Is there an Android currency converter app which automatically

Hi,
Is there an Android app which automatically converts currencies from one currency to another base currency (set in the option).
Testing about 25 Android currency converter
Apps, none converts currencies automatically.
For example, if one have currency converter
App installed, and he goes to Amazon, eBay, Alibaba, bangood, AliExpress, etc sites inside browsers or in some special app for this purpose, then the installed currency converter should change money 💰 amount from euro to the base currency set in the options of app e.g Swiss Frank, or converts currencies from Dollar to base currency Saudi ryal when one visits not just Amazon but any of selling and buying site.
Thanks for your time and help.