If you are looking for the best Grubhub clone app, I suggest you look for the following criteria to choose your app development team. These criteria will not change irrespective of the scale of your app.

Pocket-friendly solution:
Discuss your business requirements and goals with your app development team to get an estimation. Keep track of your budget as you will need a significant portion of it for marketing and other purposes.

Native app development:
Native apps are the ones that are compatible with both Android and iOS platforms and can help to cover a significant number of customers in a short period of time.

Server installation:
Since your app will deal with databases, user accounts, transactions, and other cloud-related elements, it is crucial to have a remote server.

Licensed source code:
You should go through the licensing process in the region you have planned to launch your business. Ensure that your Grubhub clone app development team provides a licensed source code on delivery.

White label apps:
Getting a white label app is an added advantage for your business as you can seamlessly rebrand your app with your brand elements and colors.

Launching your app:
A professional Grubhub like app development team will launch your app on every central platform. They will provide the credentials on delivery along with the source code.