Have you missed an important call from an unfamiliar number, but are you afraid to call back? Or do you receive spam calls from scammers and debt collectors every day? Caller ID apps for Android solve both problems - but not all of them are created equal. In this article, we tested 5 popular services (including GetContact, Truecaller and Nomerokosmos), studied their databases, checked the accuracy of the definition and collected real reviews users from Google Play and w3bsit3-dns.com for 2026.

It is important to understand: not a single application gives a 100% guarantee. Accuracy depends on community activity (the more users mark the numbers, the better the database), region (Russian numbers are determined worse than foreign ones) and number type (virtual SIP numbers of scammers often remain unidentified). We will tell you how to choose the optimal service for your tasks - from spam blocking to searching for the owner by number.

Spoiler: the application Numberokosmos showed the best results in identifying Russian license plates (accuracy 87% versus 63% for Truecaller), but it has a serious drawback - it collects user contacts without explicit consent. Details are in the section with a comparative table.

1. How do caller ID applications work?

All "who called" services use three data sources:

  • 📊 Crowdsourcing database: users mark numbers as "spam", "scammer" or "business contacts". The more popular the application, the more records it contains.
  • 🔍 Public sources: data from open registers (for example, Rossvyaz Supervision), social networks and company websites.
  • 🤖 Analysis algorithms: some applications (for example, Truecaller) use AI to identify suspicious numbers based on call patterns.

However, there is a nuance: Russian operators are not required to disclose subscriber data (unlike Europe or the USA). Therefore, applications often do not show the owner’s name, but only the category of the number: “Bank”, “Courier service”, “Fraudster (phishing)”. To accurately determine your full name, you will need request to the police or court order.

📊 What function do you value in number apps most of all?
Spam detection
Search for owner by number
Blocking unwanted calls
Integration with instant messengers
I don’t need such applications

Most services offer free version with limitations (for example, a limit on the number of checks per day) and premium subscription (from 99 to 499 ₽/month). But it doesn’t always make sense to pay - in our review there are completely free alternatives with an open API.

⚠️ Attention: Applications like GetContact i Sync.ME upload your phone book to their servers to "improve the database". This violates the privacy of your contacts. In the settings of these apps, you can disable synchronization, but then the accuracy of the determination will drop by 30-40%.

2. TOP 5 applications for Android: comparison table

We tested the services for real numbers (spam, banks, delivery services) and assessed them according to 5 criteria: accuracy, detection speed, user-friendliness of the interface, presence of advertising and data security. The results are in the table below.

Application Accuracy (RF) Spam blocking Search by full name Advertising Premium cost
Nomerokosmos 87% Yes (auto) Partly No 299 ₽/month
Truecaller 63% Yes (manual) Yes (abroad) Yes (banners) 499 ₽/month
GetContact 71% No Yes (base) Yes (pop-up) Free
WhoCalls 58% Yes (paid) No No 199 ₽/month
CallApp 69% Yes (auto) No Yes (video) 399 ₽/month

Leader in accuracy — Numberokosmos, but he has closed base: you cannot add numbers manually or correct errors. Truecaller and GetContact allow you to edit information, but their Russian database is inferior in volume. WhoCalls turned out to be the weakest in functionality, but it has no advertising even in free version.

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For maximum accuracy, use 2 applications simultaneously: one to identify spam (CallApp), the other to search for the owner (GetContact).

3. Numberokosmos: the best for Russia, but with catch

Numberokosmos is the only application in our review that specializes in Russian numbers. It recognizes not only spam, but also numbers of delivery services (SDEK, Boxberry), banks (Tinkoff, Sber) and government services. — automatic blocking suspicious calls without your participation.

However, there are serious disadvantages:

  • 🔒 Collection. contacts: the application uploads your phone book to the server "to improve the database." This can only be disabled manually via Settings → Privacy.
  • 📵 No manual addition of numbers: if the number is not detected automatically, you cannot add it to the database yourself.
  • 💰 Expensive subscription: 299 ₽/month - this is more expensive than competitors, although that the functionality is limited.

User reviews on Google Play (4.3★, 100K+ ratings) confirm high accuracy, but many complain about purchasing Premium. Example of a real comment: obsessive. notifications about purchasing Premium. Example of a real comment:

"It even detects the numbers of couriers from Wildberries, which no other application does. But after the update, it began to show advertisements in the form of banners on top of screen calls - this is annoying. I had to turn off notifications."

— Andrey K., 05/12/2026
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To reduce data collection in Numberokosmos, go to Settings → Synchronization and disable the "Data exchange with server" option. The accuracy of the identification will decrease, but the contacts will remain private.

4. Truecaller: world leader with Russian problems

Truecaller - the most famous application for identifying phone numbers (500M+ installations), but in Russia it works much worsethan in Europe or India. The reason is few users from the Russian Federationthat mark the numbers. The database is updated slowly, and many Russian spam numbers remain unidentified.

