CallApp: Caller ID & Block

Review by eFreeware

If unknown numbers land on your phone most days, CallApp is built for that problem. It is a free Android app in the Communication category that identifies incoming callers, blocks spam calls and texts, and can take over as your default messaging app. The developer also bundles an automatic call recorder and support for Wear OS watches, so the pitch is broader than a simple caller ID tool.

The numbers behind it are substantial: more than 100 million installs and a 4.3 average from over 1.8 million ratings. It has been on Google Play since September 2012, which makes it one of the longer-running entries in this category, and it was last updated on October 6, 2026.

What appeals to me here is the combination. Plenty of apps will tell you who is calling; fewer also handle your text messages and record calls without you installing several separate tools. Whether that bundling works for you depends on how much of your phone's communication you are willing to route through one app.

Who gets the most from a caller ID app

The clearest fit is someone whose number is widely circulated and who fields a steady stream of calls from people they do not know: a small business owner, a landlord, a freelancer taking inquiries, or anyone who has had their number passed around. For those people, the value is immediate, because the app is trying to put a name or a spam label on a call before it is answered.

It also suits anyone who wants their texting handled in the same place as their calls. CallApp can be set as the default SMS app, which means incoming messages get the same spam treatment as calls and your conversations get sorted into categories such as personal, favorites and spam.

A third group is people who want recordings of their calls. The automatic call recorder is designed to capture calls without you starting it by hand. That is a specific need rather than a universal one, but it is the kind of thing that is hard to find elsewhere without extra hardware.

I would not frame this as an app for someone who rarely gets unknown calls. If your contacts list covers almost everyone who rings you, the caller ID side has little to do, and the question becomes whether you want the messaging and recording tools on their own merits.

Identifying who is on the line

The core feature is caller ID for unknown numbers. The developer describes a database covering more than seven billion numbers, which is the scale that makes identification possible at all: the app matches an incoming number against that pool and shows you what it knows. There is also a phone number lookup, so you can search a number yourself rather than waiting for it to call you.

Caller trace and phone book abilities round out the identification side, and the newer CallApp+ layer extends identification to calls arriving through WhatsApp, Viber and Telegram. That last part matters more than it used to, since a lot of first contact now happens in messaging apps rather than over the cellular network.

The practical benefit is that you can decide whether to pick up. A labeled call from a delivery driver and an unlabeled call from an unfamiliar area code look very different once the app has had its say, and that is the whole point of installing something like this.

Blocking spam calls and messages

Blocking is the second half of the job. CallApp is designed to stop robocalls, telemarketing and scam calls, with blacklist options that let you block individual numbers or contacts. The spam detector is set up to block unwanted calls and messages automatically, and the developer describes blacklist rules that can target a particular prefix rather than one number at a time.

Message filtering works along the same lines. When CallApp handles your SMS, unknown, spam, scam and telemarketing texts are identified and blocked, and your inbox is organized into personal, favorites and spam categories. For anyone who has watched a legitimate message get buried under promotional texts, that sorting is arguably as useful as the blocking itself.

The obvious trade-off with automatic blocking is that filters make mistakes in both directions. A number you actually want to hear from can end up on the wrong side of a rule, so the blacklist options are worth setting up deliberately rather than leaving everything on default. The developer's framing is that the filter adapts to your needs, which puts the configuration work on you.

Messaging and call recording

Using CallApp as your default SMS app is the part that changes your habits most. You send and receive messages inside it, and the same spam intelligence that labels calls is applied to texts. Messages are then grouped by type, so personal threads, favorites and blocked spam sit in separate places instead of one long list.

The automatic call recorder is the other headline feature. It is designed to record calls without manual input. The stated compatibility is most Android devices, which is a hedge worth reading carefully: recording behavior on Android has historically depended on the device and the version of the system, so I would treat broad compatibility as a goal rather than a guarantee.

There is also Wear OS support, so the caller ID, blacklist and recording features are meant to reach smartwatches as well as the phone. For anyone who takes calls from a watch, that integration is a reasonable bonus rather than a reason to install on its own.

What CallApp costs and what comes with it

CallApp is free to download and it contains ads. It also offers in-app purchases, so some features sit behind a payment of some kind.

On privacy, the developer states that data is not sold or shared with third-party applications or organizations.

The cost picture is therefore simple but not empty: no charge to install, ads in the experience, and purchases available. If you are comparing this with a paid caller ID service, the trade is money against advertising and whatever the in-app purchases turn out to cover.

How it compares with the alternatives

The nearest alternatives are the caller ID and spam blocking tools built into many Android phones and carrier accounts. Those tend to be lighter and require no extra app, but they generally stop at labeling and blocking; they do not replace your messaging app or record calls. CallApp's argument is that it consolidates several jobs into one place.

A second comparison is a dedicated call recording app. If recording is the only thing you need, a single-purpose tool is a simpler proposition than an app that also wants to handle your calls and texts. The reverse is also true: if you want identification, blocking, messaging and recording together, assembling that from separate apps means more moving parts.

The third option is simply doing nothing and relying on your own judgment about unfamiliar numbers. That costs nothing and requires no setup, and for someone who gets only the occasional spam call it is a defensible choice. CallApp makes sense when the volume of unwanted contact has become a regular annoyance rather than a rare one.

A worthwhile install if unknown numbers are a daily nuisance

CallApp is a mature, widely installed app that does four related things: it identifies callers, blocks spam calls and messages, can act as your default SMS app, and records calls automatically. The combination is the reason to choose it over a narrower tool, and the scale of its number database is what makes the identification side plausible.

The caveats are the ones that come with the category. It is free but ad-supported with in-app purchases, so the experience is not uncluttered. Automatic blocking needs some tuning to avoid catching calls you wanted. And call recording on Android is best approached with the understanding that device support varies.

If you run a business from your phone, rent out property, or simply receive a stream of calls from numbers you do not recognize, this is a sensible thing to install and configure properly. If unknown calls are rare for you, the case is weaker, and the messaging and recording features would have to carry the decision on their own.

What's new

* Our new SMS feature is finally here, and we're excited to make communication with all your contacts easier than ever. With our advanced feature, you not only can send and receive messages easily, but also be sure you're safe from spam messages. * New Caller ID for WhatsApp, Viber and Telegram calls * Bug fixes We regularly update our app so you can have the best communication experience!