DEWBU App Privacy Policy

Last updated: September 8, 2026

1. Overview

At DEWBU, we value your privacy and are committed to protecting your personal information. This Privacy Policy explains how we collect, use, disclose, retain, and protect information when you use the DEWBU mobile application (the “App”), connect a DEWBU device, or use related smart-heating services.

This Privacy Policy applies only to the App and connected DEWBU device services. It does not apply to the DEWBU website or online store, which may be governed by a separate privacy policy.

2. Information We Collect

We collect the following information when you use the App and connected DEWBU device services. Some items are collected only if you use a related feature or choose to provide them, as noted below.

Personal Information

• Account ID, a unique identifier we assign to your account when it is created. This identifier is generated by our system and is not related to any government-issued identification.
• Username
• Email Address
• Third-Party Login Identifier, if you choose to sign in with a third-party service, such as Apple ID or Google ID
• Profile Information You Choose to Disclose, such as Gender, Age Range, and Use Scenario
• Heating Preferences, such as Temperature Unit and Cold Tolerance

Connected Device and Hardware Information

• Product Model
• Serial Number (SN)
• Manufacture Date
• MAC Address
• Hardware Version
• Firmware Version
• Device Pairing Records
• Device Heating and Operating Status Data, such as Battery, Temperature, Heating Zone, Lighting, and Related Device State Information

The temperature sensors in DEWBU devices measure the microclimate inside the garment. They do not measure body temperature, skin temperature, or any other physiological signal. DEWBU devices are not medical devices and are not intended to diagnose, treat, cure, or prevent any disease.

Mobile Device and App Information

• Mobile Device Model
• Mobile Operating System and Version
• App Version
• Network Environment
• Bluetooth Connection Status

Location Information

When you enable the Outside weather feature, the App may obtain your device’s latitude, longitude, and the timestamp of the location reading. Depending on your device settings and the permission granted, the coordinates may reflect approximate or precise location. We use this information only to request current local weather information and do not use this feature for continuous background location tracking.

Location information is held temporarily in App memory and is not stored by the App in a local database or file. If a new location cannot be obtained, the App may use a last-known location maintained by your mobile operating system.

Weather Information

The App may process current weather data, including temperature, feels-like temperature, humidity, pressure, visibility, weather conditions, wind, precipitation, cloud cover, sunrise and sunset times, and general location information.

The current App interface displays the outside temperature. Other weather fields may be processed temporarily as part of the weather response but are not currently displayed or used for analytics. The App currently refreshes location and weather approximately every 10 minutes. If a request fails, the App may display the last successful weather result for up to 10 minutes.

Motion or Activity Information

When AI temperature control is enabled, the App may collect and process your movement status to adjust the AI temperature-control strategy. This information is used only to provide the AI temperature-control feature.

Diagnostic and Operation Logs

• Registration and Login Logs
• Hardware Error Logs
• App Error and Malfunction Logs
• Firmware Update Status and Firmware Update Success, Failure, or Interruption Logs
• Physical Button Event Logs, such as Heating, Zone, Level, Lighting, and Power Actions
• App Heating Control Logs
• AI Heating Control Logs
• Notification Delivery and Delivery-Status Logs
• Account Deletion, Recovery, and Completion Records
• Other Logs Needed for Device Safety, Connectivity, Firmware Updates, Troubleshooting, and Service Reliability

Information We Do Not Collect

We do not collect government-issued identification numbers, such as passport numbers, driver's license numbers, or national identification numbers.

3. How We Use Your Information

We may use information collected through the App to:

• Create, authenticate, secure, and maintain your App account;
• Process account deletion and recovery during the seven-day recovery period, and maintain account-deletion audit records;
• Connect, pair, identify, and manage DEWBU devices;
• Display device status, battery level, temperature, firmware information, and connection status;
• Provide heating control, zone control, lighting control, pause and resume functions, and other connected-device features;
• Maintain operation history and generate available device-use reports;
• Check for firmware versions, deliver firmware updates, and troubleshoot update issues;
• Detect, diagnose, and respond to device errors, overheating protection, connection failures, App errors, and other safety or reliability issues;
• Deliver notifications you have enabled;
• Provide customer support, warranty support, maintenance, and device traceability;
• Use selected information for personalization, experience enhancement, or AI improvement only when you enable the corresponding option.

We do not use data collected for a required service purpose for an optional personalization, experience-improvement, or AI-improvement purpose unless the relevant option is enabled or another valid authorization applies.

4. Permissions and Data Sharing Choices

System Permissions

The App may request access to system permissions when they are needed for a feature, including:

• Bluetooth, to discover, connect, and communicate with a DEWBU device;
• Location, to obtain latitude and longitude for the optional Outside weather feature, and where required by the mobile operating system for nearby-device discovery. The App does not use the weather feature for continuous background location tracking.
• Notifications, to deliver device, safety, connection, heating, and firmware notifications you enable.

You can review or change system permissions in your mobile device settings. If a required permission is disabled, the related App feature may not work properly.

Data Sharing Plan

The App may provide the following controls in Privacy Management:

Service Necessary

This category is enabled by default and cannot be turned off because it covers information required to provide account, device connection, heating control, safety diagnostics, operation history, firmware, and related core services.

Personalization

This category is off by default. If you enable it, DEWBU may use and synchronize profile information, heating preferences, and device preferences to provide a personalized experience across supported devices.

Experience Enhancement

This category is off by default. If you enable it, DEWBU may use selected diagnostic, feature-usage, operation-event, and App-environment information to analyze and improve App and device experience.

