Klappið is an official app developed by Strætó Iceland, the administrative body for public transportation in Reykjavík. The app aims to offer convenient payment options for various types of public transportation services. Users can purchase single tickets or period passes, such as monthly or yearly passes, through the app. The app allows users to sign up, register their preferred payment method, buy a travel media, and validate their purchase on Strætó buses. The Klappið app provides a seamless experience for both residents and visitors of Reykjavík. By offering a range of payment options, it ensures that users can easily access and pay for public transportation services. Whether someone needs a one-time ticket or a long-term pass, the app allows them to make their purchase and validate it directly on the Strætó buses. This eliminates the need for physical tickets or separate payment methods, making the process more efficient and user-friendly. With Klappið, users can manage their public transportation needs in one place. The app's registration process allows users to set up their preferred payment method, ensuring a smooth and secure transaction process. By offering a variety of travel media options, such as single tickets and period passes, the app caters to the diverse needs of its users. Whether someone is a regular commuter or a tourist exploring the city, Klappið provides a convenient and accessible solution for public transportation payment in Reykjavík.