CallApp: Caller ID, Call Blocker & Call Recorder - Interview with the developer of a fantastic app

Did you have any prior development or coding experience?

Yes, of course, mostly server-side experience and web development.

What was the most challenging aspect of developing mobile app?

The most challenging aspect of developing CallApp would surely be making the app work on different Android OS and phone vendors and also ensuring that it runs perfectly on all these variations too. CallApp has many features and abilities which require close interaction with Android APIs. Different OS versions and phones from different vendors do not always expose the same APIs, return the same results or allow the same operations to be executed.

Alon has been leading the Research & Development team at CallApp in Tel Aviv for over 6 years, ensuring that every feature functions nothing short of perfection.

Name a few of your favorite apps and reason you love them.

While CallApp is unsurprisingly my favorite app, I also really appreciate Spotify which helps me focus while working on developing CallApp. What I love about Spotify is that the app is simple, and the value is clear. Similar to CallApp, the app also creates a machine based customized experience without the user having to put in any work.

I’m also a fan of Waze, another great app with benefits similar to those of CallApp - offering an essential service with the goal of saving its users’ precious time with an element of community contribution.

How long have you been working on this app?

6.5 years and counting!

What need of the user did you have in mind when developing this app?

CallApp answers to the basic need of knowing who’s calling before answering. This simple, but crucial piece of information can have a life changing effect if one ignores or picks up the wrong call.

In what way do you think your app is better than similar apps on the market? Please describe in detail what innovation you think you bring and what you are proud of in your app.

CallApp is the world leader at identifying numbers, covering more numbers than any other Caller ID app. CallApp also provides the best call recording capabilities, allowing phone calls to be recorded and played on nearly any device. The app is also unique in that it includes an AI and machine learning layer that only continues to improve over time. This ensures the most advanced insights, as well as the right actions brought to the user’s attention at the right time.

What are your future plans and expected features of the coming new versions of this app?

We plan to improve and redesign the calling experience provided by CallApp, allowing for an even more customized experience. For the future, we also plan to expand our phone coverage even further, as well as improve our AI and machine learning capabilities taking our technology to the next level.

Assuming new users of your app are reading this page. What do you want to ask them to do (contact you about X, Share the app, etc.)?

Send us your feedback, tell us what you loved, what you feel could use some improvement, and maybe even tell us how to do so too! Explore the app as much as possible because CallApp is packed with invaluable and unique features that will without a doubt enhance your communication experience.

CallApp: Caller ID, Call Blocker & Call Recorder

About App:

Known as the leading Caller ID & Call Blocker App across the globe by Users and Top-Rated Tech Magazines. CallApp is a free Caller ID app trusted by 100 Million users to block spam calls & know the true caller ID.

★ Caller ID – Know who’s calling you using our free caller ID & spam blocker.

★ Call Blocker – Block calls that are spam calls, robocalls, or unknown numbers from sales & telemarketers. Find out who called you and block unwanted caller IDs.

★ Video Ringtones – Customize your incoming caller screen with videos. Display videos as a ringtone.

★ Analytics – The first app that offers analytics on your phone calls. Analyze your call durations, incoming vs outgoing calls, who you contact most, the amount of spam you receive, and much more!

★ CallApp+ – Identify calls from Messaging Apps (WhatsApp) & SMS. It provides all of CallApp’s phone number identification in one place.

★ Dialer & Contacts – CallApp is a dialer & contacts app that comes with an upgraded contact book.

★ Automatic Call Recorder – Recording calls is easy! Record incoming & outgoing phone calls! Call recordings can be used on any android phone.

For those wanting more privacy with your phone calls, we now offer incognito calling! Whether it's for business or personal use, incognito calls give you privacy for all your calls.

With CallApp you can block spam calls, phone numbers, and contacts from your phone book or dialer. Blacklist a phone number & never get robocalls from unknown callers again! Use the phone number search to blacklist the spam number you wish to block.

We do not sell, share data with any third-party application and/or organization. We also do not track your location.

Upgrade CallApp and enjoy premium features:
- No ads
- WhatsApp Caller ID
- Video Ringtones
- Store items (themes, skins, etc.)

Categories: Communication

Date: July 18, 2021

Developer: Alon Zimmerman - VP of R&D at CallApp

About developer: Alon has been leading the Research & Development team at CallApp in Tel ... Read more



App URL in iTunes


Promoty – influencer app

Promoty – influencer app

September 28, 2023

The most effective brand collaborations happen when influencers partner with the brand ...

Upgrade your messages experience with our innovative SMS messaging app! Stay organized a ...

Why US Virtual Number?
★ Free incoming calls & sms
★ Free voicemai ...

OBD Fusion (formerly TouchScan) is an app that allows you to read OBD2 vehicle dat ...


Every day we publish one great app and help 750,000 users discover new apps to add to their mobile device. Click here to add your app and let users discover it for free.

Social Links