As of my last knowledge update in January 2022, several messaging apps are popular in India. The popularity of these apps may change over time, so it's a good idea to check for the latest trends and updates. As of my last update, some of the widely used chatting apps in India include:

WhatsApp: WhatsApp is one of the most popular messaging apps globally, and it is extensively used in India. It offers end-to-end encryption, voice and video calling, and the ability to share multimedia content.

Telegram: Telegram has gained popularity for its focus on privacy and security. It allows users to create large groups, channels, and offers features like secret chats with end-to-end encryption.

Signal: Signal is known for its emphasis on privacy and security. It provides end-to-end encryption for messages, calls, and media sharing. Signal gained attention for its commitment to user privacy.

Facebook Messenger: While Facebook is widely used for social networking, its Messenger app is a popular choice for messaging, voice, and video calls. Integration with Facebook makes it convenient for users with an existing Facebook account.

Hike Sticker Chat: Hike Sticker Chat was known for its extensive collection of stickers and localized features. It aimed to provide a more expressive and fun chat experience.

Snapchat: While Snapchat is more known for multimedia messaging, it has gained popularity among younger users for its unique features like disappearing messages and stories.

Remember that the popularity of messaging apps can change, and new apps may emerge. Additionally, user preferences vary, so the "best" app depends on your specific needs and those of your contacts. Always consider factors like privacy features, security, user interface, and the features that matter most to you when choosing a chatting app.