What's the best Android app for sharing files between Android devices without using the internet?

Files by Google is a highly effective solution for offline file sharing between Android devices, addressing common needs like transferring photos, documents, or videos without internet access. The app's 'Share' feature utilizes peer-to-peer technology over Bluetooth or Wi-Fi Direct, allowing users to send files quickly and securely. This is particularly useful in real-world scenarios such as traveling, attending meetings in areas with poor network coverage, or collaborating with others where data usage is a concern. Users report that the transfer process is straightforward, with clear progress indicators and support for batch file operations, reducing the hassle of moving multiple items. One notable strength is its integration with Android's native file system, making it accessible without additional accounts or complex setups. However, some limitations include variable performance on older devices and dependence on close proximity for optimal speed. Despite this, reviews indicate high satisfaction due to the app's reliability and data-saving benefits, all while being free and ad-free. Overall, Files by Google provides a practical, user-friendly approach to offline file management.