NumberBook: Who Is Calling?1.5.1 - App Store

Finding unknown numbers was never easier!

Identify up to 99% of unknown calls with NumberBook: Who Is Calling. Our global database of 52 million analyzed numbers and companies instantly protects you from known phone scams. Our phone book is here to help you understand who is on the other end of the line.

But wait - there is more! Who Is Calling isn't an ordinary number book. Through reverse phone lookup, you can see the number's identity, country, and even location. You can finally live spam-call-free and never miss a legitimate phone call again!

WHY TO USE NUMBER BOOK: WHO IS CALLING?
It's fast - type in an unknown number; the number book will identify it and give you context on who's calling.

It's easy - Number Book: Who Is Calling makes phone number lookup pleasant and straightforward.
It's secure - Number Book: Who Is Calling does not gather or monitor your personal data.

ALL NUMBER BOOK: WHO IS CALLING FEATURES
- Large phone numbers database (regularly updated)
- Reverse phone lookup
- Company & Business identification
- Caller ID
- Reporting numbers
- Blacklist

LARGE PHONE NUMBERS DATABASE
We have more than 52 000 000 phone numbers in our database. Our users are helping us by adding new phone numbers every day. We collaborate with companies to make your experience with couriers, companies, or services much smoother.

REVERSE PHONE LOOKUP
You can search any phone number before you call back. After you type in a number, you will find supplemental information like category, country, location, and comments from other users. There are three categories of phone numbers: spam, suspicious and trustworthy.

COMPANY & BUSINESS IDENTIFICATION
Number Book: Who is Calling isn't only about finding a number. An essential feature of our app is the identification of companies. You will see on your screen - service, company, and dining places.

CALLER ID IDENTIFICATION
Number Book: Who is Calling identifies all incoming calls. You will immediately know from which category the unknown number belongs. In some cases, you will see the company's number - for example, Uber, Bolt, Deliveroo, etc.

REPORTING NUMBERS
All users can add new phone numbers to our database, write comments and choose a category for all numbers.

BLACKLIST
Add unwanted phone numbers to your personalized blacklist. You decide which phone numbers will be automatically blocked.

All mentioned features are part of premium subscription, which is mandatory for access to Who Is Calling. Auto-renewing subscription cost $1.99 monthly / $14.99 yearly - price varies by country.
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Privacy Policy: https://www.numbo.com/privacy-policy/
Terms of Use: https://www.numbo.com/terms-of-service/

Version History Bug fixes and improvements in this release include fixes for stability and performance issues. 1.5.1 07/28/2025 Compatibility with iOS 17 1.4.1 10/04/2023 The latest version contains bug fixes and performance improvements. 1.4.0 08/02/2022 Recent updates:
- you can now use the application in French or Arabic
- bug fixes and performance improvements 1.3.3 02/10/2022 A new update is here!
- From now you can send us feedback even if an error occurred during the database update.
- Minor bug fixes and improvements. 1.3.2 12/15/2021 New update is here!
- Now, you can report a number directly from a call log in your iPhone.
- We added blog posts.
- We fixed minor bugs. 1.3.1 10/26/2021 The big update is here!

Now you can vote other users rating in selected number lookup. On the main screen you will find history of last search number and whisperer, which will help you to identify number. Other new feature is area code location. In selected number detail you can see location with map. 1.2.0 09/20/2021 First update of Who Is Calling is here!

We added tutorial and onbarding to make your introduction to app much smoother. We also fixed minor bugs. 1.1.2 08/23/2021 1.0.1 08/03/2021