tellows - Caller ID & Block

Contains adsIn-app purchases
21.5K reviews
Content rating
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About this app

Stay away from spam calls!
Rate numbers, identify robocalls and block calls with our tellows app. Benefit from the free search for caller ID and info of unknown numbers, spam call blocker, personal blacklist and more!

How the App Works
๐Ÿ“ž Identify unknown caller immediately (Caller ID)
Decide which calls you are going to answer! Spam call, scammers or annoying calls from call centres are immediately detected with the tellows app. Incoming calls are displayed with a score from 1 (trustworthy) to 9 (not trustworthy) on the screen of your mobile phone. Besides rating, you can also recognize the name of the caller, the caller type and from where it calls

๐Ÿ”Ž Number lookup and info of unknown caller
Thanks to the huge tellows community, you will be able to find thousands of spam numbers and details to identify them. Our database is updated constantly, no more trouble from scammers or telephone advertisements!

๐Ÿ’ฌ Evaluate and comment on phone numbers
Join us and help us on our mission! Comment and evaluate unknown numbers, so we can prevent phone scams together! Connect your account and enter the tellows world on all devices.

๐Ÿšซ NEW: Call blocker and custom blocklist
In the free version you can manually block calls locally.
In the Premium version you can block calls using the community and local blocklist features. All currently rated dangerous numbers are stored on your phone and can be blocked even if the phone is offline, thanks to local updated blacklist. The Premium version does not contain any advertisements.

Features at a Glance
- Identify calls in real time with free caller ID
- Use call blocker with Premium
- Block numbers manually for free
- Search phone numbers
- Rate telephone numbers
- tellows score as indicator of the trustworthiness for improved caller ID
- Detailed number lookup
- Add numbers from our database to your address book
- Login to connect to your tellows user account
- Protection from telephone harassment, persistent call centres, phone scams, nuisance and other annoying calls
- See list of incoming SMS from unknown numbers

Premium features with in-App Purchase
- Premium version without advertisement
- Block calls by importing blacklists to your phone
- Personal blacklists with all negatively rated numbers of your account
- Offline caller ID

tellows in numbers
- Rated over 7,000 times
- Over 500,000 downloads
- More than 1.8 million numbers evaluated
- More than 200,000 registered users
- Over 27,000 numbers and calls rated each month in our community
- 7 million monthly users in more than 50 countries

Visit us on the Web
Updated on
Jan 17, 2024

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

21.3K 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
104 people found this review helpful
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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
A Google user
September 9, 2019
Call came in just now... Tellows did nothing. No popup. No information. Nothing. Had this app installed, set up and logged in for a week (yes it has all permissions granted that it asked for, and there was a strong & working Internet connection with the call came in). Whilst the idea seems sound, the app seems pretty useless to me.
38 people found this review helpful
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September 11, 2019
Hello Hedgie, thanks for the feedback. The app should show a overlay while receiving an incoming call. Please make sure that you have battery optimization disabled (this may prevents the app from being active in the background). If you still encounter problems, send us a mail to, so we can help you.
Gary Zee