The Yandex web browser for iOS is extremely fast - compared to Safari and Chrome - on my iPhone 6+ and has many nice features that work as advertised in the App Store. My only criticism as of April 2016 is that the browser often crashes for no apparent reason (eg while reading a news article). When it does crash you can restart it and go directly back to the page you were viewing. When that bug is fixed I will rate the Yandex browser with five stars. Other possible improvements would be the ability to make it the default browser and the ability to select DuckDuckGo as the preferred search engine. Yandex search is good, but in this browser it assumes your native language is Russian, Ukrainian, or Turkish. If that is not the case, you can simply save a bookmark to your preferred search engine in the Tableau.
The genuine JJD about Yandex Browser, v16.2.0.696