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In today’s mobile‑driven world, building a successful communication app isn’t just about writing code: it involves strategy, infrastructure, user trust, security, and long‑term maintenance. When someone asks “How much does it cost to build an app like Arattai?”, what they’re really asking is: What is the full investment required to take a messaging‑platform idea to a reliable, scalable, trusted product?
In this article, I will walk you—step‑by‑step—through:
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Let’s begin by understanding what Arattai is, and why modelling your app after it is a meaningful benchmark.
Arattai is a messaging application launched by Zoho Corporation (Chennai‑based, India) which offers instant text, voice notes, audio & video calls, file/media sharing, stories, channels and multi‑device support.
Some key facts:
If you’re asking about cost to build an app like Arattai, there are several reasons it makes for a good benchmark:
Hence, by using “app like Arattai” as your target, you set yourself a meaningful, realistic bar: not minimal (just chat) and not absurd (global social network with billions of users). You aim for a robust messenger with modern features and trustworthy architecture.
Before diving into specific features and costs, it’s crucial to understand the key cost‑drivers in messaging/VoIP app development. These are the levers that will dictate your budget, so you can plan wisely.
The number of platforms you target affects cost significantly:
For example, Arattai supports multiple devices per account, so your budget must account for more than “single‐device mobile only”.
Basic features (text chat, voice notes, file sharing) are simpler; advanced features (video calls, group calls, channels, stories, multi‑device sync, encryption) take more effort. Complexity multiplies when real‑time signalling, media encoding/decoding, background services, push notifications, offline support are involved.
Messaging apps must handle many users simultaneously, maintain real‑time presence, deliver messages reliably, sync across devices, store media and conversations. Costs increase with user‑base size: you’ll need robust backend servers, load‐balancers, caching services, databases with replication, Content Delivery Network (CDN) for media, storage, and monitoring & analytics infrastructure.
Privacy and security are key differentiators (and for trust). End‑to‑end encryption, secure transport, safe storage, data‐centre localisation, GDPR/India‑privacy compliance, application hardening, penetration testing — these all add cost. Given Arattai’s claimed focus on “secure, Indian‑made” messaging, you’d want to budget for similar.
Good user experience drives retention (especially in messaging). Clean, intuitive UI across platforms, animations, offline states, responsive desktops, smooth transitions — these design aspects cost time.
After launch, you’ll need ongoing maintenance: bug fixes, OS updates, feature enhancements, server monitoring, scaling infrastructure, customer support. Messaging apps often require 24/7 ops because downtime or delayed messages kill credibility.
Various services will be required: push‑notifications (Firebase, APNs), analytics, crash reporting, CDN for media, possibly STUN/TURN servers for VoIP, media‑transcoding, encryption libraries, perhaps chat‑bots or channel analytics. Some of these are free or cheap; some cost a lot at scale.
Time matters: longer development cycles add cost (salaries + overhead). Also, where your team is located (India vs US vs Eastern Europe) affects hourly rates. Since you are in India, you may leverage lower development rates than global average.
Your app’s business model (free, freemium, ads, subscriptions) influences infrastructure choices and thus cost. If you plan to monetize through ads, you might need ad‑engines, tracking, more analytics. If premium, maybe fewer users but more polish.
Now let’s lay out the feature‑scope for a messaging app similar to Arattai. We will categorise features into core, advanced, premium/monetisation, and each will be a driver of cost.
These are the must‑haves for a functioning chat app.
These add significant cost and complexity:
These may not be strictly necessary but may form part of your business model and so influence cost:
To give you a sense of when cost is incurred, here is a typical phase breakdown:
Total typical development time for an app like Arattai: ~6‑9 months from start to initial launch of major features (mobile only). If you include desktop/web, full enterprise features, it could extend to 9‑12 months or more.
Now we move into cost estimation. Because actual cost depends heavily on region, team size, complexity, scale, and ongoing operations, I’ll provide ranges and what drives the variation, so you can calibrate for your context.
Low‑complexity version (mobile only, iOS + Android, limited features: chat + voice call + media sharing):
These are approximate ballparks; your actual costs may vary based on team location, hourly rates, feature choices, and scale.
Post‑launch costs are often overlooked but are critical for messenger apps:
A rough ballpark might be: Monthly operational cost could range from ~₹5‑10 lakhs in early phase (for a few thousand users) to ₹30+ lakhs/month as users scale into millions. Over the course of a year that adds up significantly.
