tellows - Caller ID & Block

Contains adsIn-app purchases
4.0
25K reviews
Content rating
Everyone
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

📞 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.

🔎 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.

💬 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

📞 Caller identification with tellows score
🔎 Reverse phone number lookup
⭐ Community-based risk assessment
🌍 Information about number origin

Premium features (in-app purchase)

🚫 No ads
🔄 Automatic blocking of risky numbers
📴 Offline caller identification
📋 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

4.0
24.7K reviews
ron bo
June 20, 2026
The reporting function does not work. I have two phones and reporting and rating used to work, but now all the app does after you complete your entry for a phone number and rating and hit send. The app comes back with the message that says: "There are no ratings on the numbers yet." 🙄 I reported this to support via email but no improvement whatsoever.
Did you find this helpful?
tellows
June 22, 2026
We are very sorry to hear that. Please send us the numbers you tried to rate, so we can have a better understanding of the situation.
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
120 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
David “Nitro Superdave The Viper” Lee
June 15, 2026
Very happy user.Downloaded this app and I seen NO ads and it blocked scammers on contact.Hardship loan scams,Medicare Scams,social security scams,everything.And I tried the free trial for the yearly version.Awesome! Way better than eyecon!
1 person found this review helpful
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tellows
June 22, 2026
Thanks for your review! Please recommend our app to your friends :)

What’s new

Android 15 fixes
Added optional notifications