Read Your Phone Comfortably Every Time

Make text the perfect size for your eyes with one simple adjustment. Big Font gives you complete control over text size across your entire phone – completely free.

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Everything You Need for Comfortable Reading

Always Free, Never Pay

Unlike other apps, Big Font is completely free with no hidden charges. Adjust your font size as many times as you want without ever reaching for your wallet.

Works Everywhere on Your Phone

Change your text size once and see it update across all your apps – messages, contacts, browser, and more. No need to adjust settings in each individual app.

Find Your Perfect Size

Choose from a wide range of text sizes, from very small to extra large. Customize your display exactly the way you need it for the most comfortable reading experience.

Use in Your Language

Big Font speaks your language with support for English, Spanish, French, German, Vietnamese, and many more. Navigate the app easily in the language you know best.

About Big Font - Change Text Size

Big Font - Change Text Size is an application that helps users adjust the font size on Android devices easily and quickly. This application is especially useful for the elderly, people with vision problems or anyone who wants to personalize their phone interface to read content more comfortably.

The application provides many useful features such as changing font size, supporting multiple languages and integrating night mode to improve user experience.

Key features

Flexible font size change
The application allows you to customize the text size on the entire Android device system with just a few simple steps.

You can choose the font size from very small to extremely large to suit your personal needs.

The content displayed in messages, contacts, browsers, and other applications will be adjusted to the size you choose.
Multi-language support
The application supports many different languages, making it easy for users from many countries to use.

Popular languages such as: English, Vietnamese, Spanish, French, German... are all built-in.

Intuitive interface combined with native language helps users feel more familiar and comfortable when using.