Building an app like Arattai is more than just implementing a chat interface. Every feature you add introduces complexity, development time, and infrastructure requirements. Understanding how each element contributes to the overall cost is essential for budgeting accurately.
At the heart of Arattai is instant messaging. Simple text messaging may seem straightforward, but in reality, it demands careful attention to real-time delivery, message synchronization across devices, offline message queuing, and data persistence. For a mobile application, text messages require a backend capable of handling thousands or millions of concurrent users while ensuring delivery reliability.
When you add multimedia sharing, the complexity rises sharply. Photos, videos, and documents need secure upload, storage, compression, and delivery. Each file type must be handled efficiently to ensure that users experience minimal delays. Media content often requires a Content Delivery Network (CDN) to deliver files quickly across geographic regions, which adds operational cost. Storage infrastructure also scales with user growth, impacting recurring costs significantly.
For the development of these messaging and media features, an experienced team may take several weeks to design, implement, and test a robust system. In India, depending on the size and experience of the development team, building a reliable text and media messaging module can cost anywhere between ₹10 to ₹25 lakhs, with additional recurring costs for servers, storage, and CDN services.
One of the key differentiators of Arattai is its support for voice and video calls. Implementing real-time communication is inherently more challenging than text messaging. Calls rely on low-latency, high-bandwidth connections, often facilitated by technologies like WebRTC, which handles media streaming and peer-to-peer communication.
The development process involves creating call signaling, managing audio and video codecs, ensuring cross-platform compatibility, and integrating with NAT traversal techniques using STUN/TURN servers to handle network firewalls and restricted networks. Beyond development, operating costs include running TURN servers, which can be significant as user concurrency rises.
In terms of cost, building a basic one-to-one VoIP call feature can add another ₹15 to ₹30 lakhs to development budgets in India. Group video calling, especially at scale with 50 or more participants, increases complexity and costs further due to the need for advanced server infrastructure to handle video mixing, encoding, and streaming.
Modern messaging apps are more than just one-to-one communication. Group chats, public channels, and story features increase user engagement but also the technical demands of the platform. Group chats require additional backend logic for member management, permissions, real-time message delivery, and notifications.
Channels and stories introduce a more content-centric approach. Stories, often ephemeral by design, require temporary storage and real-time rendering across multiple devices. Channels may support broadcasting messages to thousands of users simultaneously, which necessitates scalable message delivery systems and analytics for engagement tracking.
These features also increase design and testing efforts. The UI needs to handle large groups, display stories seamlessly, and support interactions like reactions or comments. Depending on the scale and quality of implementation, adding group chats, channels, and stories can cost between ₹20 to ₹40 lakhs in development, with ongoing infrastructure costs for storage, delivery, and analytics.
One of Arattai’s unique selling points is its multi-device support. Users can log in on multiple devices and have their messages synchronized across all platforms. Achieving this requires real-time database updates, conflict resolution for message edits or deletions, and efficient data replication.
Security is equally critical. Messaging apps must protect user data with encryption, secure storage, and safe transport protocols. While Arattai currently encrypts voice and video calls, full end-to-end encryption for text and media messages significantly increases complexity and testing requirements.
Implementing multi-device sync and strong security measures can add ₹15 to ₹35 lakhs to the development budget. Additionally, ongoing maintenance for security updates, encryption key management, and monitoring adds to operational costs.
The choice of technology stack greatly influences both the initial development and ongoing expenses. Mobile apps can be built natively for iOS and Android or using cross-platform frameworks like Flutter or React Native. Native apps offer better performance, particularly for media-heavy features like video calls, but require separate development teams for each platform. Cross-platform frameworks reduce development time but may introduce limitations in performance or platform-specific customizations.
Backend architecture decisions are equally important. Node.js, Golang, and Python are commonly used for messaging backends, often paired with real-time communication protocols like WebSockets. Databases must support high concurrency and fast read/write operations; choices like MongoDB, PostgreSQL, or Cassandra can be made depending on scale requirements. Cloud platforms such as AWS, Azure, or Google Cloud offer scalable infrastructure, but costs rise with storage, compute, and CDN usage.
The selection of third-party services also affects cost. Push notification services, analytics tools, and media transcoding libraries can accelerate development but introduce subscription fees. For VoIP, using third-party SDKs versus building a custom solution has significant cost trade-offs; SDKs reduce development time but incur licensing fees, while custom solutions require more initial investment but avoid ongoing licensing costs.
