This app will work for B2B online grocery ordering ,  Below are the common features along with this B2B android app features.

Features

1. Easy registration
The registration process has to be simple and user-friendly. The registration through social media login is popular nowadays. This feature can be added to the registration process. Other options are through email id and mobile number. When logged in through the social media, the options to share any offers makes it a good advertising for the grocery delivery app.
2. Product listing
Yes, this is the basic of every grocery app development. But proper care is to be taken to segregate the grocery items into products and sub-products so that it is a seamless shopping experience for the users. All the products should have a rich description so that customers get valuable information from it.
3. Quick shopping list
After searching, if the customer doesn’t want to buy the item and save it for later purchase, then a quick list in the grocery mobile app development process will help them in this regard. Here, the customer can save the items for future reference. This feature can include many options like a favorite list, scanned barcode list, reminder list and so on.
4. Search
This core feature has to be powerful, yet simple. It has to offer convenience to the user to search items from the app. The grocery app development has to add filters of varied kinds that will make it easy for operation so that the user reaches their preferred item search faster in the list.
5. Push notifications
Any customer has to be given constant updates about new offers or new products. Push notifications serve this purpose. The grocery mobile app development has to introduce this feature so that the clients remain faithful to their grocery app.
6. Recommended products
You might have seen this feature on many of the shopping sites. Here, based on the previous search preferences of the user, the recommended product list is displayed at the bottom. When your grocery app development includes this feature, it will keep the users engaged as they get precisely what they require as per their interests.
7. Good images
For an authentic shopping experience, the customers have to be shown images of real products. This increases the visual appeal and makes them feel that they are viewing the product in real. This also makes them shift easier from physical to digital shopping.
8. Order Time:  - Whenever user of this app will order the products then he/she can enter his/her demanded quantity . 

Once order place then user can enter one more entry that he/she will come from own vehicle or needed vehicle from admin .

Once order done then delivery may be partially , like if admin don't have sufficient stock , then admin can deliver available quantity then remaining quantity can deliver after some time,