Want to Create an App like Viber or WhatsApp?

Want to create a custom messaging app like Viber or WhatsApp with advanced features? We design and develop a native messaging app for Android and iOS platforms. Want to get your free quote?

Create an App like Viber or WhatsApp

Top App Development Company,
Accredited By

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Recognized as Top
App Developers by

JSS 99%

Earned 99% of job success & “Top-Rated Plus” Badge on Upwork.

star-performancestar-performancestar-performancestar-performancestar-performance 5.0

Featured in the list of Top 10 Mobile App Development Companies.

star-performancestar-performancestar-performancestar-performancestar-performance 4.9

Ranked as “Top App Development Company” by GoodFirms.

Custom Messaging Application Development Company

If you have an idea to create your own instant messaging app like Viber, Space-O can help you. We have experience in developing custom messaging apps like Viber and WhatsApp.

From idea validation to publishing it on the App Store or Play Store, Space-O has developed over 4400 mobile application solutions. Developing a messaging app like Viber and WhatsApp is one of our core expertise. Want to validate your app idea from our experienced app consultant? Let’s talk.

Talk to our experts now

Antonio Quero-Diaz

Antonio Quero-Diaz Singapore

I hired Space-O to help build my fitness and food log mobile apps. Professional, knowledgeable, and skilled, Space-O delivered a detailed mock app and a fully featured product that launched successfully. The team communicated well and readily grasped concept and intent. Their communication and ability to understand requests were top-notch. I was most impressed with their professionalism, their extensive end-to-end knowledge, and their design capabilities.

Want to Create a Custom Messaging App?

We have experience in developing custom Messaging apps with advanced features. Let’s get in touch.

Explore Our Recent Portfolio


Glovoandroid app platform

Covered by Techcrunch, Glovo is the most downloaded on-demand delivery app in Spain. Developed by our mobile application developer team, this app has received total funding of $1.2B.

Weather Radar Live

Weather Radar Live

Weather Radar Live app has been downloaded by more than 150K users within a year. With 2.1K ratings and an average rating of 4.4 stars, this app is well-known for offering the most accurate weather alerts 24/7 for any location.


TOR Appandroid app platform

Designed and developed by our Android developers, the TOR app is downloaded by 100K+ users within a year of its launch. TOR has received more than 8500+ ratings and an average rating of 4.3 stars, provides a secure VPN and internet speed test.


One8android app platform

One8 is an enterprise fleet management solution developed by our mobile and web app developers. It allows the users to request deliveries and get optimized routes for every trip. The drivers can manage their trips on the app as well.

Aesthetic Editor

Aesthetic Editor

Downloaded by over 3 million users and featured in the top 15 apps, Aesthetic Editor will help you customize your home screen with over 10K free icons and widgets.

Bada Property Exchange App

Bada Property Exchange App

The Bada Property Exchange is a property management app, allows Indians to exchange their properties against the home, office, or land.

Our Developed Apps Have Been Featured In

How Much Does an App Like Viber Cost?

We offer affordable app development and customization. There are a lot of factors that affect the pricing of the app, for example, customization, the platform on which the app is to be built, etc. On average, the Viber app for iPhone would cost you around “954 hours” of development and the Android App would cost you around “1081 hours” of development.

DeliverablesDescriptionEstimated Man Hours 
DevelopmentGraphics DesignQC/TestingProject ManagementTOTAL
(I) iOS Application1. Business Analysis & Communication2033228
2. Base Code & Architecture101.51.5114
3. Features:
3.1. Registration121.
3.2. Facebook Integration81.21.20.811.2
3.3. Chat:
3.3.1. Base304.54.5342
3.3.2. Groups182.72.71.825.2
3.3.3. Stickers2033228
3.3.4. Video & Image Messages182.72.71.825.2
3.3.5. Location81.21.20.811.2
3.3.6. Drawings304.54.5342
3.3.7. Voice Messages2033228
3.3.8. Animations6099684
3.3.8. Discover (Blogs)304.54.5342
3.4. Contacts & Profiles263.93.92.636.4
3.5. Voice Calls4066456
3.6. More:
3.6.1. Settings2033228
3.6.2. Sticker Market182.72.71.825.2
3.6.3. Add New Contact + QR codes2033228
3.6.4. About40.
3.6.5. Tell a Friend121.
3.6.6. Viber Out162.42.41.622.4
3.7. Video Calls558.258.255.577
4. Push Notifications81.21.20.811.2
5. In-App Purchase81.21.20.811.2
6. Base Server Interaction142.12.11.419.6
7. Graphics Design Integration304.54.5342
(II) Android ApplicationsAndroid considered as 120% of iOS development932.4
(III) С++ Server Socket Module1. Business Analysis & Communication162.41.620
2. Server Architecture & Protocol Design162.41.620
3. Base Code182.71.822.5
4. Connection Management81.20.810
5. Protocol Packet Parser81.20.810
6. Base Database Integration121.81.215
7. Client Login, Auth/Registation81.20.810
8. Client Number Verification81.20.810
9. Contact List Generation81.20.810
10. Broadcast Group60.90.67.5
11. Operations with Contact List and Broadcast Groups121.81.215
12. Message Processing81.20.810
13. Messaging Media Data121.81.215
14. User Profile Operations121.81.215
15. Undelivered Messages121.81.215
16. Push notifications162.41.620
17. Phone number verification121.81.215
18. Secure Connections60.90.67.5
29. Voice Connection Manager121.81.215
20. Simple Chat-bot for Testing101.5112.5
21. Bot Stress/Logic Testing121.81.215
22. Deployment & Testing on Dev & Live Server243.62.430