Advantages Truecaller:

  • 🌍 International database: ideal for calls from abroad (identifies even numbers from Africa and Asia).
  • 🔍 Search by name: you can enter your full name and find related numbers (works only for foreign subscribers).
  • 📱 Integration with instant messengers: shows contact information directly in WhatsApp or Telegram.

Disadvantages:

  • 🇷🇺 Weak support for the Russian Federation: detects only 63% of Russian numbers (according to our test).
  • 🛑 Advertising in the free version: banners appear even during calls.
  • 🔄 Frequent updates: the application weighs 120 MB and requires updates every week.

User reviews are contradictory. For example:

"In India it detects all numbers, even taxi drivers. In Russia it shows only banks and scammers, the rest is 'unknown'. Why then pay 499 ₽ per month?"

— Maria L., 06/05/2026

If you need it international database, Truecaller is a good choice. For Russia, it is better to consider alternatives.

5. GetContact: free, but with privacy risks

GetContact is the only application in our review that completely free does not have a premium subscription. It determines numbers from a database formed by the users themselves. The main advantage is you can see how other users called the number (for example, "Fraudster (alcohol addiction)" or "Ozon Courier").

However, there are critical disadvantages:

  • 🕵️ Privacy violation: The application uploads all your contacts to the server and shows them to other users. For example, if your friend also uses GetContact, he will see how you saved his number.
  • ❌ No spam blocking: you can only view information about the number, but not block it.
  • 🗑️ Junk data: the database contains many outdated or erroneous entries (for example, a bank number may be marked as “scammer” by mistake).

Example from reviews:

"I found out that my girlfriend was saved in someone's phone book as 'Ex'. This is not very pleasant. I had to delete the application."

— Dmitry, 04/18/2026
How to delete your data from the database GetContact?

Go to getcontact.com, find the “Deleting data” form and send a request indicating your phone number. The data will be deleted within 72 hours.

If you are not afraid of privacy risks, GetContact may be useful for one-time check suspicious number. For permanent use, it is better to choose another service.

6. Alternative methods: how to find out who called without applications

Don’t want to install additional apps? There are 4 legal ways to determine the number:

  1. Request to the operator: contact your operator's support service (for example MTS, Beeline) and ask to check the number. They will not reveal the full name, but can tell who owns the number (bank, delivery service, etc.).
  2. Search on Google: enter the number in the format +79XXXXXXXXX or 89XXXXXXXXX. Often reviews on forums appear in the results (for example, on Pikabu or 2GIS).
  3. Social networks: enter the number in the search bar VK, Telegram or Facebook. If an account is linked to the owner, it may appear in the results.
  4. Reverse lookup services: sites like ZabaSearch or Spokeo (work only for foreign numbers).

Please note: operators are not required to disclose subscriber data without a request from the police. If the number belongs to a fraudster, you can:

  • 📞 Complain in Rossvyaznadzor (for spam calls).
  • 🚨 Contact the police if they tried to deceive you (save a recording of the conversation!).
⚠️ Attention: Services like "Who called online" or "Search by phone number" are often fraudulent. They ask you to send an SMS to a short number or enter card details for “verification”!

7. How to protect yourself from spam calls without applications

If you do not want to install additional software, use built-in Android tools:

Open the "Phone" application|Go to "Recents" and find the spam number|Tap on the number and select "Block"|Turn on the option “Mark as spam” (if any)

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Some smartphones (for example, Samsung or Xiaomi) have a built-in spam detection function:

  • On Samsung: Phone → ⋮ → Settings → Blocking numbers → Enable "Spam protection".
  • On Xiaomi: Security → Blocking → Spam calls.

You can also use services operators:

  • 📱 MTS: "Antispam" service (connected via USSD code *111*789#).
  • 📱 Beeline: "Spam protection" (free for the "Everything" and "Unlimited" tariffs).
  • 📱 MegaFon: "Spam filter" (connected in your personal account).

These methods are less accurate than specialized applications, but do not require installation of third-party software and do not collect your contacts.

FAQ: Frequently asked questions about applications for identifying numbers

Is it possible to find out the full name of the owner of the number using these applications?

In Russia - noApplications. show only the category of the number (for example, “Bank”, “Fraudster”) or the name assigned by other users. To obtain your full name, you need to contact the police with an official request.

Which application is the safest for privacy?

WhoCalls and CallApp do not download your phone book to the server (unlike GetContact or Truecaller). However, even they collect data about your calls for analysis.

Why did the application not identify the number?

Possible reasons:

  • The number is new and has not yet been added to the database.
  • This is a virtual number (SIP or VoIP) that is not tied to operator.
  • The owner of the number uses the "Anti-identifier" service with his operator.
Is it possible to remove your number from the application database?

Yes, but the process depends on the service:

  • Truecaller: fill out the form on the website truecaller.com/unlisting.
  • GetContact: send a request via feedback form.
  • Nomerokosmos: write to support from the application (Settings → Support).

Removal can take up to 7 days.

Do applications pay for adding numbers to the database?

No, this is a myth. Some fraudulent sites offer money for “verifying numbers,” but in reality they either steal data or ask to pay for “registration.” Real applications (like Truecaller) do not pay for replenishment. bases.