Updated: 31 May 2026

Effective: 31 May 2026

Introduction

CLEAR Calculator (清云计算器, hereinafter referred to as 'the App') is an on-device calculation utility provided by 芜湖灵动亿创网络科技有限公司 (Wuhu Lindicra Network Technology Co., Ltd.; hereinafter referred to as 'the Company'). This Privacy Policy is intended to explain to you, clearly and accurately, the processing of data which may be involved during the operation of the App, together with the rights which you may exercise as a user.

Please read and fully understand this Privacy Policy in its entirety before using the App.

Scope of Application

This Privacy Policy applies to CLEAR Calculator, including all of its built-in functional modules such as Basic Calculation, Scientific Calculation, Student Mode, Unit Conversion and Utility Calculation, and covers all local operations performed by users through the App's interface.

The App is a purely standalone utility. All basic calculations, conversions and utility functions can be performed without registering an account, without logging in and without an internet connection. This Privacy Policy focuses on setting out the principles governing the App's processing of data during local operation and persistent data storage.

Personal Information We Collect and Process

2.1 Personal information which the App does not proactively collect

During normal use of the App, the Company will not proactively collect any form of sensitive personal information or personally identifiable information from you, including but not limited to your name, gender, date of birth, resident identity card number, passport number, mobile phone number, e-mail address, contacts, SMS content, call logs, photographs and videos, precise geolocation, device identifiers (such as IMEI / OAID / IDFA), biometric information, health information or bank account information.

2.2 Data processed locally by the App

In order to maintain the normal operation of core functions and to provide a personalised preferences experience, the App will store the following data locally on your device:

Calculation history (including the expression entered, the calculation result and the timestamp), used for display in the History panel;

User preference settings (including angle unit, result format, default tab, scientific notation toggle, auto-save history toggle and haptic feedback toggle), used to restore your previous settings on start-up;

Panel state and display preferences under Student Mode.

All the above data are stored in the local file system of your device. The App will not automatically synchronise such data to any remote server or third-party platform.

Storage and Retention Period of Information

3.1 Location and method of storage

All user data generated by the App are stored in the local storage space of your device.

3.2 Data retention period

User preference settings: retained continuously from the time of your last modification until you change the relevant option through the Settings page, clear the app data through your system settings, or uninstall the App;

Calculation history: retained continuously from the time it is written until you clear the app data through your system settings or uninstall the App.

3.3 Means of deleting data

When you no longer need the stored data, you may delete it by:

clearing all local data of the App through the application management function in your system settings;

uninstalling the App, whereupon the system will clear the associated local data in accordance with platform policy.

Permission Requests and Use

4.1 Permissions requested in the current version

ohos.permission.VIBRATE (vibration permission)

Purpose of the request: to provide interactive haptic feedback to users;

Scenarios of use: to provide brief vibration feedback during user operations such as tapping buttons, toggling switches, selecting options and switching between pages;

Method of use: triggered only whilst the App is active in the foreground; it does not involve continuous invocation in the background;

Effect of refusal or revocation: core functions such as calculation and conversion will not be affected; only the haptic feedback experience will be lost.

4.2 Permission management

You may view the list of permissions requested by the App in the application permission management page of your device system, and may at any time decide independently whether to grant or revoke the relevant permissions. Revoking a permission will not affect your use of the App's existing functions, though it may affect the corresponding supplementary experience.

4.3 Principle of least privilege

The App strictly observes the principle of least privilege, requesting only those permissions which are necessary to deliver the core functions and basic experience of the current version.

Sharing, Transfer and Public Disclosure of Information

5.1 Sharing

The App does not currently rely upon server-side data processing in order to provide its basic calculation services and, accordingly, there is no routine scenario in which your information is shared with third parties. The Company may share such information as is necessary in accordance with law only in the following exceptional circumstances:

where required by applicable laws and regulations, legal proceedings, or mandatory requests from competent governmental authorities;

where necessary for the protection of public interests or public safety.

5.2 Transfer

In the event of a merger, acquisition, asset transfer or similar transaction involving the App, should the arrangements concern the processing of users' local data, the Company will inform you of the relevant circumstances by appropriate means.

5.3 Public disclosure

Save as otherwise provided by laws and regulations, or with your separate consent, the Company will not publicly disclose your personal information.

