Development of blockchain based mobile food delivery application

In this study, it is aimed to develop a mobile food ordering application that offers a blockchain-based Ethereum cryptocurrency payment option. For this purpose, the mobile application that was designed using Android Studio development environment and Kotlin programming language has been connected with Metamask which is a cryptocurrency wallet software. By this means, any user who wishes to place an order using the mobile application will be able to access the cryptocurrency account on the Ethereum blockchain and pay the total amount of the products in his basket with cryptocurrency. All transactions made with this decentralized and transparent payment method are crypto-secured and stored on the Ethereum blockchain and are immutable. Based on these results, the option of paying with cryptocurrency, a feature that is not yet available in mobile applications used in our country, could be offered to end users as a new feature. Due to the fact that blockchain technology is a relatively new field, academic and scientific sources on the subject are limited. There are not sufficient sources for software developers who aim to work in this field in order to obtain experience. Additionally, since projects involving concepts such as blockchain and cryptocurrency are usually carried out on the web, they have a lower potential to become widespread and attract the end user compared to mobile applications. Thus, considering the number of projects in which concepts such as blockchain and cryptocurrency are used with mobile applications are too few, it is advised to increase their numbers through support. Due to the insufficiency of human resources, it has been concluded that blockchain technology should be studied not only in finance but in every field possible. Keywords: Blockchain, Ethereum, Metamask, Mobile Application, Kotlin