The expertise of your development team directly affects both quality and timeline. A typical team for an Arattai-like app includes UI/UX designers, mobile developers for iOS and Android, backend engineers, QA testers, and DevOps specialists. In India, hourly rates range from ₹500 to ₹2,500 depending on experience. Hiring a small, mid-level team can be cost-effective but may extend timelines, while a senior, experienced team accelerates development but increases upfront costs.
In total, for a feature-rich, secure, multi-device messaging app, the development budget in India can realistically range from ₹70 lakhs to ₹1.5 crore. If the project includes desktop clients, enterprise features, or global-scale operations, costs can exceed ₹2 crore.
Once your Arattai-like messaging app is developed and launched, the journey shifts from building to sustaining and growing the platform. Understanding monetization strategies, operational expenses, and scalability requirements is essential to ensure that your investment delivers long-term value and maintains user trust.
Monetizing a messaging app is a delicate balance between generating revenue and maintaining a seamless user experience. Unlike gaming or entertainment apps, messaging platforms are highly sensitive to intrusive advertising or paywalls. Successful apps like WhatsApp, Telegram, and Arattai demonstrate that monetization is most effective when it aligns naturally with user needs.
The first approach is subscription-based models, where premium features are offered to paying users. For example, your app could provide advanced functionalities such as unlimited media storage, high-definition video calling, large group capacities, or exclusive channels. Subscriptions can be monthly or yearly, offering predictable revenue streams. The initial development cost for integrating a subscription module is relatively low, but it requires ongoing maintenance to manage billing, security, and compliance with App Store and Google Play guidelines.
Freemium models are another popular option. Here, the basic chat functionality is free, but additional features—like custom themes, animated stickers, or advanced analytics for channel owners—require in-app purchases. This strategy encourages mass adoption while still monetizing power users. Implementing in-app purchases adds a moderate development cost, mainly focused on payment gateway integration, inventory management, and secure transaction handling.
Finally, advertising can generate revenue, though it must be done carefully. Non-intrusive banner ads or optional video ads in channels can monetize free users without compromising the core messaging experience. Advanced advertising strategies can include targeted promotions based on user engagement metrics, but this requires analytics infrastructure, data collection, and compliance with privacy regulations, which adds both development and operational costs.
After launching your app, operational expenses become the largest ongoing investment. Messaging apps require continuous backend support to maintain service availability, deliver messages in real-time, and ensure secure data handling. Even a small downtime or lag can severely impact user trust and retention.
Servers and cloud infrastructure form the backbone of a messaging platform. Depending on the number of active users, server requirements can vary significantly. Initially, a cloud-hosted solution with auto-scaling capabilities can manage a few thousand users efficiently. As user numbers increase into the hundreds of thousands or millions, additional servers, database replication, caching mechanisms, and CDNs become necessary to maintain low-latency communication and fast media delivery.
The cost of operational infrastructure depends heavily on usage patterns and media storage. For a platform supporting voice and video calls, high-definition media requires substantial bandwidth, which increases cloud expenses. Similarly, ephemeral content such as stories and temporary channels requires both storage and timely deletion protocols. Operational costs for a medium-scale app can range from ₹5 to ₹15 lakhs per month in India, and may grow exponentially as user adoption scales.
Maintenance costs also include software updates and bug fixes. Mobile operating systems release regular updates, which can introduce compatibility issues. QA and development teams must continually test and patch the application to ensure a seamless experience across all devices. Security maintenance is another critical area; encryption protocols, data storage practices, and compliance with regulations must be continuously reviewed and updated.
Customer support is often overlooked but is essential for user satisfaction. Messaging apps require responsive support channels for issues such as account recovery, media delivery problems, and bug reporting. Employing a small support team initially, with plans to scale as the user base grows, is a practical approach.
Scaling a messaging platform like Arattai is not merely about adding more servers; it is a combination of smart architecture, optimized code, and strategic resource allocation. Horizontal scaling is commonly used for messaging applications, where multiple servers handle traffic in parallel, supported by load balancers to distribute requests efficiently. Database sharding and replication ensure that data is accessible without bottlenecks, while caching mechanisms like Redis or Memcached reduce latency for frequently accessed content.
Real-time communication adds another layer of complexity. For voice and video calls, WebRTC or similar protocols rely on media servers that manage multiple concurrent streams. As the number of simultaneous calls increases, additional media servers and TURN/STUN servers must be deployed to maintain quality and prevent call drops. These servers consume significant bandwidth, which adds to recurring operational costs.
Monitoring and analytics are also crucial for scaling. Performance metrics, server health, user engagement, and error logs help identify potential bottlenecks before they impact user experience. Predictive scaling, where resources are adjusted based on usage patterns, can optimize operational costs while ensuring performance stability.
As your platform grows, ensuring robust security and regulatory compliance becomes a significant cost driver. End-to-end encryption is no longer optional; it is expected by users and often required by privacy regulations. Secure storage of media files, encrypted databases, secure authentication, and protection against hacking attempts are fundamental components of a trustworthy messaging app.
Compliance with data privacy laws, both in India and globally, adds additional operational considerations. Laws such as India’s Personal Data Protection Act or GDPR in Europe mandate clear data handling policies, user consent mechanisms, and the ability to delete user data upon request. Implementing these protocols requires careful planning and ongoing audits, which contribute to both development and operational costs.
While building and maintaining an Arattai-like app is inherently expensive, several strategies can help optimize costs. Using cross-platform frameworks like Flutter or React Native can reduce development time while maintaining a near-native experience. Leveraging cloud services with auto-scaling reduces upfront server investment and ensures resources are used efficiently.
Choosing third-party SDKs for features like VoIP or push notifications can accelerate development, though licensing fees must be weighed against development costs. Incremental feature rollout—starting with core messaging and adding advanced features gradually—can spread costs over time while allowing early monetization and user feedback.
Partnering with experienced development agencies can also mitigate risk. For instance, Abbacus Technologies offers expertise in building scalable, feature-rich communication apps. Their teams bring proven processes for UI/UX design, backend development, and security, which can help avoid costly mistakes and accelerate time-to-market.
Building an app like Arattai is a substantial undertaking that combines technical expertise, strategic planning, and user-focused design. In this final section, we consolidate cost estimates, provide a practical roadmap, and summarize best practices for launching a successful messaging platform.
The total investment for an Arattai-like app depends on the scope, complexity, and scale of your project. Based on Indian development market rates and standard operational expenses, the costs can be divided into the following categories:
In global markets, or when hiring teams in Western countries, these costs can increase by 2–3 times due to higher hourly rates and infrastructure expenses.
A structured approach helps manage complexity, timelines, and budget. Here’s a practical roadmap:
Phase 1 – Planning and Research:
Understand your target market, define core features, study competitors, and draft a technical feasibility report. Early attention to architecture and scalability will save costs during later stages.
Phase 2 – UI/UX Design:
Create wireframes and interactive prototypes. A clean, intuitive design encourages adoption and retention. Multi-platform design should be considered from the start to avoid later rework.
Phase 3 – Core Development:
Implement messaging, media sharing, voice and video calls, and authentication. Focus on delivering a stable MVP before adding advanced features.
Phase 4 – Advanced Features:
Introduce group chats, stories, channels, multi-device support, and enhanced security. This phase often overlaps with testing to ensure smooth integration and performance.
Phase 5 – Testing and Quality Assurance:
Conduct functional, security, and load testing. Messaging apps must perform reliably under high concurrency; rigorous testing prevents early failures.
Phase 6 – Launch and Marketing:
Deploy on app stores, initiate marketing campaigns, and monitor adoption metrics. Early feedback can guide iterative improvements.
Phase 7 – Post-launch Maintenance and Scaling:
Continuously monitor infrastructure, update features, fix bugs, ensure compliance, and scale servers as user base grows. Long-term user trust depends on uninterrupted performance and privacy assurance.
Building an app like Arattai is an ambitious but achievable goal. The project requires careful planning, a skilled development team, a scalable infrastructure, and ongoing operational management. Development costs in India for a feature-rich messaging app can range from ₹70 lakhs to ₹1.5 crore, while recurring operational costs vary based on user base and infrastructure scale.
A successful Arattai-like app combines robust messaging functionality, secure voice and video calls, engaging group features, and thoughtful monetization strategies. By prioritizing user trust, leveraging efficient technology stacks, and following a structured roadmap, your app can achieve both adoption and long-term sustainability.
If you are seeking expert guidance and reliable development services for building a scalable, secure, and feature-rich messaging app, Abbacus Technologies offers end-to-end solutions. Their experience in communication platforms ensures high-quality implementation and faster time-to-market.
With a clear understanding of costs, features, and operational requirements, aspiring app creators can confidently plan and execute their vision, turning an idea into a competitive messaging platform that users trust and enjoy.
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