Mac
For Mac with Apple Silicon. The notarised DMG contains the native ewws app. Download, install and connect to the demo.
Get to know ewws. Right in the app.
Download the app for your device and explore ewws with public demo access. For your own business, set up the server and database next.
The right app for your device.
Download your app, then sign in with the demo access below. You do not need your own server to explore ewws.
Desktop version 4.0.4
Windows
For Windows 10 and 11. The ZIP contains the native app as an MSIX package, the certificate and the installation script.
iPhone and iPad
The app is free. It connects to your ewws server - or to the public demo, if you want to get to know ewws first.
Your first look around ewws.
Explore customers, orders and reports with sample data. Public access is read-only and works in all three apps.
How to sign in
- Open the installed ewws app.
- Enter the server, tenant and credentials from this section in the sign-in window.
- Sign in and explore the workspaces with sample data.
Try it right away: public demo
A complete Swiss fiduciary dataset with accounting, payroll, dunning and register. The same credentials work in the iOS app and at the sign-in of the Mac and Windows app. The demo user has read access to all areas, there are deliberately no write rights.
- Server:
https://demo.pro-business.ch/api/v1 - Tenant:
demo - User:
treuhand - Password:
Treuhand-Demo-2026
Try your own workflow.
To enter your own data, you need a configured ewws server with a database and a test tenant with write access. The public demo remains read-only.
ewws server (Docker)
The ewws server remains customer-bound: you receive it together with your licence as installation media for Linux, Windows, macOS or Docker. The public demo is all you need to get to know ewws.
Enquire about a server and your own trial- Define the scope: choose a sample case, the required edition and the work devices involved.
- Prepare the test environment: clarify server access, licensing and setup. Agree who will operate it and manage backups, and what costs apply.
- Check with sample data: enter the sample case, compare the result and resolve open questions before migrating your business data.
Describe your business, the workflows you want to try and your devices in your enquiry. This helps clarify requirements, responsibilities and effort.
Prepare your rollout and data migrationDirect download
The Mac and Windows apps are freely available, signed, with the Mac app notarized by Apple. No request, no registration: download, install, sign in with the demo.
Cleanly separated steps
Installation, database, activation and productive use stay clearly separated from each other.
A reliable update path
Later versions and installers stay reachable through the same download area.
Important before productive use
- The desktop installer installs the application, not the productive database.
- Single-workstation versions are suitable for the start on a single machine.
- The data foundation stays PostgreSQL and can later be taken over into an extended operating model.
Expansion and productive use
- Several workstations or central use need the server/API and a clear network address.
- License, activation, users, roles and master data are set up after the technical installation.
- Only then does productive operation begin with real data; updates do not replace the initial commissioning.
License and activation
The apps are free to download. ewws becomes productive with your own ewws server and your edition licence; after installation the server runs with full functionality for 30 days.
Updates
New versions and release notes stay reachable through the same download area.
Installation order
The download is the first step. ewws becomes productive only when the application, database, license, roles and operating model are prepared in the right order.
Download the installer
Download the macOS DMG or the Windows MSIX package and use it to install the native app on your workstation. The iOS app is free in the App Store.
Provide the database
The productive PostgreSQL database is not part of the desktop installer. It is set up and backed up separately.
Define the operating model
A single workstation, several workstations or public cloud have different technical requirements.
Set up the server and API
The ewws server with API is a mandatory component. The native apps for Mac, Windows, iPhone and iPad work exclusively against the ewws server. Server operation under macOS, Windows, Linux or in your Swiss public cloud.
Activate the license
The license file unlocks your edition with all modules. Without a license, ewws runs for 30 days in trial mode with all functions, then with the scope of the Start edition. You lose no data and no setup when switching.
Set up users and roles
Only with users, roles, master data and a rollout does a productive ewws environment arise.
Your impression counts
Testing ewws? Your feedback goes straight to the maker.
No ticket system without an address, no anonymous queue: every response from testing is read personally by the product owner and answered by e-mail. Good ideas flow into the roadmap, reported bugs are fixed with priority.
Give feedback
What convinces you, what is missing, what gets in the way? Three sentences are enough, and no company name is required.
Report a bug
Something does not behave as expected? Briefly describe what you expected and what happened. Platform and app version help with the assessment.
The download makes getting started easy.
Installation, activation and later updates follow a clear path, so that the download becomes a reliable ewws deployment.