'EasyQuit' (hereinafter "the App") values the privacy of its users and collects, uses, stores, and shares personal information as described below. This policy applies to all features provided by the App.

1. Personal Information Collected

• Required information: None
• Optional information: None
• Automatically collected information: Device information, advertising identifiers (IDFA/GAID), usage logs, service usage records (including ad impressions and click data), Firebase Instance ID, A/B test experiment group assignment data, and app event and performance logs

2. Purpose of Collection and Use

• Storing and managing smoking cessation progress (quit date, money saved, etc.)
• Cross-device data synchronization and backup via iCloud
• Serving ads and measuring ad performance through Google AdMob
• Analyzing service usage through Firebase Analytics
• Improving the service and optimizing user experience through Firebase A/B Testing and Remote Config
• General usage analysis for service quality improvement

3. Retention and Use Period

• Smoking cessation data within the App (quit date, smoking amount, etc.) is stored on the device and iCloud until the user manually deletes it or uninstalls the App.
• Information collected for advertising and statistical purposes is managed according to the partner's (Google) policies.
• Analytics data collected through Firebase is managed according to Google's data retention policies.
• When the user uninstalls the App, data stored on the device is immediately deleted. iCloud data is managed according to Apple's policies.

4. Third-Party Provision and Outsourcing

• Google AdMob: Ad serving and performance measurement
• Google Firebase (Analytics, Remote Config, A/B Testing): Service usage analysis, service improvement and user experience optimization through A/B testing