com.rlakkam.callblocker)Call Blocker rejects telemarketing, spam and promotional calls before the phone rings. This policy describes exactly what the app does with data. It is written to match the app’s source code, which is the authority; where this document and the code disagree, the code is what runs on your phone.
Call Blocker has no user accounts, no analytics, no advertising, no tracking and no server of its own. Screening happens entirely on your device. The only two times anything leaves your phone are a daily download of the shared spam list, and a spam report that you compose and send yourself.
All of the following stays in the app’s private storage and is never uploaded:
This data is excluded from Android cloud backup and from device-to-device transfer, so it does not leave your phone that way either. Uninstalling the app deletes all of it.
If you grant the optional Contacts permission, the app checks an incoming number against your contacts so that people you know are never blocked.
The lookup uses Android’s PhoneLookup provider and asks one question: does any contact have this
number? The answer is a yes or a no. No contact is ever copied into the app’s database, read into
a list, or transmitted anywhere. The permission is optional and the app works without it — without
it, contacts simply are not treated as an allow reason.
1. Daily spam-list sync. The app downloads a public, community-maintained list of spam numbers from:
https://raw.githubusercontent.com/RajeshLakkam/call-blocker-spam-list/HEAD/spamlist.json
This is a plain download. No information about you, your phone, your calls or your contacts is sent with it. As with any web request, GitHub (the host) can see the IP address the request comes from; that is GitHub’s processing, governed by GitHub’s Privacy Statement, and the developer neither receives nor stores it.
2. Spam reports — only when you choose to send one. If you report a number as spam, the app opens your own email app with a message pre-filled and addressed to the developer. Nothing is sent until you press send in your mail app, and you can read and edit the message or discard it first. The app holds no mailbox credentials and cannot send mail on your behalf.
A report contains: the reported phone number, the name the caller claimed, any description you typed, the category you picked, and the date. Because it arrives as ordinary email, the developer also sees your email address and can reply to it.
Reports are used only to maintain the public spam list. A reported number may be added to that public list, which is then distributed to all users of the app. Your email address is never published, shared or added to any mailing list, and is used only to reply to you about the report. Do not include anything in the description field that you do not want the developer to read.
The app’s About screen can open a UPI app so you can send a voluntary tip. This is entirely optional, unlocks no features, and gives the app no access to your payment details — the payment happens inside your own UPI app, and the developer sees only what any UPI recipient sees.
| Permission | Why |
|---|---|
| Contacts (optional) | To avoid blocking people in your contacts. On-device only. |
| Notifications | To tell you a call was blocked. |
| Internet / Network state | To download the shared spam list. |
Call blocking itself needs no permission: Android binds the app’s call-screening service directly. The app does not request call-log access, SMS access, microphone, or location, and cannot read your call history, your messages, or where you are.
Call Blocker is a general-purpose utility and is not directed at children under 13. The developer does not knowingly collect personal information from children.
Blocked-call history is deleted automatically after 8 days. Everything else the app stores stays until you remove it in the app or uninstall. To have a spam report you emailed removed from the public list, or from the developer’s mailbox, write to rajesh.lakkam327@gmail.com.
App data is held in Android’s private per-app storage, which other apps cannot read. The spam-list download is made over HTTPS.
If this policy changes, the revised version will be published at this address with a new effective date, and material changes will be noted in the app’s release notes.
Questions about this policy, or requests about your data: rajesh.lakkam327@gmail.com