What is 18 instagram app?

As an AI language model, I do not have access to the most recent updates and features of Instagram app. However, here are some general information about Instagram, which is one of the most popular social media apps:

• Instagram was launched in 2010 as a photo-sharing app, but it has since expanded its features to include video sharing, stories, reels, IGTV, and shopping.
• Instagram has more than 1 billion monthly active users worldwide, and it is owned by Facebook.
• The app allows users to share photos and videos, follow other users, like and comment on posts, and send direct messages.
• Instagram offers a variety of filters, editing tools, and features to enhance photos and videos before posting.
• The explore page on Instagram is curated based on user behavior and interests, and it showcases content from popular and trending accounts as well as posts related to the user's interests.
• Instagram is a popular platform for influencers and businesses to reach their target audiences and promote their products or services.
• In recent years, Instagram has faced criticism for its impact on mental health, as well as concerns over privacy and harmful content.
• The app has introduced features such as "mute" and "restrict" to allow users to manage their interactions, and it has also implemented policies to address misinformation and harmful content.