Beware of the Ubersear.ch Fake Search Engine
Ubersear dot ch is a fake search engine that is linked to and promoted by the rogue browser extension called "Ads Blocker".
Fake search engines of this kind are commonly linked to browser hijackers or rogue browser extensions that act like browser hijackers. Ubersear dot ch is no exception.
You should generally keep away from using fake search engines of this kind because they would often collect your browsing queries to re-sell them to marketers. Additionally, the results generated by such fake search engines are highly unreliable and are heavily laced with sponsored results and rogue links and redirects that might land you on questionable pages.
The Ads Blocker rogue extension linked to Ubersear dot ch can also modify your Android device calendar and fill it with many deceptive events that can trigger pop-ups and notifications and display rogue ads.
Make sure your browser and Android device are clear of similar undesirable elements and run a mobile antivirus application if you suspect you may have a similar rogue extension or browser hijacker installed on your device.