Last updated: 2026-08-09. This document is a draft pending legal review and is not yet the published policy.
What stays on your phone
The list of numbers is downloaded to your device and matching happens there. CallShield does not receive your call history — iOS does not make it available to apps, and the app does not ask for it.
What the server sees
- Your email address, to sign you in and to identify your subscription.
- A device identifier CallShield generates, so a subscription can be limited to a number of devices.
- Ordinary request metadata (IP address, timestamp) in server logs.
Numbers you block or allow yourself are stored on the device and are not sent to the server.
The launch list
If you enter your email address on this site to hear when the app launches, we store that address and the time you entered it. Nothing else — not your IP address, not your browser, not where you came from. This site carries no analytics and no third-party scripts.
It is used for one email, when CallShield reaches the App Store. Reply to that email to be removed, or write to support@callshield.me at any time and the address is deleted. Joining the list does not create an account.
Text messages
CallShield can file scam text messages into the Spam folder in Messages. When a text arrives from a sender iPhone treats as unknown, iPhone passes CallShield the sender’s number and the text of that message. A sender saved in your Contacts is never passed, nor is anyone you have replied to, nor any iMessage.
The message is checked on your phone, against the number list already stored there and any names you have chosen to block. CallShield answers iPhone with “file this as spam” or “no opinion”, and iPhone does the filing.
None of it leaves your phone and none of it is stored. Apple’s interface offers a way to send the message to a server and ask what to do with it. CallShield deliberately does not use it. The extension keeps no record of the messages it has seen — not their text, not their senders, not a count.
A filed message still arrives. No app can stop a text; filing changes only which folder it lands in, and you can read anything under Spam whenever you like.
Reporting a number
If you use the reporting feature, CallShield opens a text message to 7726, your carrier’s spam line, pre-filled with the number. You send it yourself and it comes from your number. CallShield does not send it for you and does not receive a copy.
Deleting your data
Email support@callshield.me and your account and its device records will be deleted. Deleting the app removes the on-device list and your own block and allow lists.