Mathfuns is a platform for developer Guoyong Zhao (also known as "we") to provide you with mathematical formula editing, problem solving, drawing, analysis and other services. We has great respect for the protection of users' personal information and when you use the services provided by Mathfuns, we will collect, store and use your personal information in accordance with this privacy policy. This privacy policy contains the terms of our collection, storage and use of your personal information. We hope to clearly introduce to you how we deal with your personal information through this privacy policy. Therefore, we recommend that you read this privacy policy in its entirety to help you understand and maintain your privacy. If you have any questions about this Privacy Policy, you may contact us through the contact information published by Mathfuns. If you do not agree with any content of this Privacy Policy, you should immediately stop using the Mathfuns Services. By using any of the services provided by Mathfuns, you agree that we legally use and protect your personal information in accordance with this Privacy Policy.

1. Scope of application

This privacy policy applies to all services provided by Mathfuns.

In particular, this Privacy Policy does not apply to services provided by third parties that are subject to, linked to, or repackaged our Services. Although third parties display, link to, or repackage our Services, we do not know or control their actions and are therefore not responsible for their actions; please access or use their services with caution before you have reviewed and accepted their privacy policies.

If you allow us to share information with third-party websites, you are also subject to the third-party website terms of service and privacy policy.

2. How to collect information

We collect information in the following ways:

Process user-submitted evaluation expressions, application versions, and other information through the HTTPS RESTful API to return the results of the calculation to the customer.

Store the calculated expressions, calculation results and other information locally for users to consult and modify.

Store drawing information locally for users to view and modify.

Third party name Purpose of use Mode of use Personal information Privacy policy
Umeng corporation Statistical analysis Umeng+SDK IMEI/android ID/IDFA/OPENUDID/GUID, SIM card IMSI information etc.

Storage permissions: When you save calculator and geometry sketchpad editing information, you need to store permissions. During your operation of this application, we promise to read or store only the information necessary for the application. Turning off storage permissions will affect the save function, but will not affect other services.

3. How to use information

We use the information collected to provide you with services and improve the quality of services. To this end, we will use your information for the following purposes:

4. Information that may be shared

We do not share your personal information with any other company, organization or individual, except in the following cases:

5. Protection of minors

We attach great importance to the protection of minors' personal information. If you are a minor, it is recommended that you ask your guardian to read this policy carefully and use our services or provide us with information with your guardian's consent.

6. Change

We may make adjustments or changes to this Privacy Policy at any time. Any update to this Privacy Policy will be published on the website in the same way as the update time without further notice to you separately. The adjustment or change will take effect immediately upon publication. If you continue to use any of the services we provide or visit our relevant websites after the adjustment or change of the privacy policy, we believe that this means that you have fully read, understood and accepted the revised privacy policy and are bound by it.

7. Contact us

If you have any questions, suggestions or complaints about this Privacy Policy, please contact: