List of the Top 13 Voice Calling API & SDK Apps for iPad in 2025

Introducing a video calling API designed for applications. Sendbird provides voice and video APIs engineered for extensive scalability, enabling seamless integration of high-quality calls into your mobile and web applications.

Leverage the programming language you already enjoy to swiftly prototype concepts, create communication applications that are ready for production, and deploy serverless solutions all within a single API-driven platform. Twilio offers a comprehensive, fully-customizable platform featuring versatile APIs for every communication channel, advanced built-in intelligence, and a robust global infrastructure designed to scale alongside your needs. Seamlessly integrate powerful APIs to initiate the development of solutions for SMS, WhatsApp, voice, video, and email communications. Explore extensive documentation and software development kits (SDKs) available in a variety of programming languages such as Ruby, Python, PHP, Node.js, Java, and C#, or kick off your initial project using our open-source code templates that facilitate the rapid creation of production-level communication applications. Additionally, you can tap into insights and support from a thriving community of over 9 million developers, offering valuable guidance and inspiration for your upcoming projects. So don’t hesitate—sign up today and embark on your development journey.

ClickSend provides a comprehensive suite of communication tools including SMS, MMS, Voice, Online Mail, Email, and Fax specifically designed for businesses. Our user-friendly messaging solutions are not only easy to utilize but also feature automation and integration capabilities, making them the choice of many reputable brands, organizations, and developers worldwide. Accessible to everyone, ClickSend can be used through our intuitive Dashboard, mobile application, versatile API, or through over 900 integrations available. Additionally, we offer round-the-clock support and ensure rapid delivery through a secure and dependable platform. With services ranging from SMS marketing and notifications to bulk mail deliveries conducted right from your browser, over 90,000 businesses globally rely on us for their communication needs. Our commitment to a 100% uptime guarantee and ultra-fast direct routes ensures that messaging remains consistent and reliable across all channels. From small enterprises to large corporations, ClickSend facilitates billions of messages across the globe through its extensive network of 232+ direct carrier connections. Furthermore, our pay-as-you-go pricing model allows businesses of any size to effectively manage their communication expenses. This is why ClickSend is the ultimate solution for business communications, streamlining processes and enhancing connectivity.

MirrorFly serves as a tailored CPaaS solution, enabling businesses and enterprises to engage in real-time communications like instant messaging, voice calling, and video conferencing through its advanced Chat APIs and SDKs. No matter the specific requirements, technology stack, or devices used, MirrorFly empowers global brands to create their own chat platforms with extensive customization options and no restrictions. Among the numerous advantages offered by MirrorFly’s CPaaS are: ✅ Self-hosting capabilities for added control ✅ Limitless customization options to suit unique needs ✅ Complete ownership of data ensuring privacy ✅ An extensive array of over 1000 features ✅ Tailored security measures including Gmail, Phone, and Biometric options ✅ The ability to upload large files exceeding 3 GB ✅ Support for multi-tenant servers ✅ Scalability to accommodate over 1 billion concurrent users ✅ Complimentary migration and integration services ✅ The option to hire a dedicated team specifically for your project With these features, businesses can enhance their communication strategies effectively and efficiently.

Explore how the Telnyx API serves as an accessible tool for developers, capable of revolutionizing your communication strategies. As a versatile communication platform, Telnyx can be tailored to suit your unique requirements. Our infrastructure has been meticulously designed for optimal real-time communication performance. We offer high-quality voice calls, messaging, and data services that span the globe. With our SMS API, crafting dependable messaging solutions becomes a straightforward process. Implementing two-factor authentication through SMS or voice codes enhances your data security significantly. Setting up your VoIP solution is a hassle-free experience that can be accomplished in just minutes. Benefit from carrier-grade voice quality and flexible SIP trunking options. Additionally, our cloud-agnostic design ensures that you remain safeguarded in the face of any network disruptions. Telnyx empowers you to deploy communication solutions precisely as per your requirements while maintaining reliability and performance. By choosing Telnyx, you are investing in a future-proof communication strategy that adapts to your evolving needs.

