See here: Updating your app & data
Summary of time it takes for changes to be seen in production (ie. in the live app):
- Changes within app: seconds
- Manual changes to data in sheet: up to 3 minutes
- Automatic changes to data (some formulas in Google Sheets, 3rd party integrations):
- Free apps: not until manual update
- Pro apps: periodically in the background
- Layout: up to 10 minutes (often quicker)
- Published Google Sheets charts: up to 1h
- App icon & splash screen: reinstall needed