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Which Fleksy Software Development Kit should I start with

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The Predictive Keyboard SDK or Virtual Keyboard SDK?

In the realm of mobile and software development, keyboard functionality plays a pivotal role in enhancing user experience and facilitating seamless interactions. Two popular keyboard software development kits (SDKs) are the Predictive Keyboard SDK and the Virtual Keyboard SDK, both offered by Fleksy. This article delves into the differences between these SDKs, shedding light on their unique features and applications.

Predictive Keyboard SDK

The Predictive Keyboard SDK by Fleksy is designed to empower developers with a powerful text prediction engine that intelligently anticipates the user’s next words or phrases, resulting in faster and more accurate typing. The SDK integrates seamlessly into existing virtual keyboard applications such as CleverType, enabling users to enjoy the benefits of predictive typing in any text-based input field.

Key Features of the Predictive Keyboard SDK

1. Advanced Prediction Algorithms

The Predictive Keyboard SDK employs sophisticated algorithms to predict the user’s input based on context, language patterns, and personal preferences. This significantly reduces typing effort and enhances productivity.

2. Multilingual Support

Supporting multiple languages, the Predictive Keyboard SDK enables users to switch effortlessly between languages while maintaining accurate and contextually relevant predictions. It supports 82 languages at the time of this publication.

3. Autocorrection

Fleksy’s autocorrection engine is meticulously designed to provide users with unparalleled typing accuracy and reliability. Leveraging advanced algorithms and machine learning techniques, the engine analyzes the user’s input and intelligently predicts and corrects typing errors in real-time. This ensures that even when users make mistakes or encounter challenges, their intended words are accurately captured, saving time and effort in manual corrections.

4. Swipe Input

Available in 79 languages, Fleksy’s swipe input method is a proprietary technology that allows your virtual keyboard app to satisfy 40% more end-users worldwide.

Best suited for:

1. Existing Virtual Keyboard Applications

The Predictive Keyboard SDK is particularly beneficial in terms of creating a positive first impression from the end-user trying the virtual keyboard powered by Fleksy’s Predictive Keyboard SDK. It also dramatically improves the overall retention rate of any virtual keyboard application, thus creating a sustainable end-user growth, increase in Ad-Revenue / Subscriptions and boosting referrals.

Read our client’s testimonials for CleverType & New Cool Fonts Keyboard

2. Augmented Reality & XR

The Predictive Keyboard SDK enhances any OS text entry interface with 82 languages, reliable autocorrection, swipe input, predictions, emoji suggestions and more. It is compatible with Unity.

Virtual Keyboard SDK

The Virtual Keyboard SDK from Fleksy brings a unique set of features and functionalities that cater to specific user needs, such as accessibility and customization. It allows developers to create virtual keyboards tailored to diverse user requirements, offering a wide range of input options beyond the traditional QWERTY layout, UI components and more.

Key Features of the Virtual Keyboard SDK

Custom Layouts

The Virtual Keyboard SDK provides developers the flexibility to design and customize the keyboard layout according to their specific application requirements. This includes defining key size, position, and arrangement.

Gestures and Extensions

The SDK supports various gestures, allowing users to perform actions such as swipe typing, gesture-based navigation, and quick access to additional functionalities through extensions.

Autocorrection, Predictions and Swipe

The Virtual Keyboard SDK comes with our state-of-the-art Smart Text Engine which supports 82 languages, swipe input, autocorrection, predictions and much more.

Accessibility Features

Fleksy’s Virtual Keyboard SDK prioritizes accessibility, offering features such as larger keys, high contrast themes, haptic feedback, and optimized keyboard layouts for users with disabilities.

Best suited for:

1. Generative AI

Leverage the power of Generative AI to create a virtual keyboard app that offers advanced features, providing a unique and engaging experience for your users. Alternatively, utilize this cutting-edge technology as the primary Data Capture Interface for your LLM (Large Language Model) application, enabling seamless and accurate data input for your users. By incorporating Generative AI into a virtual keyboard app, you can enhance user satisfaction, attract more users, and stay ahead of the competition in the digital market.

2. Healthcare

Gain a competitive edge as an app developer or digital healthcare company by harnessing the power of precise typing biomarker collection and stress level tracking during typing. With these advanced features, you can provide valuable insights into users’ well-being and mental health, paving the way for personalized interventions and improved digital healthcare experiences.

Moreover, offer a secure virtual keyboard specifically designed for specialized Personal Digital Assistants (PDAs), ensuring the highest level of data privacy and protection. By incorporating these additional features, you can enhance user engagement, establish trust, and position your app or digital healthcare solution as a leader in the industry.

3. Virtual Keyboard Apps

This enables you to seamlessly distribute your services, APIs, contents, and other offerings to a vast user base. As users interact with the virtual keyboard, they are exposed to your offerings, creating valuable opportunities for engagement and monetization. This integrated approach allows you to reach users during the natural course of their typing activities, maximizing visibility and user interaction.

Additionally, leveraging a virtual keyboard app empowers you to collect valuable data on user typing behavior, preferences, and trends. This data can be harnessed to gain deeper insights into user needs, enhance personalization, and optimize your offerings. By understanding user behavior through their typing patterns, you can refine your strategies and deliver more tailored and relevant experiences.

Furthermore, integrating services, APIs, and contents into a virtual keyboard app allows for seamless access and usage. Users can conveniently access and utilize various functionalities, resources, and information, enriching their typing experience while promoting user satisfaction and retention.

Overall, building or enhancing a virtual keyboard app offers app developers, app agencies, software agencies, and digital companies an innovative and effective way to distribute their offerings, gather valuable user data, and provide enhanced experiences, ultimately driving growth, user engagement, and business success.


While both the Predictive Keyboard SDK and the Virtual Keyboard SDK are offered by Fleksy and enhance user interactions with mobile applications, they address distinct aspects of the user typing experience. The Predictive Keyboard SDK focuses on predictive text input, streamlining typing by providing accurate suggestions based on context and personal preferences. On the other hand, the Virtual Keyboard SDK empowers developers to create highly customizable keyboards, accommodating diverse user needs and accessibility requirements. By understanding the differences between these SDKs, developers can choose the appropriate tool to enhance the typing experience in their applications, based on the specific goals and preferences of their target users.

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