tweetvaultHQ liberates your Twitter data. We save your tweets and favourites and present them in an easily searchable archive, making it a snap to find that link you posted months ago. Best of all, tweetvaultHQ gives you loads of stats on your tweeting activity, with more being added all the time (everyone loves stats, right?). Because we're all about giving you better access to your own data, you can also export your tweet history and favourites in a variety of formats, including Twitter-like JSON.

tweetvaultHQ is a subscription service but you can use it in trial mode for free. In trial mode, we'll fetch up to 100 tweets and 25 favourites, to give you a taste of what the app can do. But we hope you'll subscribe — the full functionality of the app can be unlocked for just £1/month (or $1.60/month or €1.10/month, if you prefer). If you're lucky, you might be able to find a promocode to get some free subscription time!

Your tweets and favourites are displayed in the main "list view". This view mimics Twitter itself, displaying the text of each tweet with meta-data below. On the right of each item, you can click the icon to remove the tweet from the archive (and optionally from Twitter too) and the icon to view the original tweet on Twitter.

If a tweet is an @-reply to another user's tweet, it will be displayed with an "in reply to …" link beneath, just like on Twitter. Here, however, you can click this link to load the other user's original tweet neatly below yours. You can also Shift+click to load the entire conversation.

One of the most useful features of the app is search. You can use the search box on the top left of the list view to search your tweets or favourites. In the case of favourites, the usernames of the users associated with each favourite are searched as well. Searching is fairly basic at the moment, but improvements are in the pipeline. One handy feature of the search results view is the "View in context" icon () which allows you to view the tweet in context, back in the main timeline view — useful for working out what you were talking about!

The favourites view is just like the tweet view, except your Twitter favourites are listed rather than your tweets! The avatar and username of each favourite's author are shown, and the icon on the right can be used to remove the favourite from the archive (and unfavourite it on Twitter too, if you like).

The other headline feature is of course stats. From the stats tab you can see a variety of graphs and charts on your tweeting activity — hover over the icon by any chart for an explanation of what it shows. More stats are coming soon, and you'll soon be able to click on some of the charts to drill down into the tweets behind the numbers. Stay tuned!

Things to bear in mind: 1) Due to a limit imposed by Twitter, we can currently only retrieve your most recent 3200 tweets. If your timeline contains more than this limit, we unfortunately won't be able to retrieve your entire history. However once you've signed up we'll store the oldest tweets we can, and anything new will be retrieved continuously, so you'll always be able to navigate back to that oldest point. If Twitter lifts this limit in the future, we'll be right on it.

2) tweetvaultHQ doesn't currently retrieve native retweets. Non-native retweets (for example, those starting with "RT" that you've retweeted manually) will be safely stored along with the rest of your timeline. If enough people request the storing of native retweets, we'll look into it!

tweetvaultHQ is still in beta and new features are being added all the time. If you discover a bug, please contribute by reporting it. You should also bookmark our blog for details of new and upcoming features! And for that matter, follow us on Twitter. Cheers!