Satellite images are updated every 3-5 days. However, if a field is covered by clouds, cloud shadows, or snow, the index may be updated less frequently.
Find out how satellite images are turned into NDVI here.
You can also turn on notifications in the OneSoil Scouting mobile app to find out about NDVI updates! In the mobile app, open the 'Profile' tab and select 'Settings'. Activate the notifications by clicking the tumbler in the 'Notifications' section.