What are the best free caller ID apps?

Looking for apps for identifying the unknown calls we are getting has never been so easy especially if we want the best app for free. Are you familiar with the top picks listed below? Let's help Elizabeth Peacock by sharing your thoughts about the best apps based on user-friendliness and quality.

asked by Elizabeth Peacock
35 contributors
9 solutions
  1. 5

    #1Mr. Number

    Mr. Number

    Mr. Number is a free caller identity finder app designed to avoid spam and fraudulent calls. It is also used for identifying phone number owners by looking up through its smart dialer.

    Apps

    Android, iOS

    Free- with in-app purchases

    Cecilia del Ángel
    Written on September 14, 2018
    "I am one of those people who hate unnecessary calls from telemarketers who promote flats and apartments. So I am so thankful when I discovered mr number. Now I can easily block spam calls! Please leave me alone let me live in peace lool 😂"
  2. 3

    #2Truecaller

    Truecaller

    Truecaller is a caller identity finder which allows users to block spam calls and SMS, identify phone numbers, and search for unknown numbers. It features a community-based spam list.

    Apps

    Android, iOS

    Free- with in-app purchases

    Patricia Young
    Written on September 14, 2018
    "I often get calls from numbers that are not registered in my address book...only to find out that they are telemarketers...I understand that calling is part of their job but please, why call me at 7am??? I am not a morning person!! Call me but not in the morning :( sry but i blocked them using this app. "
  3. 3

    #3Hiya

    Hiya

    Hiya is a free app that helps users identify and block scam calls, as well as prevent spammers and marketers from calling. Available for both Android and iOS devices, it uses a reverse search system to know whoever called the user.

    Apps

    Android, iOS

    Free- with in-app purchases

    Mark Evans
    Written on September 14, 2018
    "I love the real-time feature of this app. No need to check the backlog after the call. Best part is this is free, no ads, and user friendly! This is indeed the best caller id app!"

DID YOU KNOW?

When your phone rings and a number of the caller pops up on your screen, do you get curious who is on the other line before you pick up the call? With numerous resources to communicate more effectively to people, and with many ways to communicate, not all platforms provide you the details of who the caller is. Thanks to Theodore Paraskevakos for creating a system that lets the call recipient identify the phone caller. Did you know that it took him many tries and experiments before he developed the method? In 1968, Paraskevakos was working as a communications engineer in Athens, Greece when he made possible the transmission of the caller's number to the receiver's device. Clearly, the purpose of the invention is to let the receiver identify who exactly is calling and the phone number details. Interestingly, the caller ID technology, including caller ID apps, is still widely used even today.

Meanwhile, before the caller ID was invented, African tribes used to rely on talking drums in order to know if European explorers are about to arrive in their area. They used it as a form of communication, since it could deliver detailed messages from one village to another, and was known to be faster than a person riding a horse just to deliver the message. Research also shows that the talking drum could carry information for up to 100 miles.

  1. 3

    #4CallApp

    CallApp

    CallApp is a free caller ID app for Android which is designed to identify calls and texts. This is also ideal for blocking spam calls, record phone calls, and manage contacts.

    Apps

    Android

    Free- with in-app purchases

    Judith McDonald
    Written on September 14, 2018
    "I often need to contact business enterprises to source for sponsors and this app helps me find the businesses I want to call. SMS caller id is also amazing. Plus the idea of blocking spammers is also great! The best caller id app for me!"
  2. 3

    #5Whoscall

    Whoscall

    Whoscall is designed for knowing the unknown calls. This caller ID app is also used for searching for unknown numbers even when offline, and for blocking spam and fraud calls.

    Apps

    Android, iOS

    Free- with in-app purchases

    Mercedes Sandoval
    Written on September 14, 2018
    "Of all the free caller id apps in this list, I can say that whoscall is the best becoz I can customize my mobile name card using this tool, and I like that the caller id identification works offline. So its hassle free."
  3. 3

    #6Calls Blacklist

    Calls Blacklist

    Calls Blacklist is an app by Vlad Lee. It blocks both calls and SMS, preventing anyone from getting calls or messages from unwanted, private or unknown numbers. 

    Apps

    Android

    Free- with in-app purchases

    Janet Wilson
    Written on September 14, 2018
    "This app is battery-efficient. In all fairness"
  4. 3

    #7Showcaller

    Showcaller

    Showcaller is a free caller ID block app which is designed for finding detailed caller info, blocking unwanted calls, and searching for phone numbers. It also features a smart search.

    Apps

    iOS, Android

    Free

    Andy Zhu
    Written on September 14, 2018
    "I am wondering how this app has like thousadns of phone numbers registered to their database?? Coool!"
  5. 2

    #8CallerSmart

    CallerSmart

    CallerSmart: Caller ID + Block is a free application for iOs that helps you investigate who's behind all those mystery phone numbers and SMS, avoiding unwanted calls and texts.

    Apps

    iOS

    Free- with in-app purchases

    Vihaan Nair
    Written on September 14, 2018
    "Great feature is you can identify the location of the phone number calling you. :)"
  6. -1

    #9Tellows

    Tellows

    Tellows is a mobile application which can identify an unknown caller ID in real time and enables you to evaluate and comment on phone numbers. It also has a caller block feature for those with a premium account. 

    Apps

    Android

    Free- with in-app purchases

    georgi gina
    Written on July 8, 2019
    "I've seen many caller ID apps and I think many of them are too complicated to use. This tellows app is the first one that I find quite easy to use. You can also see during incoming call whether you should pick up the call or not. It's very useful."

Summary

Best What are the best free caller ID apps
RankSolutionsTypeVotesPrice
1Mr. NumberApps 5 Free
2TruecallerApps 3 Free
3HiyaApps 3 Free
4CallAppApps 3 Free
5WhoscallApps 3 Free
6Calls BlacklistApps 3 Free
7ShowcallerApps 3 Free
8CallerSmartApps 2 Free
9TellowsApps -1 Free
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