TweetStory is a free iPhone application developed by Silviu Marian Stoican. It falls under the category of Social & Communication, specifically social networking.

TweetStory allows users to revisit their past tweets by showing their Twitter account on the same day in past years. Whether it's a status, GIF, video, or a quote from their timeline, users can easily find and view any tweet from the past. Additionally, users can share or delete their past year tweets.

Even if users don't have many tweets of their own, they can still enjoy the app by viewing the past year tweets of other Twitter accounts, as long as the profiles are public.

The app is user-friendly and straightforward. Users need to connect their Twitter account, and the app will fetch all the tweets from their account that are from the current day and past years. Users can choose to keep these tweets to themselves or share them on Facebook, Twitter, or through email or messaging.

To ensure users never miss a day, TweetStory offers integrated notifications that can be set to match their free time.

Overall, TweetStory is a simple yet nostalgic app that allows users to relive their Twitter history. Just be prepared for unexpected emotions to arise, whether it's tears or smiles!