne page, one goal: an effective campaign and more leads
- Video productionEditing and preparing videos for publishing online
- Visual identityA logo, colors and typography that set you apart
- Company websiteA brand showcase that builds trust and generates inquiries
- Online storeEasy shopping, fast payments and simple order handling
- Social media managementPlanning and publishing content on social media channels
A website mainly presents information, while an app lets you work with data: manage orders, clients, documents or reports, with accounts and permissions.
We usually deliver the first version with key features in 6–12 weeks. We add further modules in stages, based on agreed priorities.
Yes. We integrate apps via API with CRMs, accounting systems, payments, inventory and other tools your company uses.
We use roles and permissions, encrypted connections, regular backups and updates. Only those who should have access to the data do.
After acceptance we hand over the rights to the code and the documentation, so you can develop the app with us or with any other team.
Yes, and we usually recommend it. We launch the most important features first, gather your team’s feedback, then grow the app in stages.
FAQ
Frequently asked questions
Didn’t find your answer?
Tell us what you need, and we’ll get back to you and suggest the best solution.
Start your project today
that’s the end, so now…
Tell us
about your project.
We’ll help you define the scope, budget, schedule and next steps.