Hi is a free communication app for iPhone that allows users to make free WiFi calls and video calls with their friends. In addition to voice and video calls, users can also send text, voice, image, and video messages. With Hi, users can save time and money by switching from traditional phone calls to free WiFi calls.

One of the key features of Hi is that it is completely free with no hidden costs or subscription fees. Users can enjoy unlimited WiFi calls and video calls without any limitations or time restrictions. The app also allows for unlimited international voice and video calls with crystal clear audio quality.

Privacy is a top priority for Hi, as the app is completely ad-free and privacy protected. It is financed by its sister game company, ensuring that users can communicate with their friends and family without any privacy concerns. Hi can be used with data, including 4G/3G/EDGE, without any additional charges, although carrier data charges may apply.

Hi offers 720P HD video calls, allowing users to connect with their loved ones in high-definition quality. Users can also switch from voice calls to HD video calls seamlessly. Another standout feature of Hi is its world's first 10,000 GB free video cloud storage, powered by Thunderclap Technology. This ensures that users never run out of space on their phones and can easily sync and share photos and videos on Hi.

Other features of Hi include instant photo and video sharing, message storage even when the phone is shut off or without network, advanced privacy settings, group chats, voice messages, free animated stickers, multi-login, web chat, and the ability to exchange contacts.

To provide feedback and help improve the app, users can contact the developer at