You have several options to order food (meals) online if you are located in Las Palmas or other bigger cities. These are the most popular ones:

Glovo
Glovo can deliver to you from restaurants, the pharmacy and even supermarkets and custom requests. They sometimes have discounts. The delivery fee is in most cases €1,99 per order and there’s no service fee. For €7,99 you can subscribe to GlovoPRIME, meaning free delivery for restaurant orders over €10 on selected restaurants. Receive €3 discount on four orders worth more than €10,-. Use this code D1L45V4.

UberEats
UberEats probably has the most discounts active. You can only order from restaurants, but they have a wide selection. Same like Glovo, they have a subscription for unlimited deliveries for a fixed fee. The UberEats-Pass is only €4,99 a month. The delivery fee depends on your location, so it’s up to you to decide if the UberEats-Pass is worth its money. You’ll still have to pay the 10% service fee. Get €10 discount on your first order (€20 or more) using this code: eats-gqksyl

JustEat
The third option is JustEat, but I don’t have any personal experience with their app.