tellows - Caller ID & Block

Contains adsIn-app purchases
3.9
24.2K reviews
1M+
Downloads
Content rating
Everyone
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About this app

With the tellows app, you can identify unknown calls and get helpful information about spam, advertising and scam calls. tellows is based on a large community where users rate phone numbers and share their experiences. This helps you better assess incoming calls before answering.

The ratings and comments come from other users and are continuously updated. You can look up unknown numbers, check the tellows score and add your own ratings to support other users.

How tellows works

šŸ“ž Caller identification
When your phone rings, tellows shows a risk assessment for the incoming call. The tellows score (from 1 – trustworthy to 9 – not trustworthy) helps you identify unwanted or potentially risky calls.

šŸ”Ž Look up unknown numbers
Search phone numbers and view ratings, comments and general information about the origin of the number, such as the country or network.

šŸ’¬ Rate and comment on numbers
Rate phone numbers and share your experience with the tellows community. This helps improve the database and supports other users in assessing calls.

🚫 Call blocking and personal blacklist
In the free version, you can manually block calls using a local blacklist. In the Premium version, community-based ratings can additionally be used for automatic blocking. The local blocklist also works without an internet connection.

Features at a glance

šŸ“ž Caller identification with tellows score
šŸ”Ž Reverse phone number lookup
⭐ Community-based risk assessment
šŸŒ Information about number origin

Premium features (in-app purchase)

🚫 No ads
šŸ”„ Automatic blocking of risky numbers
šŸ““ Offline caller identification
šŸ“‹ Personal blacklist with all numbers you have rated negatively

More information and support can be found on our website:
https://www.tellows.com
Updated on
Feb 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity and App info and performance
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.9
23.9K reviews
Michelle Dorman
May 20, 2021
Seems to be highly accurate. It doesn't block calls, (which is a benefit for me); instead a rating comes up based on previous user experiences with the phone number. You can read detailed info if a person leaves an in-depth review, which is very helpful. You also don't run the risk of a call being incorrectly blocked (ie a call responding to a job application). It's accurate and the user input adds the extra info that is beyond helpful. Highly recommended
119 people found this review helpful
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tellows
May 21, 2021
Hello Michelle, thanks for your nice review. In the free version you can block single numbers (if you want), when you are on the number overview page. Otherwise the caller ID alone is helpful enough to decide whether to pick up or not. Lots of fun with the app. Your tellows team
Michelle Green
May 1, 2021
Fantastic! This is exactly what I have been looking for! It automatically shows the name of the caller like a land line caller ID. It says "scam" whenever it's a # associated with a scam. It keeps a call history log too! The ads are not intrusive at all for the free version
68 people found this review helpful
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tellows
May 5, 2021
Hello Michelle, thank you for your rating and feedback. We are happy that you enjoy the app. Regards, your tellows team
Afj
November 14, 2021
I don't like to leave one star reviews but....I allowed all permissions when I started the app but when I looked at the call history, I did not recognize any number Tellows listed. When I looked at my actual phone history, it showed numbers I had dialed and numbers I had received. I uninstalled quickly. Why would Tellows have a totally inaccurate call history, especially since I allowed all permissions??
25 people found this review helpful
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tellows
November 15, 2021
Hello Afj, thanks for your feedback. It seems indeed that there is something wrong with the caller log permission. You can send us a mail at any time with your phone specifications, so we can have a look and help you set everything up correctly. Your tellows team

What’s new

Android 15 fixes