Privacy Policy
Toasterz values your personal information and complies with relevant laws, including the Personal Information Protection Act.
1. Service Overview
Service Name: SourFriend
Company: Toasterz Inc.
Service Description: Mobile app and web service integrated with smart fermentation IoT devices
2. Personal Information We Collect
Required Information
- Email address
- Device information (model name, OS version, device identifier)
Optional Information
- Device token for push notifications
- Content and records generated during service use (starter management information, fermentation environment data, uploaded images, etc.)
Automatically Collected Information
- Device information (model name, OS version)
- App version information
- Service usage records
3. Purpose of Collection and Use
- User registration and management
- Service provision and improvement
- User content storage and management
- Sending notifications (when opted in)
- Customer support
- Bluetooth Low Energy (BLE) connection to smart fermenters and reception of status data
4. Retention and Use Period
Retained until account withdrawal and deleted immediately upon withdrawal.
5. Disclosure to Third Parties
In principle, we do not provide personal information to third parties.
However, we may provide minimal information in the following cases for service provision:
- Google Firebase: Push notification delivery
- Amazon Web Services: Service operation and data storage
6. Outsourcing of Personal Information Processing
We outsource personal information processing as follows for service provision:
Service Provider: Amazon Web Services (AWS)
Outsourced Tasks: Server hosting and data storage
7. User Rights
Users may exercise the following rights at any time:
- Request access, modification, and deletion of personal information
- Account withdrawal (via in-app 'Delete Account' feature)
- Opt out of notifications (device settings)
8. Personal Information Protection Measures
- Encrypted communication (HTTPS/SSL)
- Access control and management
- Security program installation and periodic inspections
9. App Permission Notice
We may request the following device permissions to provide our services. You may deny these permissions; however, related features may be limited if you do so.
Bluetooth (BLE) [Required]
Purpose: To discover, connect to, and receive status data (e.g., temperature and humidity) from SourFriend smart fermenters
Information used: Nearby BLE device identifiers (device name, signal strength, etc.) and fermentation environment data received after connection
If denied: You cannot connect devices or use remote monitoring features.
Location (Nearby devices) [Android]
Purpose: Required by the Android operating system to perform BLE scanning (not for GPS tracking or storage)
Information used: We do not collect, store, or share your GPS location through this permission.
If denied: BLE device discovery and connection may not work on Android devices.
Bluetooth [iOS]
Purpose: To discover and connect to smart fermenters
Information used: Nearby BLE device identifiers
If denied: You cannot use device connection features.
Notifications [Optional]
Purpose: Service alerts such as fermentation completion and feeding reminders
Information used: Device token for push notifications
If denied: You will not receive push notifications.
These permissions are used only to provide the service. We do not use information obtained through permissions for purposes other than those stated in this policy, nor do we provide it to third parties. You may change permission settings in your device settings.
10. Privacy Officer and Contact Information
Company Name: Toasterz Inc.
Address: Room 124, 2, Toegye-ro 36-gil, Jung-gu, Seoul, Republic of Korea
Email: contact@toasterz.team
Website: https://www.toasterz.team
This Privacy Policy is effective as of January 15, 2025, and was updated on June 5, 2026 to add Bluetooth (BLE) and location permission notices.