App & devices: LEONIS in the browser and as a web app

Play in the browser

Open leonis-app.com, create an account or log in. That is all you need. Updates arrive automatically: when there is a new version, “New version available” appears at the top, and your progress stays unchanged.

Browser or web app

Content, account and progress are the same either way. The installed web app is a shortcut with its own window:

starts from its own icon, without an address bar or tabs,
is required for notifications on iPhone and iPad,
can open the last loaded state without a connection (see below).

Everything else works the same in the browser, including notifications on Android and computers.

Install the web app

Choose your device below. Installing is optional and can be undone any time like with other apps.

The button only appears if your browser offers installation itself. Otherwise the guide helps.

iPhone and iPad

Open leonis-app.com in Safari. From iOS and iPadOS 16.4 other browsers that offer the share menu work too.
Tap “Share” (the square with an arrow pointing up).
Choose “Add to Home Screen”. If it is not in the list, scroll down or open “Edit Actions”.
Confirm with “Add”. LEONIS now sits as an icon on your home screen.

On iPhone and iPad, notifications only work in the app opened from the home screen (iOS 16.4 or later).

Android

Open leonis-app.com in Chrome.
Open the menu with the three dots at the top right.
Choose “Install app” or “Add to Home screen” and confirm.

Other browsers such as Samsung Internet offer similar menu items. LEONIS is tested with Chromium.

Windows

Open leonis-app.com in Microsoft Edge or Google Chrome.
Click the install icon on the right of the address bar. Alternatively use the menu: “Apps” › “Install this site as an app” (Edge) or “Cast, save and share” › “Install page as app” (Chrome).
Confirm with “Install”. LEONIS opens in its own window and can be pinned to the taskbar.

Firefox cannot install web apps on Windows the way Edge or Chrome do. LEONIS still runs in the browser there.

Mac

Safari (macOS Sonoma or later): open leonis-app.com, then choose “File” › “Add to Dock”.
Chrome or Edge: click the install icon on the right of the address bar and confirm.

Afterwards LEONIS starts from the Dock or the Applications folder in its own window.

Devices and browsers

LEONIS is built for current browsers: Chrome, Edge, Safari and Firefox, each in a current version. Automated tests run on Chromium (the basis of Chrome and Edge). Safari and Firefox are supported but not tested automatically. On large screens the app switches to a layout with a sidebar.

Known limit: there is no iPhone widget, because web apps cannot create widgets on the iPhone. The quick view in the app is the alternative.
Older browsers or JavaScript turned off: the information pages remain readable, the game itself needs JavaScript.

Progress on several devices

Your progress lives in your account on the server, not on the device. Log in on a new device with your email and password and carry on there. You set up notifications and price alerts again on each device. One device can hold at most two accounts. In settings under Account you can log out on all devices.

Without internet

You need an internet connection to play. Without one, the app can start and show the last loaded state, but it accepts no bookings and shows no current prices. A notice appears at the top. What carries on while you are away, such as wages and deductions, is explained on When you are away.

Notifications

Notifications are optional. LEONIS does not ask for them when the page opens. You turn them on in the app under Settings › Notifications, where you also choose types and quiet hours. The browser then asks once for permission.

Android: in Chrome or as an installed app.
iPhone and iPad: iOS 16.4 or later, only in the app from the home screen.
Computers: in Chrome, Edge, Firefox and Safari, as long as the browser allows notifications.
Everything LEONIS sends also appears in the notification centre (bell at the top), even when push is off.

Common installation problems

No install icon: Not every browser offers it, Firefox for example does not. Use Chrome or Edge, or the share menu on iPhone and iPad. Private windows often lack the option.
“Add to Home Screen” is missing: Scroll down in the share menu or open “Edit Actions”. On older iOS versions it only works in Safari.
No notifications: In the app check under Settings › Notifications whether push is active on this device. If you declined permission, allow it again in the browser or system settings. During quiet hours LEONIS holds notifications back.
Old version: Tap “New version available” or fully close the installed app and open it again.
Duplicate app or removing it: Remove the web app like any other app. Your progress stays in your account.

More solutions are in the help centre. If none of this helps: Support and contact.