Choose a day and time
Open Settings → Weekly reminder in Lister. Select a weekday and time, then confirm the new schedule.
A useful time is shortly before your usual shopping trip, when you are at home and can check the fridge and cupboards.
Use the reminder
The notification prompts you to check what you have and update your lists. Add what is missing and coordinate the shopping with your household where needed.
Change it or turn it off
In the same settings screen, choose a new time or turn the reminder off. The next scheduled reminder is shown there.
If notifications do not appear, check that Android allows Lister to send them. Your device’s power-saving settings can affect when notifications arrive.