EnableX simplifies the process of incorporating real-time communication capabilities into various applications and workflows. Specifically tailored for Service Providers and Systems Integrators, it offers a powerful, scalable, and secure communications platform that alleviates the burdens of network infrastructure management and complexity. With EnableX's wide array of programmable SDKs and APIs, developers can effortlessly customize and integrate communication features such as voice, video, and SMS into their existing systems and workflows. Furthermore, businesses can engage with customers globally through Virtual Number services, while also taking advantage of advanced functionalities including AI and natural language processing. This flexibility allows for enhanced interaction and connectivity in a rapidly evolving digital landscape.

CometChat serves as a versatile live chat platform that enables seamless interaction and collaboration between users and customers. Built with an API and Chat SDK, it can be installed either on-premises or in the cloud. This solution empowers users to engage in video, text, and voice conversations with their clientele, as well as share images through broadcast videos, enjoy games, and utilize whiteboards for enhanced communication. Among its key features, CometChat boasts WebRTC capabilities, file and screen sharing, real-time translation for different languages, and extensive customization options for layouts, languages, and color schemes. It also offers functionalities such as typing indicators, notifications for last seen status, read receipts, and a wide array of emojis and stickers, while allowing users to easily transition from text to video chatting. In addition to these primary features, CometChat provides several supplementary services, including broadcast messaging, guest login functionality, access to past messages, the ability to block or unblock users, and options for video broadcasting and voice notes. The pricing structure for this platform is determined by the number of monthly active users, and customer support is readily available through both email and phone channels, ensuring users receive assistance when needed.

Authkey.io is a remarkable Enterprise Omni Channel API platform that provides a comprehensive array of communication tools and APIs, meticulously crafted to assist businesses in achieving effective and secure interactions with their customers. The SMS API orchestrates a seamless communication experience through event-based messaging, facilitating Bulk SMS delivery, transactional notifications, one-time passwords (OTP), and call-based authentication methods. With its Voice API, businesses can send OTPs via voice messages, ensuring recipients have immediate access to important information through an alternative channel. The Email API guarantees efficient and timely email delivery for essential tasks like password verification, account creation, OTP sending, and email validation. In today's digital environment, the WhatsApp Business API serves as a vital link that allows businesses to connect directly with a vast audience on WhatsApp, thereby enhancing customer engagement. Additionally, the Two-Factor Authentication (2FA) API plays a crucial role in security by efficiently sending OTPs, verifying user logins, and strengthening the security framework of business applications and CRM systems, ultimately fostering a safer digital landscape for organizations. This multifaceted platform empowers enterprises to optimize their communication strategies while reinforcing user trust and security.

Dyte's Video SDK and APIs adhere to SOC 2, GDPR, and HIPAA standards, ensuring a high level of security and compliance. You can effortlessly integrate scalable, customizable, and secure video calling capabilities into your web or mobile applications using only a few lines of code. The SDK supports various platforms, including Android, iOS, React Native, Angular, and numerous other languages. Boasting an impressive uptime of 99.99%, alongside comprehensive documentation, a user-friendly UI kit, and pre-built plugins, you can tailor the video experience to meet your specific needs in just minutes. This flexibility allows developers to enhance their applications quickly and efficiently, providing users with a seamless communication experience.

