Use Stolanic as an app

There is nothing to download from an app store. The portal installs straight from your browser, gets its own icon on your home screen and opens full screen. You sign in with the same email and password.

iPhone or iPad

Open orders.stolanic.com in Safari.
Tap the Share button, the square with an arrow pointing up. On newer iPhones it sits inside the ⋯ menu.
Tap Add to Home Screen, then Add.

Android

Open orders.stolanic.com in Chrome.
Tap the menu, the three dots in the top right corner.
Tap Install app, or Add to home screen.

Computer

Open orders.stolanic.com in Chrome or Edge.
Click the install icon at the right end of the address bar, or open the browser menu and choose Install.

Updates arrive on their own. There is never a new version to download.