There are mostly three ways to read articles coming from the web on the iPad nowadays: with an RSS reader; with social aggregators like Flipboard or News.me; with Instapaper or Read It Later. While aggregators and read later services are actually ways to plug into a social stream or a website, respectively, to fetch content to consume on an iPad, RSS is the most direct way to interact with a website: you log in with your Google Reader credentials, and you get the most recent feeds from your saved sources in chronological order. There are several great RSS apps for iOS out there, but the biggest problem of RSS is that articles lose their original “feel” – the way they look on a website as the author intended. Percolater, a $4.99 news reader for the iPad, wants to be an alternative that’s entirely based on the opposite concept: getting articles the way they would look in a web browser.

As the developers write in the app’s iTunes page, Percolater gives you the Internet “unprocessed” and “unfiltered.” Articles aren’t fetched in the form of textual excerpts or brief summaries with accompanying images: rather, the app loads a thumbnail preview for each article of your favorite sources, and allows you to swipe through these visual previews as if you were scrolling through the pages of a magazine – only the magazine is made of pages that look exactly the way they’re rendered in a web browser. Indeed, everything’s unfiltered. Including images, video, and ads.

Percolater can get content from your Twitter and Google Reader accounts. On the top section of the main page (which has a wooden background), the app also displays “popular” content it found on the web on a specific day, but I’m not sure how this section works. Maybe it gets the most popular articles from your Twitter account, or maybe it just runs a Google News search. You can import all your sources from Google Reader (and edit them later in the Settings), but you can’t add specific Twitter streams like users, favorite tweets, or lists. I wish Twitter integration went to a deeper level – as it stands now, Percolater only gets links from your timeline and renders them as browser previews in-app. So what happens when you tap on a thumbnail? You’re brought to another view that displays these “images” of articles stacked on top of each other, and you navigate between them with a vertical swipe. Alternatively, you can go back to the main screen with a horizontal swipe. The original tweet is displayed below the preview, and the quality of images is generally acceptable – obviously they’re not saved in super high-resolution, but it’s enough to get a glimpse of an article without reading it. If you do want to have a broader view of a post, however, you can tap on the preview to see the full-sized image Percolater saved. Tap the browser icon and, boom, Percolater loads the original link in a real browser window – meaning it will let you select text and do all the stuff a regular browser allows you to do. You can also share articles on Twitter or send them to Instapaper.

Percolater isn’t a product for everyone and it’s not perfect either. The app could use some speed optimizations and more Twitter functionalities, as well as a few fixes to reduce crashes on heavy load when the app is refreshing multiple sources at once. Still, Percolater is an interesting app in the way it puts the focus on the real web you see with a web browser. The app is available here at $4.99, and I’m looking forward to future updates. Read more

When I originally reviewed Sleipnir, an alternative browser for the iPhone, back in December, I was impressed by how the app managed to innovate in a market – the one of alternatives to Apple’s MobileSafari – that was saturated and full of apps that were just trying to offer the same set of functionalities over and over again – that is, tabs and Dropbox integration and, overall, some UI schemes that were aimed at porting the classic browsing desktop experience to the iPhone. Like Portal, Sleipnir was one of the very few apps that truly wanted to innovate on the platform. Rather than just copying the desktop and trying to squeeze a Mac-like experience into the iPhone’s screen, Sleipnir provided a series of features like touch-based tab management, tab groups and fullscreen mode that showed everyone how it was indeed possible to innovate with a mobile browser. And now Sleipnir wants to do the same on the iPad.

Released last night in the App Store, Sleipnir for iPad looks a lot like the iPhone version but it makes much greater use of multitouch gestures and tabs to offer a unique browsing experience like no other on the tablet. Instead of placing tabs as “panels” under the top app toolbar, Sleipnir for iPad follows the path traced by its iPhone counterpart and visualizes open pages as thumbnail previews at the bottom. The larger screen of the iPad allowed developers to further play around with this concept and implement a larger bar that shows more open websites at once. The refined cache management in version 1.2 also makes it possible to keep more pages open at once without losing your scrolling position and being forced to reload a page – although I’ve noticed after a dozens of tabs running in the background Sleipnir will refresh a page anyway. However, it works as well as Safari on the iPad 2, if not better: I rarely stumbled upon the page reload issue, and when I did Sleipnir refreshed the page in a way that my exact position was maintained. But there’s more: this new version introduces “TouchPaging”, a new feature that allows you to navigate between tabs with a horizontal swipe (think of the iOS 4.3 multitasking gestures, or the “back” animation in Lion’s Safari) and close a single tab by tracing a “L” on screen. I love these gestures, as they make browsing on the iPad so much natural it’s incredible to think Apple didn’t come out with a similar idea on Safari.

Just like on the iPhone, tabs can be organized in “groups” with drag&drop support, and you can close a tab with a vertical swipe on its preview. You can also drag a tab to the trash, and move as many tabs as you want inside a group. Again, the iPad’s bigger screen allows for a more convenient tab management that truly shines on Sleipnir for iPad. Last, bookmark sync: I still don’t like how Sleipnir handles the creation of bookmarks and the assignment of labels, but with a free Sleipnir Pass account the app lets you keep bookmarks in sync across the iPad and iPhone. The lack of bookmark importing features is annoying, but OTA sync across devices is just great.

Sleipnir is available for free on the App Store, and it’s one of the most innovative browsers ever released on iOS. Give it a try. Read more