Do you know of some taxi app in Istanbul/Turkey to avoid bargaining and fake taxis ?
There is BiTaksi and Uber. Both reliable with BiTaksi probably having more/faster access to cars.
The yellow cabs in Istanbulusually rip you off a lot. There are bunch of apps, but the most commonly used it Uber.
You can also look into BiTaksi, however, my experience with Uber has been nothing short of SUPERB. Furthermore, the latter is in Turkish, as far as I know, and, usually not too foreigner friendly. As far as my experience goes, Uber drivers are super friendly, and know English, or, partial English, at least!
Istanbul is one of my favorite cities and I really hope you enjoy your stay there! =D
it is called BiTaksi. You can turn on location, choose the payment type and call the taxi. you can also choose english as apps language