To run Loyalzoo on an Android tablet or smartphone, first make sure you have the Chrome browser installed (instructions may work on other browsers too).
Then follow these instructions:
Open the Chrome browser, and go to store.loyalzoo.com, then tap the menu button and choose "Add to Home Screen"
Type your business name, or leave it as "Loyalzoo Store"
Click Add. You will then find the app on the tablet home screen.
Then login and you're set up is complete. The app will not log out, and you will not need your login details to launch it in future.
Just repeat the above process for any additional account :-)