Many supermarkets in New Zealand offer a "Click & Collect" service, which you can use to order your groceries online and then pick them up at the store, already bagged.
During the COVID-19 pandemic, there has been a large increase in the number of online orders, and supermarkets are often booked out of available timeslots. However, at certain points throughout the day (particularly around midnight), supermarkets will release new slots.
This website tracks and displays the available timeslots across hundreds of supermarkets, helping you to find which supermarkets have the most availability and to find the best time to order your groceries.
If you are interested in how I built this, I wrote a short article about it on my blog.
The website currently tracks four chains of supermarkets:
Only stores that support Click & Collect are tracked.
Delivery timeslots are not supported by this website.
The availability data is refreshed every 5 minutes. The time the data was last collected for a particular supermarket is displayed in the upper-right corner of the site.
This source code of this website is available under the MIT license.
The code for the scraping mechanism has not been published. If you are interested in the data, you can find a regularly updated snapshot at the clickandcollect.nz.api repository.