Last Updated: October 14, 2026
"PostHistory" (hereinafter referred to as "the App") regards user privacy with the utmost importance and is committed to protecting personal information. This Privacy Policy outlines our practices regarding the handling of information within the App and its accompanying Safari extension.
The App and its Safari extension collect post data viewed by the user on the web version of X (x.com / twitter.com), including post content, author details, attached media URLs, and viewing timestamps.
This information is used solely for the user's personal convenience to review, search, and organize their own browsing history.
No External Server Transmission
All collected browsing history data is saved strictly on the user's device (within local storage and an SQLite database). Data is never transmitted, collected, or stored on external servers, cloud services, or analytics platforms, including those operated by the developer or any third parties.
No Account Linking or Tracking
The App does not access, collect, or store account login credentials (such as X credentials), cookies, or any browser data outside of the viewed posts. Furthermore, the App does not engage in behavioral tracking or collect advertising identifiers (IDFA).
Because the App does not transmit or store collected data externally, we never provide, share, sell, or disclose personal data or browsing history to any third party.
The App contains no third-party tracking tools, analytics SDKs (such as Google Analytics or Firebase), or advertising networks designed to collect user personal data or usage metrics.
Users maintain complete control over their data and can manage or delete it at any time within the App:
Individual Deletion: Specific entries can be removed individually from the post detail screen.
Batch Deletion: From Settings > Delete, users can select "Delete Non-Favorited History" or "Clear All Browsing History."
App Uninstall: Deleting (uninstalling) the App from the device permanently removes all data stored locally.
The App is an independent utility created to assist personal browsing history management and is not affiliated with, endorsed by, or associated with X Corp. (formerly Twitter). Due to updates or structural changes to the X website, some posts may occasionally fail to record properly.
We may update this Privacy Policy to reflect changes in legal requirements or updates to the App's features. Any significant changes will be communicated via the App or our support channels.
If you have questions, comments, or concerns regarding this Privacy Policy, please contact:
Developer / Operator: naoya
Email: naoya232580@gmail.com