Trefnus
Reliable business software, without subscriptions
One-time purchase. No lock-in. Data stays on your device.





Why Trefnus is different
Offline Functionality
Keep working anywhere with full offline functionality. Our apps ensure your business continues uninterrupted, even without an active internet connection.
Features
Designed with only the essentials, our apps maximise efficiency and focus. No unnecessary features, no AI clutter, just what your business truly needs.
Data Security
All your personal and business data stays securely on your device. Our apps prioritise privacy, giving you full control and complete peace of mind.
Value for Money
Access powerful business tools for a single low cost. No subscriptions, no hidden charges, just simple, straightforward value that suits every business budget.
Software for your business
Smart asset, compliance and maintenance management system
Benefits:
✓ Stay compliant and organised
✓ Track assets and contracts
✓ Record service visits
✓ Plan work with calendar, Kanban & Eisenhower
✓ Access smart insights
Powerful, intuitive Point of Sale system for growing businesses
Benefits:
✓ Process sales and manage inventory
✓ Handle receipts, discounts, and customer data
✓ Offline-ready
✓ Multi-till data sync
✓ Access reports and practicle insights
Getting started
Start using your business app in minutes. Our Progressive Web Apps work across modern devices and operating systems. They are simple to purchase, quick to install and ready to use straight away. No app store required.
Purchase
Make a one-off payment for your app. No subscriptions or hidden fees. You pay once and it is yours to use.
Install
Open the app link in Google Chrome and select the Install button. The app is added to your device like a native app.
Use
Enter your email address to verify your device and start using the app immediately to manage your business on the go.
Who We Are, Where We Came From, and Where We’re Headed
We started out like many businesses, paying for software subscriptions for almost everything we did. Over time, the cost, complexity and constant dependence on third-party platforms became frustrating and restrictive.
So we built our own tools. We focused on creating practical, reliable business apps that did exactly what we needed, without ongoing fees or unnecessary features. Using modern web technology, we designed tools that were simple to access, easy to maintain and built to last.
Today, we offer those tools to you for a fair, one-off payment. This approach is a core principle of our business and it shapes every product we make. We believe software should work for you, not lock you into endless subscriptions, and that belief will continue to guide everything we build in the future.
What is a PWA
A Progressive Web App, or PWA, is a modern app that installs directly from the web and works across phones, tablets and computers. Unlike native apps, it does not require an app store download or manual updates, and it uses less storage space. PWAs install in seconds, stay up to date automatically and continue to work even with limited or no internet connection. They offer the convenience and feel of a native app, with easier access, broader compatibility and lower ongoing effort for your business.
Frequently asked questions
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Email: apps.trefnus@gmail.com