Data Security Measures

6.1 Technical measures

The App adopts the following technical measures to protect your local data:

All user preference data and history records are, by default, stored only within the App's private sandbox directory;

The App does not implement log uploading, automatic collection of crash reports, or analytics SDKs.

6.2 Security risk notice

Although we have adopted security measures consistent with industry standards, please understand that no local storage environment can be absolutely secure. We recommend that you:

keep your device lock screen password or biometric credentials properly safeguarded;

clear the App's local data or uninstall the App before replacing or disposing of your device.

Protection of Minors

7.1 General principle

The App is designed for general users and does not incorporate paid social networking features, content communities, targeted advertising or personalised recommendation functions.

7.2 Responsibilities of guardians

If you are a minor, you are advised to read and understand this Privacy Policy together with your guardian.

7.3 Special notice

If a guardian has reasonable grounds to believe that a minor has submitted personal information to the Company without the guardian's consent, please contact the Company, and the Company will assist in dealing with the matter after verifying the circumstances.

Your Rights and Choices

8.1 Access and correction

You may view and amend your current preference settings at any time through the App's Settings page.

8.2 Disabling specific functions

You may disable the 'Auto-save History' or 'Haptic Feedback' function at any time via Settings → General.

8.3 Deleting local data

You may delete all local data by selecting 'Clear Data' in the application management page of your device's system settings, or by uninstalling the App.

8.4 Withdrawing consent

You may withdraw your authorisation for a particular data processing activity of the App by revoking the relevant permission or switching off the relevant function toggle.

Third-Party Services and Links

The current version of the App does not embed any third-party data analytics SDK, advertising SDK, social sharing SDK or push notification SDK, nor does it contain any links or pages which redirect to third-party services.

Should a subsequent version introduce third-party services as a result of a functional expansion, the Company will notify you of the additions by updating this Privacy Policy at the time of the corresponding version update.

Updates to This Privacy Policy

10.1 Circumstances for updates

The Company may revise this Privacy Policy where any of the following occurs in relation to the App:

changes in functions or service models which result in a material change to the scope, purpose or method of data processing;

changes in the scope of permission requests;

introduction of new third-party services or SDKs;

changes in relevant laws, regulations or regulatory policies.

10.2 Method of notification

The updated Privacy Policy will be displayed on an in-app page (path: Settings → About → Privacy Policy).

10.3 Recommendation

The Company recommends that you review this page periodically so as to keep yourself informed of the latest privacy protection practices.

Disclaimer

11.1 Responsibility for local data

The App is a purely standalone application and user data are stored only locally on the device. The Company shall not bear any liability for the leakage, loss of, or third-party access to, local data which is caused by reasons beyond the App's control, including but not limited to loss or theft of the user's device, jailbreaking / rooting, compromise of the system, or failure or circumvention of the operating system's security mechanisms.

11.2 Conduct of third parties

The App does not currently integrate any third-party SDKs. Where a user proactively shares the App's calculation results or interface content with a third party by means of device system functions, such conduct shall constitute the user's own autonomous act.

11.3 Legal compliance

The App endeavours to comply with the requirements concerning the protection of personal information under applicable laws and regulations, but nothing herein constitutes legal compliance advice.

11.4 Force majeure

The Company shall not bear any corresponding liability, to the maximum extent permitted by law, for data security incidents arising from force majeure events such as natural disasters, war or acts of government, or from cyber attacks, system vulnerabilities or other causes which are not attributable to the Company's fault.

Contact and Feedback

Should you have any questions, comments or suggestions regarding this Privacy Policy, you may submit them through the review or feedback channels of the app store. We shall pay heed to common user feedback in subsequent version updates and take it into account during feature iteration.

Governing Law and Dispute Resolution

The interpretation, validity and dispute resolution of this Privacy Policy shall be governed by and construed in accordance with the laws of the People's Republic of China. Any dispute arising out of or in connection with this Privacy Policy shall first be resolved by the parties through friendly negotiation; should negotiation fail, either party may submit the dispute to the people's court having jurisdiction at the place where the Company is located for resolution by litigation.

Company Information

芜湖灵动亿创网络科技有限公司 (Wuhu Lindicra Network Technology Co., Ltd.)