Local data on your device (analysis history, saved conversations) is cleared when you delete your account from within the app. If you uninstall the app, local data is also removed.
Open SigApp → Settings → Account → Delete Account
This deletes both your server data and local data immediately.
If you can no longer access the app, send an email to:
Include the email address associated with your Google Sign-In. We will process your request within 7 business days.