No account, no contact upload. We never read or upload your contacts, and all data stays on your device.
No complex setup. Flip one switch and choose block or silence — the app handles unknown numbers for you.
Allow list and repeat-call bypass let the calls you need — family, clinics, delivery, work — still get through.
Built around numbers not in your contacts — while letting the calls you need come through.
Automatically rejects calls from numbers not in your contacts and logs them.
Keeps the call but mutes the ringer, so you never miss something important.
Always-allow numbers — match an exact number or a prefix.
If the same number calls back a set number of times within a set time, it's allowed automatically.
Review every handled call anytime to check nothing slipped by.
See how many interruptions you cut over the last 7 and 30 days.
Install from Google Play and allow the call-screening permission. Done.
One switch decides whether unknown numbers are rejected or quietly silenced.
Allow list, repeat-call bypass and filter scope keep the calls you need.
See handled calls and reduced interruptions in the history and stats screens.
Real 5-star reviews from Google Play, shown in their original languages.
Wow! just absolutely wow! I have had thee worst time with spam calls over the years and this app is truly a godsend. I went from maybe 8 to sometimes 15 calls a day from spam and unknown numbers — that number has fallen to ZERO. Thank you guys, your app has solved a problem in my life. 10/5 stars.
하루에 모르는번호로 전화가 500통씩오는데 이건 혁신이네요 감사합니다
Excelente aplicación, de verdad que si te bloquea todas esas llamadas que no tengas registrado en tu teléfono, pero si permite la de tus contactos registrados. Así se evita uno tantas llamadas spam o de estafas. 10/10 esta app.
Instalei ontem e voltei aqui hoje para avaliar. Realmente é eficaz… agora esse aplicativo está bloqueando todos, somente não bloqueia os números que estão salvos nos meus contatos. Parabéns! Vocês são Incríveis. Nota 1000.
Приложение монстр по защите от ненужных входящих звонков. Простое и работает. Установил вчера, ждал входящих звонков, сегодня убедился в надёжной блокировке. Благодарю, уважаемый разработчик!
tbh this is the beauty, "SSS" level app — small, smart and simple. Guys it's awesome: no menus, no ads, no options, no BS. Open the app and you have ONLY 3 tabs… never saw such a smart app. Straight to the point.
fantastico in 1 giorno... 14 chiamate silenziate tutta pubblicità... grazie
es la mejor opcion de bloqueo de llamadas fraudulentas, si hubiese 10 estrellas, les pondría, gracias por crear esta maravillosa app.
Muito bom o aplicativo. Desde que eu instalei ele, tive paz. Nem vejo quem me ligou, que não são os meus contatos. O App não tem propaganda, não precisa de login, é super prático. Recomendo demais.
Thank You Very Much, Your App Stopped more Than 60 Spam Calls Per Day!!! I have a Samsung Galaxy A14… I Have Over 1,000 Numbers Blocked and Reported. THIS APP STOPPED THEM ALL!!! GOD BLESS YOU FOR MAKING THIS APP!!!
좋습니다 너~무 좋아요 다른 앱들은 일일히 스팸 전화 번호를 입력을 해야 하는데 이앱은 스팸 전번을 입력 안시켜도 차단을 해줘서 너~무 좋아요 감사 합니다 잘 쓸께요 번창 하세요 ~good~
My phone (Samsung Note 10 on Verizon) has a built-in feature to block calls not in my contacts. It simply does not work at all. This app does! Perfectly! I was getting up to 10 spam calls per day. All gone now. Simple and 100% effective app.
I have had this app for a little while now, an I haven't gotten any spam calls.. this app seems to work really well. Thanks to Block Unknown Callers for seeing after my phone an giving me back my sanity… haha. Thanks to all!! Respectfully, VIVIAN G GENTRY 💖🙏
tbh this is the beauty, "SSS" level app — small, smart and simple. Guys it's awesome: no menus, no ads, no options, no BS. Open the app and you have ONLY 3 tabs… never saw such a smart app. Straight to the point.
fantastico in 1 giorno... 14 chiamate silenziate tutta pubblicità... grazie
es la mejor opcion de bloqueo de llamadas fraudulentas, si hubiese 10 estrellas, les pondría, gracias por crear esta maravillosa app.
Muito bom o aplicativo. Desde que eu instalei ele, tive paz. Nem vejo quem me ligou, que não são os meus contatos. O App não tem propaganda, não precisa de login, é super prático. Recomendo demais.
