JCWS Audio Companion · updated 16 September 2026
Nothing. The app has no analytics, no advertising, no tracking, no crash reporting, and no third-party SDKs. There are no user accounts and no sign-in.
Audio and PDF files you download for offline use, your playback position and speed, and which lessons you have expanded. All of this is stored only on your iPhone and is removed when you delete a download or uninstall the app.
The app fetches the course index and streams audio and PDF files from a Cloudflare Worker. Those requests carry a shared access token and the standard network information any web request includes (IP address, timestamp). No personal identifiers are attached, no request log is retained for analysis, and nothing is shared with, sold to, or disclosed to any third party.
This app is a study aid for adult professional military education students. It is not directed at children.
Questions about privacy: see the support page.