1. Open the Gaiyo app and scroll towards "Public transport tickets". Tap "Tickets" next to a U-OV transport location or subway station.
2. Tap "edit" to change various details like the name on the ticket or if you want to buy a 1 hour or day ticket. Scroll down to read more information about the specific ticket you are about to purchase.
3. When you've made sure all details are entered correctly, tap "OK" at the bottom of the screen.
4. Tap "Confirm selection" at the bottom of the screen to proceed to checkout.
Alternatively you can navigate to the "Public transport tickets" Map, tap on a U-OV stop and proceed with the steps above.