Presenting a Real-Time Engagement Platform aimed at promoting authentic human connections. When people can visually and audibly interact, their participation duration rises dramatically. With Agora, you can easily incorporate immersive voice and video functionalities into any application, making it accessible on any device from virtually anywhere. Agora provides a collection of SDKs and essential components that open up numerous real-time engagement possibilities. Our network continuously monitors performance, choosing the best routing path to guarantee sub-second latency through a global network of more than 200 data centers. It is compatible with all major development platforms and is tailored for mobile usage to reduce battery consumption. Engineered to accommodate sudden traffic spikes, it can smoothly scale from a single user to millions, ensuring that your business requirements are met. Developers enjoy the flexibility to create customized experiences utilizing our extensive APIs, adaptable user interfaces, and easy-to-integrate third-party solutions. Opting for Agora means delivering your users high-quality real-time voice and video communications, enhanced by intelligent routing and remarkably low latency for an unparalleled experience. This advanced functionality establishes Agora as a frontrunner in the field of real-time communications, making it an invaluable choice for modern businesses. The platform not only enhances user engagement but also opens up new avenues for innovation and creativity in digital interactions.

Mesibo stands out as a comprehensive platform for real-time communication, allowing for the effortless integration of features such as messaging, group chats, voice calls, and video conferencing within mobile and web applications. In creating the Mesibo APIs, our central aim was to prioritize reliability, performance, and scalability, as we understood that overly intricate APIs could introduce unnecessary complications and higher rates of errors in applications. Instead of adhering to the trend of complex API frameworks, we chose to emphasize simplicity while retaining robust capabilities. This section will explore the detailed workings of Mesibo's real-time APIs. To better understand how these APIs function in practice, it is recommended to examine the source code of one of the sample applications hosted on GitHub, as this will enhance your ability to write cross-platform code seamlessly. Following this, we will provide a detailed overview of the APIs, including their names and parameters, to ensure you have a thorough grasp of their functionalities. Moreover, this knowledge will equip you to effectively implement these APIs within your own projects, thereby maximizing their potential. Understanding the underlying architecture of these APIs will also aid in troubleshooting and optimizing your applications.

Build your personalized messaging platform equipped with chat and video call functionalities in mere minutes by leveraging the QuickBlox chat API and SDK. QuickBlox provides an instant messaging API that effortlessly incorporates chat and calling capabilities into any application, be it for Android, iOS, or web platforms. It includes all the vital features necessary for creating a premium messaging application, offering high-quality one-on-one and group calling experiences supported by WebRTC technology. Moreover, it supplies adaptable data and file storage options that significantly enhance your messaging interactions. You can also seamlessly integrate ongoing business processes with real-time alerts and notifications, as well as share a variety of file formats, such as images, audio, video, and documents. Trusted by over 30,000 developers and organizations worldwide, QuickBlox serves as a HIPAA-compliant chat solution, earning the confidence of healthcare providers globally. This service caters to a broad range of clients, from large enterprises managing substantial healthcare and insurance records to forward-thinking startups that depend on our platform for telemedicine communications. Such adaptability underscores QuickBlox's capacity to fulfill diverse needs across various sectors, ensuring that users have access to reliable and effective communication tools. In a rapidly evolving digital landscape, QuickBlox stands out as a robust choice for those looking to innovate their messaging solutions.

Nexa|Voice is an innovative software development kit (SDK) that integrates sophisticated biometric speaker recognition algorithms with essential libraries, user interfaces, reference programs, and detailed documentation to streamline the implementation of voice biometrics for multifactor authentication on iOS and Android devices. This versatile system enables biometric template storage and matching to occur either on mobile devices or remotely on servers, providing users with enhanced flexibility in authentication processes. With its reliable and customizable Nexa|Voice APIs, users experience an intuitive interface, backed by technical support that has solidified Aware's reputation as a leading provider of high-quality biometric software solutions for over twenty-five years. This robust biometric speaker recognition system not only guarantees security but also offers convenience for multifactor authentication needs. Furthermore, the Knomi mobile biometric authentication framework features a collection of biometric SDKs that function seamlessly on mobile devices and servers, facilitating secure, password-free authentication through biometric verification directly from the user's device. Knomi also supports various biometric modalities, including facial recognition, which significantly broadens its adaptability and enhances user engagement, making it a comprehensive solution for modern authentication challenges. The combination of these advanced technologies positions both Nexa|Voice and Knomi as cutting-edge options in the rapidly evolving landscape of biometric security.