Istanbul is a wonderful city. However, it is crowded and the traffic is heavy. So, if you wanna take care of some shopping but its rush hour, or you are just feeling lazy, hungry and want to order in, these apps are for you. 
Ordering food Application
There is no door dash or Uber eats in Turkey. Instead, they have Yemeksepeti. After signing up in Yemeksepeti you can see the list of restaurants around you and order with ease.
Supermarket application
Getir is an easy way to get what you need for your pantry. No hassle, nothing. Their deliveries are on time and neat. However, i'd rather buy my fruits and veggies in person.
Ordering water Application
If you spend some time in Turkey, you realize that most of the households don't use the tap water for drinking. This is despite the fact that Istanbul water is safe to drink!!! BiSU is the application for you. When you first order water in Istanbul, you'll be charged for the container as well as the water. but for the refills, you just hand in the previous empty container and get a new one.
Ordering clothes application
Trendyol has, well, everything! they started with clothes only, but now they sell everything from socks to sex toys. The good thing is that you can return the products you buy if you don't like them or if there is a problem.
Taxi application
There is Uber in Istanbul, but you'll see their services are limited and they don't have as many drivers as Bitaksi. Bitaksi is even integrated into google maps so you can get a taxi from there.
Market application
Job listings, houses to buy and rent, and well, everything else can be found on Sahibinden. If you don't like that one, you can also try Emlakjet or Letgo.
Ordering food Application
There is no door dash or Uber eats in Turkey. Instead, they have Yemeksepeti. After signing up in Yemeksepeti you can see the list of restaurants around you and order with ease.
Supermarket application
Getir is an easy way to get what you need for your pantry. No hassle, nothing. Their deliveries are on time and neat. However, i'd rather buy my fruits and veggies in person.
Ordering water Application
If you spend some time in Turkey, you realize that most of the households don't use the tap water for drinking. This is despite the fact that Istanbul water is safe to drink!!! BiSU is the application for you. When you first order water in Istanbul, you'll be charged for the container as well as the water. but for the refills, you just hand in the previous empty container and get a new one.
Ordering clothes application
Trendyol has, well, everything! they started with clothes only, but now they sell everything from socks to sex toys. The good thing is that you can return the products you buy if you don't like them or if there is a problem.
Taxi application
There is Uber in Istanbul, but you'll see their services are limited and they don't have as many drivers as Bitaksi. Bitaksi is even integrated into google maps so you can get a taxi from there.
Market application
Job listings, houses to buy and rent, and well, everything else can be found on Sahibinden. If you don't like that one, you can also try Emlakjet or Letgo.