A 2017 report revealed that IOS and Android combined hold 96% of the global App market, while the remaining include the other not so popular platforms. So, from the above figure, it is straightforward to deduce that the mentioned platforms dominate the App industry worldwide.
iOS vs. Android is a long-going battle, and it is expected that this would never end. This is why businesses are still perplexed, which platform is best-suited for their upcoming venture.
Neither of the platforms is better than the other one. Both iOS and Android mobile operating systems have their own set of pros & shortcomings, and those need to be weighed to make the best decision.