Spamurai
Free Android call blocker
Spam calls
end here.
Spamurai silently declines unknown and spam callers. Your contacts always ring. No ads, no subscriptions, and no internet, so it can't send your data anywhere.
Get it on Google PlaySee how it works
Coming soon to Google Play
Our mission
Your phone should ring for people, not robots. Spamurai was built by one developer who got tired of dozens of scam calls a day. It's free, it has no ads, and it can't sell or send your data, because it doesn't have internet permission. Everything stays on your phone, and you decide who gets through. That's the whole point.
Silent decline
Unknown callers never ring. Each declined call goes to a private Declined list, with an optional silent notice.
Allow in one tap
Declined someone you know? Tap Allow next to their number in the Declined list and their calls ring from then on.
Contacts always ring
Anyone saved in your phone gets straight through. Android never even hands those calls to Spamurai.
Second call rings
Real people call back. If the same number tries again within 5 minutes (or 2 or 10, your pick), it rings.
Numbers you called
Called the doctor or a store in the last 14 days? When they call back from that same number, it rings.
Keeps calling alerts
When one number calls 3 times in a day, you get a heads-up with an Allow button. Or let the 3rd call ring.
Spoofed & Scam Likely
Fake numbers and carrier-flagged scam calls are declined with no second chance, unless you switch that off.
Your schedule
Block 24/7, or only on the days and hours you choose. Need every call for a while? Accept All Calls for 1 hr, 4 hr or till morning.
911 callback
After you dial 911, every call rings for 4 hours (or 1 or 2) so dispatch can always reach you.
Private by design
No internet permission. It can't send your calls, your number or anything else anywhere.
How it works
1
Install
Free on Google Play. No account, no sign-up. Needs Android 10 or newer.
2
Set it as your Caller ID & spam app
Android asks once when you open Spamurai. Your normal Phone app stays your phone app.
3
Enjoy the quiet
Unknown callers stop ringing. Check the Declined list whenever you want.
Good to know
My phone said “Scam Likely,” so why does Spamurai say “Not in your contacts”?
On many phones, Samsung included, the Scam Likely label only appears on the ringing screen. The carrier or the phone app adds it, and it isn't passed to other apps or saved in Recents. Spamurai still declines the call. It's just listed as “Not in your contacts” instead of “Scam Likely.”
What if it declines someone I know?
Open the Declined list and tap Allow next to their number. From then on their calls ring, even though they're not in your contacts. Tap Call to call them right back.
Will it ever block my contacts?
No. Android checks your contacts first and only hands Spamurai calls from numbers you haven't saved.
What if a business I called calls me back?
“Numbers I've called” lets them ring if you called that exact number in the last 14 days (you can pick 7 days up to forever). Many businesses call back from a different line. If they try again within 5 minutes, Second call rings lets them through.
Can spammers still leave voicemail?
Yes, if voicemail is on. A declined call can still go to your voicemail, since voicemail lives at your carrier. Spamurai has a step-by-step guide to turning it off.
Will I miss an emergency?
After you dial 911, every call rings for 4 hours by default. Calls with a hidden number (“Private”) ring by default too, since hospitals and police often call that way.
Where do declined calls go?
Into Spamurai's Declined list, kept for 90 days by default. Spamurai also removes them from your phone's Recents, and one tap puts any of them back.
What does it need?
Android 10 or newer, and permission to be your Caller ID & spam app. Call history access is optional and turns on “Numbers I've called,” 911 callback and the Recents cleanup. Notifications are optional too.
Why didn't it catch a fake (spoofed) number?
Spotting spoofed numbers needs Android 11 or newer and a carrier that verifies caller ID. When the check isn't available, the call is still declined, just listed as “Not in your contacts.”
Does it work on my phone?
It's built for any Android 10+ phone and has been tested on Samsung Galaxy so far. If something doesn't work on yours, use Report a bug in the app.
Spamurai has no internet permission.
It can't send anything anywhere. You can check this yourself on the Play Store listing under Permissions.
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Spamurai is free and stays free. If it saved your sanity, you can buy me a coffee.
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