AI Improvement

This category is off by default and requires separate authorization. If you enable it, DEWBU may use information within the disclosed authorization scope, such as selected heating-control events, device operating status, preferences, and relevant context, to improve AI heating strategies.

If you turn off an optional category, DEWBU will stop using newly collected information for that optional purpose. Turning off an option does not automatically delete information previously collected or processed. You may request deletion as described in Section 7.

5. Sharing Your Information

DEWBU does not sell your personal information and does not share your personal information for cross-context behavioral advertising. Because we do not sell or share personal information, we do not process opt-out preference signals such as Global Privacy Control.

We may disclose information to service providers that support the App and connected-device services, such as providers of:

• Cloud Hosting and Data Storage: DEWBU uses Alibaba Cloud infrastructure to host and operate its production services. The production application server is deployed in the us-west-1 region in the United States. If you use the App from outside the United States, your personal information may be transferred to, stored, and processed in the United States. DEWBU will handle such cross-border transfers in accordance with applicable data protection laws.
• Account Authentication Services, such as Apple and Google, when you choose to use a third-party sign-in method.
• Diagnostics, App Performance, and Analytics Services, such as PostHog. Necessary diagnostic and service logs are always shared to keep the app working and secure. Additional usage and performance data is shared only when the applicable optional setting is enabled.
• Weather Services, when the related feature is enabled: DEWBU uses the OpenWeather Current Weather API to provide the optional Outside weather feature. DEWBU sends location coordinates, measurement units, and language settings through its backend. OpenWeather does not receive your DEWBU account ID, App login token, phone ID, or connected-device ID.
• Customer Support

We limit disclosures to information reasonably necessary for the relevant service. Service providers are expected to process information on our behalf and protect it in accordance with applicable agreements and law.

We may also disclose information when reasonably necessary to comply with law, respond to lawful requests, protect users or DEWBU, investigate fraud or security incidents, or support a merger, acquisition, financing, or transfer of all or part of our business, subject to applicable law.

6. Data Security

We use reasonable administrative, technical, and organizational safeguards designed to protect information collected through the App. However, no method of electronic transmission or storage is completely secure, and we cannot guarantee absolute security.

7. Your Rights and Choices

Depending on your location and applicable law, you may have the right to:

• Access personal information associated with you;
• Request correction of inaccurate personal information;
• Request deletion of personal information. If you request account deletion directly in the App, your account and its associated data and content will remain in a soft-deleted state for seven days. During this period, re-registering using the same sign-in method and account identifier will restore the account and its previously associated data and content. If you do not restore the account within seven days, the account and its associated data and content will be physically deleted and cannot be recovered. A minimized account-deletion record is retained as described in Section 8 to document and reliably enforce deletion;
• Obtain information about how your personal information is used or disclosed;
• Withdraw optional authorizations or change Data Sharing Plan settings;
• Review or change system permissions;
• Unpair a connected device; and
• Appeal or submit a complaint where applicable.

You may manage available permissions and optional data-sharing settings in the App.

To delete your account without installing or signing in to the App, use the online account deletion page: Delete your account online. You will need to verify the email address you sign in with using a one-time code before the request is accepted. Once an account deletion request is verified and accepted, the account will be deactivated and enter the same deletion process described above: it may be restored within seven days using the same sign-in method and account identifier; if it is not restored within seven days, the account and its associated data and content will be physically deleted and cannot be recovered, except for the minimized account-deletion record described in Section 8.

For other privacy requests, including a request to access or correct personal information, contact us at support@dewbu.com. We may need to verify your identity before completing a request.

8. Retention of Data

We retain information only for as long as reasonably necessary for the purposes described in this Privacy Policy, including providing App and device services, maintaining security and safety, resolving disputes, and complying with legal obligations.

Retention may vary by data category:

• Account and active device-pairing records may be retained while your account or device relationship remains active;
• Optional profile and preference information may be retained until you change or delete it, request deletion, or the account-deletion process is completed;
• Operation history displayed in the App may be stored locally for up to 7 days;
• Hardware, App, firmware-update, and notification diagnostic logs may be retained for up to 180 days where applicable;
• Authorization and privacy-setting records may be retained as needed to document and honor your choices.
• Location and Weather Data: Location readings used by the outside weather feature are held temporarily in App memory and are not stored by the App in a local database or file. Location or weather request details, including coordinates, may appear in technical network, access, or provider-error logs used for security, troubleshooting, and service reliability. These logs are retained in accordance with DEWBU’s applicable operational log-retention practices;
• Following an account-deletion request, the account and its associated data and content remain in a soft-deleted state for seven days. Re-registering during this period using the same sign-in method and account identifier restores the account and its previously associated data and content; otherwise, they are permanently deleted after seven days and cannot be recovered;
• Minimized account-deletion records are retained on an ongoing basis, without automatic expiration, to document and enforce deletion, including preventing restoration from older backups. They may contain an internal account ID, keyed one-way hashes of email or Apple sign-in identifiers, and deletion status and timestamps, but not plaintext identifiers, account content, IP address, User-Agent, or device identifiers. The hashes can verify a candidate match, but the records cannot reconstruct the deleted account or its data.

9. Children's Privacy

The App and connected DEWBU device services are not directed to children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has provided personal information through the App, contact us at support@dewbu.com.

10. Changes to This Policy

We may update this Privacy Policy from time to time. When we make material changes, we may update the “Last updated” date and provide notice through the App or by other appropriate means. If a change requires additional authorization, we will request it before using information for the new purpose.

11. Contact Us

If you have questions, requests, or concerns about this Privacy Policy or DEWBU's privacy practices, please contact:

Support Email: support@dewbu.com