Thank You Very Much, Your App Stopped more Than 60 Spam Calls Per Day!!! I have a Samsung Galaxy A14… I Have Over 1,000 Numbers Blocked and Reported. THIS APP STOPPED THEM ALL!!! GOD BLESS YOU FOR MAKING THIS APP!!!
좋습니다 너~무 좋아요 다른 앱들은 일일히 스팸 전화 번호를 입력을 해야 하는데 이앱은 스팸 전번을 입력 안시켜도 차단을 해줘서 너~무 좋아요 감사 합니다 잘 쓸께요 번창 하세요 ~good~
My phone (Samsung Note 10 on Verizon) has a built-in feature to block calls not in my contacts. It simply does not work at all. This app does! Perfectly! I was getting up to 10 spam calls per day. All gone now. Simple and 100% effective app.
I have had this app for a little while now, an I haven't gotten any spam calls.. this app seems to work really well. Thanks to Block Unknown Callers for seeing after my phone an giving me back my sanity… haha. Thanks to all!! Respectfully, VIVIAN G GENTRY 💖🙏
Wow! just absolutely wow! I have had thee worst time with spam calls over the years and this app is truly a godsend. I went from maybe 8 to sometimes 15 calls a day from spam and unknown numbers — that number has fallen to ZERO. Thank you guys, your app has solved a problem in my life. 10/5 stars.
하루에 모르는번호로 전화가 500통씩오는데 이건 혁신이네요 감사합니다
Excelente aplicación, de verdad que si te bloquea todas esas llamadas que no tengas registrado en tu teléfono, pero si permite la de tus contactos registrados. Así se evita uno tantas llamadas spam o de estafas. 10/10 esta app.
Instalei ontem e voltei aqui hoje para avaliar. Realmente é eficaz… agora esse aplicativo está bloqueando todos, somente não bloqueia os números que estão salvos nos meus contatos. Parabéns! Vocês são Incríveis. Nota 1000.
Приложение монстр по защите от ненужных входящих звонков. Простое и работает. Установил вчера, ждал входящих звонков, сегодня убедился в надёжной блокировке. Благодарю, уважаемый разработчик!
Thank You Very Much, Your App Stopped more Than 60 Spam Calls Per Day!!! I have a Samsung Galaxy A14… I Have Over 1,000 Numbers Blocked and Reported. THIS APP STOPPED THEM ALL!!! GOD BLESS YOU FOR MAKING THIS APP!!!
좋습니다 너~무 좋아요 다른 앱들은 일일히 스팸 전화 번호를 입력을 해야 하는데 이앱은 스팸 전번을 입력 안시켜도 차단을 해줘서 너~무 좋아요 감사 합니다 잘 쓸께요 번창 하세요 ~good~
My phone (Samsung Note 10 on Verizon) has a built-in feature to block calls not in my contacts. It simply does not work at all. This app does! Perfectly! I was getting up to 10 spam calls per day. All gone now. Simple and 100% effective app.
I have had this app for a little while now, an I haven't gotten any spam calls.. this app seems to work really well. Thanks to Block Unknown Callers for seeing after my phone an giving me back my sanity… haha. Thanks to all!! Respectfully, VIVIAN G GENTRY 💖🙏
Wow! just absolutely wow! I have had thee worst time with spam calls over the years and this app is truly a godsend. I went from maybe 8 to sometimes 15 calls a day from spam and unknown numbers — that number has fallen to ZERO. Thank you guys, your app has solved a problem in my life. 10/5 stars.
하루에 모르는번호로 전화가 500통씩오는데 이건 혁신이네요 감사합니다
Excelente aplicación, de verdad que si te bloquea todas esas llamadas que no tengas registrado en tu teléfono, pero si permite la de tus contactos registrados. Así se evita uno tantas llamadas spam o de estafas. 10/10 esta app.
Instalei ontem e voltei aqui hoje para avaliar. Realmente é eficaz… agora esse aplicativo está bloqueando todos, somente não bloqueia os números que estão salvos nos meus contatos. Parabéns! Vocês são Incríveis. Nota 1000.
Приложение монстр по защите от ненужных входящих звонков. Простое и работает. Установил вчера, ждал входящих звонков, сегодня убедился в надёжной блокировке. Благодарю, уважаемый разработчик!
tbh this is the beauty, "SSS" level app — small, smart and simple. Guys it's awesome: no menus, no ads, no options, no BS. Open the app and you have ONLY 3 tabs… never saw such a smart app. Straight to the point.
fantastico in 1 giorno... 14 chiamate silenziate tutta pubblicità... grazie
es la mejor opcion de bloqueo de llamadas fraudulentas, si hubiese 10 estrellas, les pondría, gracias por crear esta maravillosa app.
Muito bom o aplicativo. Desde que eu instalei ele, tive paz. Nem vejo quem me ligou, que não são os meus contatos. O App não tem propaganda, não precisa de login, é super prático. Recomendo demais.
Does the app read or upload my contacts?
No — and it goes further than most apps can claim: the app has no contacts permission at all. It never requests READ_CONTACTS. This is possible because of how it works: Android's call-screening system only hands the app calls from numbers that are not already in your contacts. The contact matching happens inside the operating system, so the app never even sees your contact list, let alone uploads it. Your contacts stay where they belong — on your phone, untouched.
What permissions does the app actually need, and why?
Very few:
The app requests no access to your contacts, call logs, microphone, location, storage, or messages.
Where is my data stored? Is anything sent to a server?
Everything — your block/silence history, statistics, allow list, and settings — is stored locally on your device. There are no user accounts and no cloud sync, so there's nothing to leak or breach.
Does it read or block my text messages (SMS)?
No. The app has no SMS permissions and only deals with incoming voice calls. Your messages are never touched.
Do I need to sign up, log in, or pay?
No to all three. There's no account, no email, no personal info, and no subscription. Install it, set it as your call-screening app, flip one switch, and you're protected. The app is free, supported by ads.
How do I set it up?
After installing, the app asks to be set as your default call-screening app — tap to confirm in the system dialog. Then choose a mode (Block or Silence) on the main screen. That's the entire setup; it takes a few seconds.
Which devices and Android versions are supported?
Android phones running Android 10 or newer (this is when Android added the call-screening role the app relies on). It's an Android-only app.
Which calls actually get filtered?
Only calls from numbers that are not saved in your contacts. Anyone in your contacts always rings through normally — the app never even sees those calls. Among unknown numbers, you can further narrow the scope (see below) and carve out exceptions with the allow list and repeat-call bypass.
What's the difference between Block, Silence, and Off?
These are the three main modes:
Can I limit filtering to just international numbers?
Yes. Under Advanced Settings → Filter Scope you can choose:
Can I silence calls instead of fully blocking them?
Yes — that's exactly what Silence mode does. The call is allowed to proceed and stays in your system call log, but your phone won't ring. It's the gentler option if you'd rather review unknown calls than reject them. You can switch between Block and Silence anytime.
Won't I miss important calls — from clinics, delivery, or a new work number?
The app is built with several safety nets so legitimate unknown callers can still reach you:
How does the allow list work?
Open Advanced Settings → Allow list and add a number. Each entry can match in one of two ways:
You can also add a number to the allow list directly from your call history with one tap, and remove it just as easily.
What is the repeat-call bypass, and how do I tune it?
It assumes a genuinely urgent caller will try again. In Advanced Settings → Repeat Calls, you set two values: a repeat count (minimum 2) and a time window in minutes. If the same unknown number calls back that many times within the window, the app automatically lets it ring through. For example, "3 times within 5 minutes" means a number that calls a third time inside five minutes gets connected.
I'm expecting an important unknown call right now. Can I pause filtering temporarily?
Yes. Use Pause filtering in Advanced Settings to switch filtering off for 30 minutes, 1 hour, 3 hours, or the rest of today. It automatically turns back on afterward, so you don't have to remember to re-enable it.
Can I see what was blocked or silenced?
Yes. The Blocked & Silenced History screen lists every call the app handled, tagged as either blocked or silenced with the time it happened. From there you can add a number to the allow list, delete individual entries (with undo), or clear everything.
What do the statistics show me?
The Statistics screen turns your protection into clear insights, including:
You can share a summary of your protection stats from this screen too.
Can I get a regular summary instead of opening the app?
Yes. Turn on the Weekly / Monthly Report to receive a notification summarizing how many calls were blocked or silenced over the period. Weekly is the default, and you can switch to monthly or turn it off entirely. (This requires notifications to be enabled.)
Why would I turn on notifications?
They're optional, but they power three things: real-time alerts when a call is blocked or silenced, your weekly/monthly protection report, and milestone badges. If you prefer zero interruptions, you can leave them off and the filtering still works exactly the same.
Will the caller know they were blocked?
With Block, the call is rejected — the caller typically hears a busy tone or is forwarded to voicemail, much like a normal declined call; there's no message saying "you were blocked." With Silence, the caller's experience is completely normal (they hear ringing) — only your ringer is muted.
Is the app really free? What's the catch?
It's free and supported by ads. There's no paid tier required for the core blocking, silencing, allow list, scope, repeat-call, history, and statistics features described here.