Until now, the best way to install Siri on iOS devices other than iPhone 4S has been Spire, a jailbreak tweak released in December last year that requires users to connect to a proxy server to let Siri respond to users' commands.

Thanks to a Vietnamese Dev team, the users now can install an apparently much more advanced alternative to Siri, called Sara, in all iOS devices.

Meet Sara, The Latest Siri Alternative That Works on All iDevices. Photo: isoftjsc.com

According to App Advice, the app offers a number of features and overcomes several limitations that Siri has. For instance, it works in a variety of countries apart from the U.S. and Canada. In addition, the app is available in over 37 languages.

Sara can also reportedly control PC, switch phone toggles on and off, search for songs and scan barcodes. It can even learn from its mistakes and does not need any proxies to get the tweak up and running.

To use the app, users need to add http://isoftjsc.com to the Cydia source list and download the version specific to their device.

According to ModMyi, Sara has open brain, meaning anyone can train her, teach her new knowledge. Sara also has a built-in plugin system, so any user can write plug-in for Sara.

Here are some features Sara brings along:

- Find local business & direction (everywhere, not only U.S. and Canada) - Search for song from - Call, message - View the movie schedule from nearest cinema - Read newspaper (via RSS) - Check mail - Remote control PC - Search videos from YouTube, search Google, Wikipedia - Toggle on/off system functional (WiFi, bluetooth, 3G, ..) - Translate, support > 37 languages - Read barcode - OCR feature (Image to text), you can use Sara instead of scanner - Social network support, user can take a photo then send to their Facebook, Twitter - Search product price, local business - Open apps