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Idag finns det många olika metoder för att bygga appar. Det är möjligt att utveckla separata appar för samtliga plattformar eller att använda något av Cross Platform-ramverken. Då de olika metoderna har både för- och nackdelar är det av vikt att välja den bästa metoden för just sin app. Under detta arbete kommer en app att skapas med två olika metoder. En med Cross Platform-ramverket React Native samt en motsvarande webbaserad app, närmare bestämt en Progressiv Webb App (PWA) skriven i React. Därefter kommer en jämförelse av tre funktionaliteter (kamera, bluetooth-skanning och NFC-skanning) att utföras för att besluta vilken av dessa appar som gav det bästa resultatet samt arbetsbördan ur ett utvecklarperspektiv. De främsta problemen som uppstod var stylingproblem, kamerafunktionalitet samt att vissa webbmotorer inte tillåter bluetooth- och NFC-skanning. Detta innebar att dessa funktionaliteter inte fungerar på alla webbläsare. Resultatet indikerar att PWA har sina begränsningar när det kommer till hårdvarunära funktionalitet, men är i övrigt ett mycket bra sätt att bygga en app på. React Native är bättre när det kommer till hårdvarunära funktioner men kan leda till fler stylingproblem. / There are many different ways to create apps these days, one can choose to create separate apps for each platform or use a Cross Platform framework. Because different methods have different benefits and drawbacks, it is critical to find the best method for your specific app. This project will result in the development of two apps: a Cross Platform React Native app and a web-based app, dubbed a Progressive Web App (PWA) written in React. Following that, a comparison of three functions (camera, bluetooth scanning, and NFC scanning) will be carried out in order to determine which of these frameworks provided the best results and workload from an engineering perspective. The most serious issues that arose were styling issues, camera functionality, and the fact that some web browser engines do not support Bluetooth or NFC scanning, implying that these features do not work on all browsers. PWA has its limitations when it comes to native features, but it is still a very good way of building an app. When it comes to native features, React Native is better, but it can lead to more stylistic issues.

I denna studie kommer vi att undersöka det populära ramverket Xamarin. Xamarin är ett cross-platform ramverk som använder programmeringsspråket C# för att utveckla samma applikation för iOS, Android och Windows Phone. Studiens huvudsyfte är att genomföra en inledande explorativ studie där vi försöker att identifiera ett antal särskiljande aspekter mellan native- och Xamarin utveckling och dess slutprodukter.För att göra denna jämförelse har vi utvecklat tre applikationer: en native android applikation, en Windows Phone applikation i Xamarin, och en Android app-likation i Xamarin. Med hjälp av en litteraturstudie och utvecklingen av de ovan-nämnda applikationerna har de särskiljande aspekter observerats och identifieras.Resultatet av vår studie visar att native Android applikationen tar upp mindre plats i telefonen jämfört med Xamarin Android applikationen, medan Xamarin Win-dows Phone applikationen tar 1/6 mindre utrymme i telefonen jämfört med Xamarin Android applikationen. Ytterligare tester visar också att Xamarin Android appli-kationen tar längre tid att starta jämfört med native Android och Xamarin Winows Phone applikationen. / In this study, we will examine the popular framework Xamarin. Xamarin is a cross-platform framework that uses the C# programming language to develop the same application for iOS, Android and Windows Phone. The study's main purpose is to conduct an initial exploratory study in which we try to identify a number of distin-guishing aspects between native- and Xamarin development and its products. In order to make this comparison we developed three applications: one native android application, one Windows Phone application in Xamarin, and one Android application in Xamarin. With the help of a literature study and the development of the aforementioned applications, the distinctive aspects have been observed and identified.The result of our study shows that the native android application takes up less space in the phone compared to the Xamarin android application, whereas the Xamarin Windows Phone app takes 1/6 less space in the phone compared to the Xamarin android application. Further tests also show that the Xamarin android ap¬p-lication takes longer time to start-up than with the native Android and Xamarin Winows Phone applications.

Product platforms holds great potential for cost effectiveness since several components are reused in different product variations. This bachelor thesis evaluates the implementation of a product platform of simple geometric products by applying the two different product development theories Design Thinking and Product Platform Concept Exploration Method(PPCEM). Design Thinking is a well-used theory which is mainly applied for development ofindividual products with the user in focus, while PPCEM is used for building large-scale and complex product platforms. In collaboration with Seldén Mast AB the possibility of creating a product platform for their product was investigated. It was accomplished by first developing the platform through Design Thinking and then theoretically recreating it through PPCEM. The difference in performance between the two theories was then analyzed. The results showed that none of the methods are individually adapted for the development of modularity for smaller products and volumes. Great importance was attached to being able to identify and define the essential correlations between the reusable components that constitute the modularity, which was most effectively achieved by combining the two theories. The study is structured by a thoroughgoing implementation of Design Thinking where several methods and models are used to support the structure of the concept for the platform. The re-creation is then based on PPCEM, where the theories methods are used as a basis for defining the conditions and foundation of the product platform. The purpose of this report is to compare the implementation of the various theories and analyze its suitability for designing a product platform for simple geometric articles.