KnownCalls No-Ads Calls Blocker
100% free app to get rid of unsolicited calls
KnownCalls is the new absolutely free call blocker for Android that helps fight spam calls while respecting your privacy.
With KnownCalls your phone will automatically reject calls from numbers not in your Phone book. It will save you time wasted on answering spam calls and messages, and make you an uninteresting target for fraudsters.
No Internet connection required – the app doesn’t use external resources. Works solely with your device’s Phone book!
Modern spammers usually call from different numbers each time so adding each number to a block list might prove ineffective – they might use another number next time they’re calling. Similarly ineffective prove to be other call blocking apps as they usually work with a delay: they have to store your phone calls to a common base and gather enough of information to conclude a number belongs to a spammer, only after which the block works. However, with that mechanism, you might be among those earliest recipients they still get through to. But not with KnownCalls! KnownCalls uses your device’s Phonebook only so rejection of unknown callers is instantaneous. KnownCalls does not collect or send information on your phone calls anywhere!
Feel free to use this QR code to download KnownCalls from Google Play:
1. Take a mobile phone or tablet with camera in it
2. Point your camera at the QR code
3. Next you’ll be re-directed to Google Play
4. Download and install KnownCalls free call blocker app for your Android device
KnownCalls truly stands out from other call blocking apps for its simplicity and conditions of use:
Several levels of whitelisting: blocks calls not from Contacts or not from Favorites.
Mutes unsolicited text messages.
Internet connection is not required.
Easy 1-click functionality.
Installs well on almost any contemporary Android device with Android OS 10 and up.
Stop annoying buzzing from call centers, telemarketers and fraudsters, or robocalls that always distract you in the middle of something!
Finally you can enjoy silence – and be sure that the trusted callers will get through.
This app is for those who don’t answer calls from any unknown numbers and want stop getting them: people who want to be reached only by their acquaintances listed in their Phonebook, children, seniors, businessmen who have secretaries for contacts of new clients, etc.
This app is not for you if you want to get calls from unknown numbers on a constant basis.
Recommend KnownCalls to your family and friends – let them feel tranquility of no spam calls or messages too!
* Download KnownCalls – Call Blocker from Google Play or our website and install it on your device.
* Turn on filtering with one click.
* Done! All calls coming from numbers that are not in your Contacts or Favorites will be automatically rejected without bothering you. Bonus: the website version will grant you the opportunity to mute text messages too!
In devices powered by Android 10 rejected calls will not be written in the device’s call log (‘Recents’/’History’/’Dialer’ tab of the Contacts app).
In devices powered by Android 11 and up rejected calls will be written in the device’s call log (‘Recents’/’History’/’Dialer’ tab of the Contacts app) so you can alwys check that the app is working and that the rejected calls indeed come from unknown numbers.
The app is non-profit so it does not offer customer care or technical support service. You can ask your questions and seek advice in the KnownCalls community.
Also, we’d love to hear your feedback and improvement ideas! Open feedback form
The KnownCalls app is a perfect call blocker for
* Parental control: protect your kids by creating a whitelist of trusted numbers, and block calls from any other phone numbers.
* Public people: stop the flow of distracting phone calls while keeping accessibility for known callers.
* Businessmen: let KnownCalls automatically filter out spam call center buzzes, while still allowing calls from your Contacts.
* Senior protection: make sure scammers don’t get to take advantage of your vulnerable elderly by blocking calls from any unknown numbers.
We also do custom development! Contact us if you need a software product created, fast and affordably.
KnownCalls is the unique combination of privacy protection, easy functionality and availability. The app is free of charge. Besides, no Internet accessibility required!
KnownCalls does not gather, store or send your personal information.
If you are a businessman, polititian or a public person, your number is probably in public display. Which means by now you must be tired of unending spam and other unsolicited calls that you cannot get rid of as you need to be accessible by customers, suppliers, authorities.
Now there is a solution – new free app for Android KnownCalls is a call filter that allows to block calls from unknown calls leaving you in touch with the rest of your contacts. No more wasting even seconds of your time to answer annoying spam calls!
Use KnownCalls- Call Blocker if you are worried about the rise of scammers that could fraud your seniors: block all calls from contacts not in the Phone book.
KnownCalls is also a great parental control tool. Make sure that children are not intimidated by strangers yet are reachable to parents, pals, and school contacts.
Accumulated effect: Even if you are assaulted with spam calls now, using KnownCalls will make you a not interesting target for call centers over the time.
‘Works like a charm on my child’s Galaxy 10’
‘Very nice app for my Android that blocks unwanted callerID-s’
‘FREE app with NO ADS that actually WORKS,,, Is it even POSSIBLE ? Wow !’
Need more features? Have a suggestion what we should add? Please share your ideas with us! Contact us with the form below.
Any feedback is greatly appreciated! Let’s grow together and unite to make the best app to enjoy silence of no spam calls!
October 14, 2022: A new version of KnownCalls is released. It offers the new additional option to block all incoming calls when the phone is in use – i.e. when its screen is on, for example, when you’re making a video or a story or taking part in an important conference.
August 18, 2022: The first version of KnownCalls is released! Easy functionality, and privacy secure.
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