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Trefnus

Trefnus logo

Reliable business software, without subscriptions

Pay once. Work offline. Keep control of your data.

Pie chart titled Activities by Category showing Fire, Electrical, Water, Health, Mechanical, Building, Security. Vibrant colors.
Project management software interface showing a Gantt chart with tasks and timelines. Bright pink header, blue buttons, and task details.
Bar chart shows staff workload distribution. Blue for conformity activities and purple for to-do tasks across six members.
Line graph showing cost comparisons over time for four options. Colored lines intersect a break-even point. Key: op1 (blue), op2 (green), op4 (yellow), op3 (red).
Risk status chart showing red for "Open" (2, 50%), orange for "Mitigating" (1, 25%), and green for "Closed" (1, 25%).
Grid pattern

Software for Growing Businesses

Trefnus CMMS Icon

MAINTENANCE & COMPLIANCE

Trefnus CMMS

Smart asset tracking, scheduled maintenance and strict compliance control in one offline system

✔ Stay compliant and organised

✔ Track assets and contracts

✔ Record service visits

✔ Plan with calendar, Kanban & Eisenhower

✔ Get actionable insights

£49 one-time

EXPLORE ➜
Trefnus POS Logo

POINT OF SALE

Trefnus POS

Fast, reliable, offline-first point of sale with stock control and clear reporting

✔ Process sales and manage stock

✔ Handle receipts, discounts and customers

✔ Work offline

✔ Sync across multiple tills

✔ View sales & VAT reports

£24 one-time

EXPLORE ➜
Trefnus Projects Logo

PROJECT MANAGEMENT

Trefnus Projects

Plan, track and deliver projects with clarity and control

✔ Plan and deliver in one workspace

✔ Build timelines with dependencies

✔ Track progress on Kanban boards

✔ Manage risk with RAID logs

✔ Link planning to daily delivery

£35 one-time

EXPLORE ➜
Trefnus Staff Logo

STAFF & LEAVE

Trefnus Staff

Leave, absence and holiday tracking for team leaders

✔ Track annual leave and sickness
✔ Build team rotas
✔ Review absence with Bradford scoring
✔ Handle requests with leave cards
✔ Access clear team reports

£35 one-time

EXPLORE ➜
Trefnus Training Lgo

TRAINING & CERTIFICATION

Trefnus Training

Staff training and certifications management

✔ Track training and development
✔ Manage certificates and renewals
✔ Monitor progress across teams
✔ Get reminders before expiry
✔ Generate compliance & progress reports

£29 one-time

EXPLORE ➜
Trefnus Visitor Logo

VISITOR MANAGEMENT

Trefnus Visitor

Real-time visitor management, check-in flows and instant emergency roll calls.

✔ Track on-site presence in real time
✔ Tailor check-in by visitor type
✔ Access emergency roll call data
✔ Notify hosts by email, Teams or Slack
✔ Keep visitor data under local control

£39 one-time

EXPLORE ➜
Free business template library for SMEs with downloadable Word, Excel and PDF templates on a clean desk beside a laptop.

FREE

BUSINESS

TEMPLATE LIBRARY

For SMEs

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

Complete data control. Your information never passes through our servers. Keep it on your device, sync directly via P2P, or use your own Dropbox. The choice is yours.

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.

Desk with laptop showing Knowledge Hub, coffee, plant, notebooks, charts, and sticky note in a business planning workspace.

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.

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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.

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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.

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.

Explore

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.

Frequently asked questions

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