Let’s get in touch with us. We will be happy to discuss with you on your app idea once we have the basic information. If you want to compete with Viber like application, you need to integrate unique, the most-demanding features in your application. That’s the only way you can compete.

Why Choose Space-O Technologies?

Success Score on UpWork

Success Score on Upwork

Apps Live on App Stores

Apps Live on App Stores

Jobs Completed on Upwork

Jobs Completed on Upwork

Unique Feature Implemented

Unique Feature Implemented

Small and Large Innovation

Small and Large Innovation

Mobile App Developers

Mobile App Developers

App Downloads

App Downloads

Years of Experience

Years of Experience

Clients Worldwide

Clients Worldwide

Make Your Own Messaging App

Have a Messaging app idea? Want to convert it into a reality? Get your free quote now. Contact us now.

Technologies We Use



Programming Language

Java programming language


kotlin for android development



integrated development environment


android studio

Android Studio

Web Development Language












MySQL Database


Hosting Server

ubuntu hosting server

Ubuntu 16.04

Mobile App Design

Adobe XD

Adobe XD



Wireframe Design Tool

wireframe designing tool

Adobe XD

HTML – CSS Conversion Tool

Visual Studio

Visual Studio

Our Valuable Clients

Frequently Asked Questions

How long will it take to get social messaging app like Viber?

Typically the exact ETA depends upon the App’s specifications and other variables. On getting detailed requirement to create the app, it will approximately take about 4-5 weeks.

What are the possible specifications that Viber could offer?

Once you’re with the Viber application, it will automatically import all your contacts in the middle contacts section. This helps in making the calls quickly or send messages using viber or as per your normal data plan which in turn creates a one-stop-shop for voice calling and messaging.

It will automatically respond to a viber message as an incoming SMS message which will save the trouble of jumping between the apps and help keep your texting under control.

The app allows for group text chat, with many features like image and media sharing, emoticons, push notification,etc.

It uses your phone number to identify you on the network and therefore does not require logging in and out each time

Being a customer how can I make big cash?

With our expertise and hands-on experience in app development, you surely can make good money by creating the following:

  • Advertisement – Ads need not be an annoyance anymore if they are leveraged sensibly. Your anonymous confession apps like Viber can be punched with the same idea.
  • Gizmos rewards/ Price/ Points System
  • In-App Purchases – There are 100s of ways to utilize In App purchase for making money
Why Space-O? Why not others?

Depending upon the purpose that is selected, our team of developers at Space-O certifies that the developed code is properly tested and confirms as per the requirements. Along with this our marketing team will research and figure out best possible ways to promote the App. However, if you intend to just make an app like Viber for the purpose of Cloning, it might not work. We don’t clone the app. Viber is just for the example, which means we can develop an app like Viber with all its unique features. We don’t have any ready-made source code, or script to develop it. Figure out a niche around how Viber like apps works and you can leverage our team.

What’s the guarantee of your words?

Our testimonial speaks by itself, kindly have a glance through our testimonial page. Space-O believes in “Trust” and values the clients time & money. We would be more than happy to serve you if you could take up on any pilot project and experience yourself if the requirements have been accomplished to the mark.

Appreciation From Clients

Riccardo Petrachi

United Kingdom

We searched online for app developers that had an extensive experience in mobile app development as well as a strong presence in the market. We chose Space-O specifically because of the up-close experience we had with another app they had developed and we wanted to achieve the same high level of standards, quality, and satisfaction. We were looking for brilliant experts and we found them.


Douglas Laver


The Space-O team were great to work with. Every part of the process went as per the agreed schedule, and the finished prototype met, and in most cases, exceeded my expectations. While Space-O wasn’t the most price competitive of the quotes I received, the quality of their work, professionalism, and product, was well worth the additional cost. Highly recommend, and will continue to use their services for future projects.


Ashton Asherian


Space-O Technologies showed genuine interest in the project. The efficient team delivered quality results at a cost-effective price. We wanted to develop a minimum viable product that would be ready for scalability. It was a great experience working with them. We are so happy that we had the chance to meet Space-O. We love their work. Their project management and structure were amazing. The team loved what they were doing. There was passion behind every single piece of work.