Whatool is a free iPhone app developed by Luca Rubin. It falls under the category of Social & Communication and specifically focuses on social networking. This app allows users to carry out advanced searches within their WhatsApp Messenger, Line, and Viber chats.

With Whatool, users can search their chats by date, sender, and message content, making it easier to find specific information within their conversations. The importation process is designed to be simple and secure, with chat data processing taking place directly within the user's device to avoid sending sensitive information to external servers.

One notable feature of Whatool is the "MERGE" mode, which allows users to merge multiple conversations into one combined display. This makes it convenient to search and view the message history as if it were one single conversation.

In addition to advanced search capabilities, importing chats to Whatool serves as a backup copy of messages, reducing the risk of losing important information and memories.

Overall, Whatool is a useful tool for iPhone users who want to easily search and manage their WhatsApp Messenger, Line, and Viber chats. Give it a try today, as it is completely free to use!