The global mobile OS market share is mainly dominated by two operative systems. One of them is Android, and the other one called iOS. These two together had more than 99% of the market share in 2018, and it does not look like this trend is going to change anytime soon. Because of these two completely different platforms, there are many frameworks that provide solutions for developing applications that are platform independent. This study contains performance comparison between two of the more popular frameworks called Fluer and React Native. The performance is measured in terms of the number of dropped frames under a certain time for two different applications. The results that were acquired during tests reveal that React Native dropped less frames in total, although the difference was not significant.