iPhone Screenshots


Numbo: Call Blocker rids you of all surprise and spam callers. Sounds good, right? Never again will you have to wonder who‘s on the other end of the line – Call Blocker will take care of all your unwanted and unknown calls and messages. Simply enjoy your life without distractions.

Call Blocker is an amazing tool that will help you:

Call Blocker immediately tells you whether the person calling you is one of your contacts or possibly a blacklisted number from the database. The app offers you Caller ID lookup, showing your business information instead of only the usual location. You can choose which action to take and get rid of phone spammers forever!

Block all those unwanted numbers - robocalls, auto calls, telemarketers, and other scam callers. Be the one who decides which calls and messages are worth your attention.

The app shows you caller ID or blocks calls automatically based on your preferences. You can choose a different setting for each category for the database - so block spam, scam, and telemarketing calls but let the app identify trustworthy numbers or unknown callers.

From now on, you can filter your incoming text messages with keywords. The app will detect the entered keyword in your texts and filter it into a junk folder.

The app compares all your calls with the numbers in our database. The database is updated regularly to ensure your privacy and security. We deal with unwanted numbers so you don’t have to.

Add numbers of unwanted callers to a user-shared database. We’ve got your privacy covered and will never share any of your contacts with the list.

Decide what to do with unwanted callers. Do you want to block them from ever calling you? Or do you want to leave them access but be warned when their number comes up? Or do you want to deal with each number individually? It's all up to your decision.

You can also compare any missed calls from unknown numbers with the database list and find out the identity of the caller easily.

Back up your blacklist and access it easily by signing into your account and sharing it across all your devices.

Get access to a high-quality database of spam numbers that grows day by day and is verified by our professional team. After subscribing, you’ll also be able to see comments from other users that can help you decide whether to pick up or not.

All the data from the database with unwanted numbers and callers is provided by Tellows.
We offer a monthly or yearly subscription. The subscriptions are auto-renewable. Payment will be charged to your iTunes Account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off 24 hours before the end of the current period. All subscriptions can be managed by the user in Account Settings.

Privacy Policy: https://www.numbo.com/privacy-policy/
Terms of Use: https://www.numbo.com/terms-of-service/

What’s New

Version 3.0.1

We've added new videos with app previews showing you newly added features - take a look!

If you enjoy Numbo, let us know with 5 stars or a review. Thank you for your support.

Ratings and Reviews

4.1 out of 5
925 Ratings

925 Ratings

KristyPie ,

Wish I could get a refund

This app does nothing to prevent spam/telemarketing calls. I get 4-10 calls per day, and I have to manually input these numbers into the data base. Then I get repeat calls from the same number. It isn’t blocked, and it shows up with the label I just gave it. I might as well label them in my own address book, who needs this app to do it? I seriously have no idea what I paid for with this app. Because of the good reviews, I paid for an entire year of service. I had reservations within days of subscribing, but gave it a fair chance. It’s been two months and I’m getting more calls than ever!

ATT sent a message regarding their service to prevent unwanted calls. In just the first 24 hours, they blocked 17 unwanted calls, showed a caller ID labeled “spam”, “bill collector”, or “telemarketer” on at least 5 calls that did ring through, and only let one unlabeled number through (I knew it was spam based on it being nearly identical to my number). And, this is with the free service! I’m not even paying for the upgraded subscription! Save your money here and try the ATT service. They are currently doing for free exactly what I thought I was paying for here. Someone should label this app as a SCAM.

Developer Response ,

Thank you for your feedback. You can always contact our support for additional help or ask Apple for a refund. Make sure our app is set as a primary call blocker otherwise it will now show our database result properly. We can not have spam numbers immediately in the database once they start calling from a new numbers. Our database consist on our users reports.
We now focus more on database quality and try to allow legal companies to whitelist their numbers.

Ddenai ,

How the hell do they have nearly five stars?

I see I am not alone I have been trying to get a refund for this app for over a month I’ve been contacting Apple and I have been contacting PayPal I’m trying my best to get this refund. I have contacted this company through their only contact, just an email I have sent emails up on emails to them and they do not respond. To be honest I don’t know how Apple can just facilitate this FRAUD. These guys are using 80s technology in a far more sophisticated and highly technologically advanced age of VOIP phones. They don’t protect against neighbor spoofing Or spoofing of any kind. I have done my own investigations on who’s calling my phone and I have home-improvement people keep calling over and over and I know it’s the same people and I also found out that I was on some list for collections which I had to straighten out with the collection companies they thought I was some person and I told him I don’t know who that is I’ve had this number for 15 years etc. Etc. This is my phone number! And this is what is so upsetting this company is praying on our misfortune!

Gukenheimer ,

Scam and false advertising

This is the biggest App scam on the market; leading you to believe by downloading the app the app will screen and block all spam, or scam calls for you. The misleading part is “you” have to first find out an incoming call is a spam/scam, then add it to the list in the Numbo app yourself! How stupid and wasteful!? I would have been better off just blocking the number on my phones blocking accessibility and saving my money! Also, it’s almost impossible to unsubscribe! So, if you can’t unsubscribe...guess what?! You are charged automatically, thus continuing their wasteful services!! They don’t supply you with a customer service number or email to contact!! If you are really truly legit, please reply with an email/ customer service number!!


Year access to spam database
Receive app updates of reported spam numbers.
Free Trial
Month access to spam database
Receive app updates of reported spam numbers.
Free Trial


Master Internet, s.r.o.
144.5 MB

Requires iOS 10.0 or later. Compatible with iPhone.



Age Rating
Rated 4+
© 2017 Master Internet, s.r.o.
In-App Purchases
  1. Year access to spam database $24.99
  2. Month access to spam database $4.99
  3. Year access to spam database $18.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like