There are around 15 billion mobile devices in use as of 2021.[28] Now, the market share of mobile phone operating systems IOS and Android, where the market share of IOS is about 28.29%, the market share of Android is about 78.94% [27]. This also means mobile developers need to learn different programming languages (Java, Kotlin, IOS, Objective-C) for different operating systems. This increases the company’s operational cost significantly. Still, if it is a small company or the company does not have enough budget to hire enough Android Developers and IOS developers. Mobile developers will have to learn how to develop IOS software and Android software simultaneously. This Honours Project used a cross-platform application framework maintained by Facebook(Meta) React Native. Over the last two years, Covid-19: The pandemic that swept the world in the previous two years, complicated what was once a simple matter in past. Suppose a student wanted to find a new apartment two years ago. In that case, they could call the Rental offices and schedule an appointment for a visit. However, he could not do it quickly without safety concerns. Rent Wise is an Android and IOS application that helps students find places to live in a more approachable way. Students can use their email to log in to the app, post reviews of the sites they lived in before and check the rating of the places they will rent in the future.