Privacy Policy for Chapterly

Last updated: May 17, 2026

This Privacy Policy describes Our policies and procedures on the collection, use and disclosure of Your information when You use the Service and tells You about Your privacy rights and how the law protects You.

Interpretation and Definitions

Interpretation

The words of which the initial letter is capitalized have meanings defined under the following conditions. The following definitions shall have the same meaning regardless of whether they appear in singular or in plural.

Definitions

For the purposes of this Privacy Policy:

Collecting and Using Your Personal Data

Types of Data Collected

Personal Data

We do not collect any personally identifiable information from You, including:

The Application does not require account registration. You may use the Service entirely anonymously.

Anonymous Usage and Diagnostic Data

The Application collects anonymous Usage Data and Diagnostic Data through PostHog, a third-party product analytics service. This information helps Us understand how the Service is used and to identify and fix bugs and crashes. Examples include:

A randomly generated anonymous identifier (UUID) is associated with these events to group events from the same Device for analytical purposes. This identifier cannot be linked back to a real-world identity, contact information, or any government-issued ID. It is not the IDFA or IDFV.

Use of Your Data

The Anonymous Usage Data and Diagnostic Data is used for the following purposes only:

We do not use Your data for advertising, remarketing, profiling, or training machine learning models. We do not sell or share Your data with third parties for marketing or any other commercial purpose.

Retention of Your Data

Anonymous Usage Data is retained on PostHog's servers for as long as necessary for analytical purposes and may be deleted earlier upon Your opt-out. We do not retain copies of this data on Our own infrastructure.

Transfer of Your Data

Anonymous Usage Data is processed and stored by PostHog on servers located in the United States (https://us.i.posthog.com). We rely on PostHog's compliance with applicable data protection laws (including GDPR and CCPA where applicable) as a Service Provider.

Your Right to Opt Out

You can opt out of all anonymous analytics and crash data collection at any time from within the Application:

Settings → 資料與隱私 → 改善 Chapterly (toggle off)

Once opted out, the PostHog SDK immediately stops sending events and crash reports from Your Device. The change is persisted and applied on every subsequent launch.

Disclosure of Your Data

We do not disclose Your data except in the following limited circumstances:

Security of Your Data

The security of Your data is important to Us, but no method of transmission over the Internet, or method of electronic storage is 100% secure. All data transmission between the Application and PostHog uses HTTPS (TLS).

Third-Party Content

The Application may load and display content from third-party websites (e.g., book sources that You choose to browse). When You access content from these sources, You are directly interacting with those third-party servers. We have no control over and assume no responsibility for the content, privacy policies, or practices of any third-party sites or services. We strongly advise You to review the Privacy Policy of every site You visit.

The Application does not store, host, or redistribute any book content on Our own servers. All book data is fetched from the original third-party websites on demand and cached only on Your Device.

Children's Privacy

Our Service does not address anyone under the age of 13. We do not knowingly collect personally identifiable information from anyone under the age of 13.

Apple Privacy Manifest

In accordance with Apple's App Store requirements, this Application ships a Privacy Manifest (PrivacyInfo.xcprivacy) declaring:

Changes to this Privacy Policy

We may update Our Privacy Policy from time to time. We will notify You of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date at the top of this Privacy Policy. You are advised to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.

Contact Us

If you have any questions about this Privacy Policy, You can contact Us: