DBMB - Unknown Call Silencer

Manthea Labs

In-app purchases

About this app

Silence unknown calls. Reduce spam, robocalls, scam calls, and unwanted interruptions.

DBMB is a minimalist call silencer for Android. It helps you stay focused by silencing calls from numbers that are not saved in your contacts.

Known contacts can ring.
Unknown numbers stay silent.

No ads. No tracking. No account. No online spam database.

DBMB does not try to guess who is calling you. It does not rely on community reports, cloud databases, or invasive caller ID systems. Instead, it gives you a simple rule: only the numbers you trust can interrupt you.

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What DBMB does

• Silences calls from unknown numbers
• Helps reduce spam calls, robocalls, scam calls, telemarketing, and unwanted calls
• Keeps silenced calls visible in your log
• Lets saved contacts ring normally
• Works offline
• Requires no account
• Shows no ads
• Tracks nothing

Core protection is free. Forever.

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Why it works

Spam numbers change all the time. Traditional spam blockers often depend on online databases, caller ID systems, reports, or predictions.

DBMB takes a simpler approach.

If a number is saved in your contacts, it can ring.
If a number is unknown, it is silenced.

You stay in control without giving up your privacy.

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DBMB Pro

Unlock optional features for more control:

• Extended log of silenced calls
• Trusted prefixes and custom rules
• Anonymous call counter
• Instant Reject for unknown calls
• Web search for unknown numbers

Instant Reject can stop unknown calls before they appear on screen, giving you a stronger blocking-like experience when you want it.

One-time purchase. Pay once, use it forever.

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Who DBMB is for

DBMB is useful if you want to:

• avoid interruptions from unknown numbers
• reduce spam and robocalls
• keep your phone quiet during work, rest, or focus time
• protect your privacy
• avoid heavy caller ID and spam database apps
• keep call control simple

DBMB is not another noisy spam blocker.
It is a quiet, privacy-first way to control who can interrupt you.

Only trusted numbers can ring.

Ratings and reviews

Truly the easiest, best, most reliable spam blocker I've ever used. Download, check the few settings you want, exit then forget it. I rarely have any numbers getting through these days! I had the free version for a while then, purchased it for lifetime because I couldn't not support the devs. I've turned so many to this app, hopefully they've bought it as well. Now, for those pesky spam/scam texters!

Useful for those who don't own a Google Pixel phone. Helps me against those pesky spam callers that get past the spam filter through my Galaxy S24 phone. Edit: Thank you for adding the "Silent reject" feature that other call blocker apps has, but better.

Really does what it promises! Spam Calls automatically go silent. Awesome app!

What’s new

Improved reliability and clearer Ring on Repeat information.