Software technologies for sports application development for wearable computing devices

Diplomski rad opisuje rezultate detaljnog istraživanja četiri popularna operacijska sustava koji omogućuju razvoj aplikacija namijenjenih pametnim satovima. Istraženi su WatchOS, Wear OS, HarmonyOS i Garmin OS. Operacijski sustav Wear OS se pokazao kao najbolji odabir kroz svoje prednosti poput široke dostupnosti uređaja, opsežne dokumentacije te integriranosti platforme Google Fit. Iz tog razloga, razvijen je i opisan prototip programskog rješenja CaloBalance za operacijski sustav Wear OS koje korisnicima pomaže u praćenju kalorija. U realizaciji programskog rješenja korištene tehnologije su: Android Studio, Java, Android SDK, Wear OS, Figma i SQLite. Glavna svrha aplikacije CaloBalance je prikaz kalorijskog stanja koje se računa na temelju unosa namjernica te potrošnje kalorija kroz aktivnosti i BMR. Kalorijsko stanje korisniku govori koliko je u kalorijskom suficitu, tj. deficitu, a svakog trenutka se ažurira te prikazuje na pametnom satu. Aplikacija korištenjem svih značajki i prednosti Wear OS-a korisnicima pruža pouzdano i učinkovito rješenje za praćenje unosa kalorija i postizanje zacrtanih ciljeva.The thesis describes the results of a detailed study of four popular operating systems that enable the development of applications for smartwatches. WatchOS, Wear OS, HarmonyOS, and Garmin OS were examined. The Wear OS operating system proved to be the best choice due to its advantages such as wide device availability, extensive documentation, and integration with the Google Fit platform. For this reason, a prototype software solution CaloBalance for the Wear OS operating system was developed and described. The technologies used in implementation of the software solution include Android Studio, Java, Android SDK, Wear OS, Figma, and SQLite. The main purpose of the CaloBalance application is to display the user's calorie balance, which is calculated based on calorie intake and calorie expenditure through activities, and BMR (Basal Metabolic Rate). The calorie balance informs the user about whether they are in a calorie surplus or deficit, and it is updated and displayed on the smartwatch in real time. By utilizing all the features and advantages of Wear OS, the application provides users with a reliable and efficient solution for tracking calorie intake and achieving set goals