This paper aims to examine what the differences is between the three application types, native, hybrid and web. The main focus will be placed on the web app and investigate whether it could be an alternative to native and hybrid app. To explain what a web app has the capacity to do, a web app is created in wordpress. Web development is moving forward, which is obviously positive. The problem may be, however, for companies that come from a completely different industry and who wish to develop a new web solution for their company. A native app can be a very expensive investment and it is far from all companies that can pay this. This study wants to find out if a web app, could be an alternative to the native app. Furthermore, the report will examine what the possibilities are for a web app and what existing web apps there is today. Furthermore, a simple price comparison between the different app types to be made. / Den här rapporten syftar till att undersöka vad skillnaden är mellan de tre applikationstyperna, native, hybrid och webb. Störst fokus kommer att placeras på webb appen och undersöka om denna skulle kunna vara ett alternativ till native och hybrid appen. För att redogöra vad en webb app har kapacitet att göra kommer en webb app att skapas i wordpress. Webbutvecklingen går framåt vilket självklart är positivt. Problemet som kan bli är dock för företag som kommer från en helt annan bransch och som önskar ta fram en ny webb-lösning för sitt företag. En native app kan vara en väldigt dyr investering och det är långt ifrån alla företag som kan betala detta. Denna undersökning vill reda ut om en webb app kan var ett alternativ till native appen. Vidare kommer rapporten undersöka vad det finns för möjligheter för en webb app och vad det finns för webb appar idag. Dessutom kommer en enklare prisjämförelse mellan de olika apptyperna att göras.

Contemporary approaches to cross-platform mobile application development, such as hybrid apps from PhoneGap and generated native apps from Xamarin, show promise in reducing development time towards Android, iOS and other platforms. At the same time, studies show that there are various problems associated with these approaches, including suffering user experiences and codebases that are difficult to maintain and test properly. In this thesis, a novel prototype framework called Building Blocks was developed with the purpose of investigating the feasibility of utilizing component-based software engineering in solving this problem. The prototype was developed towards Android along with a web interface that allowed users to assemble an Android app using software components. The report concludes that component-based software engineering can be – and already is – utilized successfully to improve cross-platform mobile app development with special regards to user experience. Qualitative data indicate that Building Blocks as a concept is flexible and shows promise for mobile app development in which functionality is often reused, such as enterprise apps. Rapid prototyping using the web-based visual editing tool was another promising area. However, future use of Building Blocks would require further work on the prototype to improve its ease of use.

In the past few years, technology has been changing by leaps and bounds, within which a new topic has emerged as Internet of Things. These things serve as sensors/actuators, connected to the Internet and enabled to communicate with each other simultaneously in a P2P distributed manner. The sensors/actuators sense and generate contextual data in their surroundings in order to enable real-time context-aware behavior that make them more personalized and intelligent. This contextual information may be useful for human purposes like environment monitoring, home surveillance, elderly care, safety, security surveillance, etc. Moreover, smart mobile devices with incredible features have become hugely popular, the use of the Internet of Things would be much handier using smartphones to interact with sensors and also to generate information with its decorated sensors. The main aim of this thesis work is to create an extension for an add-in layer of the Internet of Things (SensibleThings Platform) architecture that adds functionalities like querying UCI value within the platform, connecting different mobile devices regardless of programming language, which has been done using the REST protocol. Furthermore, the intention is to build a P2P connection between the Java coded SensibleThings platform to a non-Java platform, i.e. iOS, by creating an Objective-C library to support dissemination of contextual information between the discrete platform in a distributed manner using JSON. Two servers have been created using Apache web server and sockets to connect with the Objective-C library to compare the performance of extension and library. The thesis work also presents the implementation of the extension and an Objective-C library, integrated to create proof-of-concept applications by developing an iOS application and Mac OS desktop application that can easily interact with the SensibleThings platform by requests through the REST protocol and getting the UCI value in JSON message format. Moreover, to know the best possible solution for the SensibleThings platform, a hybrid application has also been developed by using PhoneGap and JQueryMobile within XCode, which is compared with the iOS web app, and an evaluation of mobile applications using extension and library with two servers has also been performed. According to the results between the web server and sockets, the sockets act scalable and more stable than the web server when interacting with the SensibleThings platform; when comparing between the iOS and Mac app for performance, there is not much difference. The results also suggest that a hybrid app would be a better solution for the SensibleThings platform; it could be developed with less effort and be useful for a variety of mobile devices, which might be the best solution for the IoT in the future. Lastly, the conclusions includes possible future work to be supplemented, to make the IoT better in future.

Att göra webbsidor tillgängliga för olika sorters enheter är ett område som har uppstått i och med smartphonens utveckling. Mängden enheter har under de senaste åren ökat stort och det är inte längre endast laptops och datorer som används. Då enheternas skärmupplösning skiljer sig krävs en anpassning beroende på enhet för att ge en bra användarupplevelse. För att identifiera tillgängliga tekniker har en kvalitativ undersökning genomförts. Undersökningen består av en genomgång av utvald litteratur samt intervjuer med utvecklare på företagen Nethouse och Laget.se utförts. Detta för att inhämta information om användandet av tekniker, undersöka om det finns något framträdande tankesätt samt undersöka för- och nackdelar med teknikerna. Slutsatsen är att alla tekniker har sina användningsområden eftersom de har olika styrkor och svagheter. Resultatet från denna studie presenteras som en genomgång av de befintliga teknikerna och deras potentiella användningsområden för att vägleda valet av teknik. / Making web pages available for different types of devices is an area that has arisen with the development of smartphones. In recent years it has become a major increase in units and there are no longer only laptops and computers that are being used. Since there is a size difference between the different devices there is need for adjustment depending on the device to provide a good user experience. The study was carried out as a qualitative study to identify available technologies. A review of available literature and interviews with developers at the companies Nethouse and Laget.se was conducted to obtain information on the performance of the techniques, if there is any way of thinking and if there is advantages and disadvantages of the techniques. The conclusion is that all technologies have their uses as they have different strengths and weaknesses. The results from this study are presented as a review of the existing technologies and their potential uses to guide the choice of technology.