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tellows - the best caller ID! Spare yourself nerve-wrecking calls and save time and money! Download the app and classify unknown calls! It will grant you access to the tellows community´s vast database on your iPhone!

We recommend this app to everyone who uses iOS 9 or lower. For more individual features like login and blocking phone numbers, we recommend the new optimized app "tellows Caller ID & Block".

If you use Exchange Server or CarDAV-accounts to synchronise your contacts, please read the information given in our support page!

- over 20000 comments on dubious rated phone numbers
- up-to-date spam warnings thanks to the feedback of more than 10 000 users per day (only on tellows.co.uk)
- 7 million visitors use the services of the user platform tellows worldwide each month to share their experiences regarding unidentified and dubious telephone numbers


This is how it works:

tellows is an open forum for phone numbers, based on the comments and experiences of all tellows users, giving you access to more information than a regular telephone directory. Currently, the tellows consumer protection services on www.tellows.co.uk are being used by more than 250 000 visitors per month throughout all of the UK, sharing their experience regarding unknown or dubious phone numbers.


Search and comment on anonymous telephone numbers:

If you received a phone call from an unknown number on your iPhone, you can look it up directly after hanging up by copying it from your call list. Just copy the number from the details list (after pressing on the number for a couple of seconds) and paste it on the search field of the Tellows app.

You will now be directed to the phone number´s detailed information, including place of origin, owner, reason for the call and comments from other users. If no helpful information were available, feel free to leave a comment with whatever information you have and help others who might eventually come across the same caller. This is the way our database is fed on a daily basis: it is our users who provide valuable information for the whole community.

Real-time identification of suspicious calls:

After you imported the most notorious spam and scam phone numbers you can easily recognize unsolicited telemarketers, subscription scams and annoying surveys on the first ring with the full version of the tellows app. Thanks to the tellows users' rating, every phone number gets its own tellows score showing whether a phone number is reliable or not. For this purpose, the app creates 3 new entries in your contact list which will contain all dubious phone numbers with a tellows score of 7, 8 and 9. Once you receive a call from such a number, the phone number's tellows score will be displayed on your phone to warn you of the incoming threat.

---- FAQ ----

Is there information to all phone numbers available?

Since tellows is no official telephone directory, and since it is not our aim to provide data about private numbers, we are unable to provide information regarding all existing phone numbers. Our goal is rather to provide useful information about general unknown or suspicious numbers of public interest. The data brought to you is based on the complete and undelayed information provided by the rest of our community. The more you share your experiences with others –be it through the website or through the App -- the more efficient our service will be.


tellows on the web:

Website: www.tellows.co.uk
Blog: blog.tellows.co.uk
Twitter: www.twitter.com/tellows_de/
Support URL http://blog.tellows.co.uk/2012/01/app-support/
Privacy Policy URL (Optional) https://www.tellows.co.uk/c/about-tellows-uk/privacy-policy/

What's New

Version 2.0.6

Fix for iPhone X

Ratings and Reviews

tellows Pro Caller App


Cheapest way I've ever found to block the multitude of PPI calls I get every day! From what I understand, the internet site has gigantic lists of nuisance callers, so when you download the app, your phone can access to all this info and pick up on calls that are going to be a pain. Sure enough, whenever a PPI 'helpline' has come through to my phone in the last few days since I bought the app, my screen has flashed up with a warning sign and I know not to answer it. Nifty!

Awesome app

Reid night

This app is amazing it downloads all known numbers that have been reported online as harassment and pops them all in your phone I'm for ever getting them and its hard to keep track on the ones I don't want to pick up for and I also don't have to google the number after to know yay

Nicely Done


Although I couldn't get the App to work straight away I'm still giving 5/5. It's the best App out of the Caller ID Apps. Easy to work with and highly functional. I'd recommend it as an essential for any iPhone user.


Netzberater UG (haftungsbeschraenkt)
23.5 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.
English, French, German, Italian, Japanese, Portuguese, Russian, Spanish, Swedish
Age Rating
Rated 4+
© Netzberater UG 2012-2016


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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