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Sudoku on its own is a very complex game. All but the most mathematically inclined put extensive mental energy forward to complete even moderate Sudoku puzzles. So the very concept of changing the game to use something other than numbers is enough to cross the eyes. But Deca Color Sudoku manages to do it right, presenting an engaging, mind-bending variation on the classic puzzler that works well.

The idea is very simple. Instead of nine numbers, Deca Color Sudoku uses nine colors. The same rules as traditional number-based Sudoku apply: match up the colors across all 18 rows and columns … Read more

BeamReader PDF Viewer is a free Android app that opens, displays, and saves PDF files and email attachments. It's compact and has most of the features you expect from a PDF reader, such as zoom, pinch-to-zoom, text wrap, bookmarks, and password protection. It's suitable for Android 2+ devices, but it doesn't seem to support Android 4 releases, and the developer seems to have stopped updating it. With excellent PDF utilities available from Adobe and others, and at the same price as BeamReader (free, as in no money) it's hard to see how it finds a place … Read more

There is something about a business card. That small piece of cardstock is the foundation of millions of networking success stories every year, making it a vital tool for anyone who frequently goes to networking events, business lunches, or conferences. Yet, increasingly contact lists and communication tools are online only, so the traditional business card holder isn't an option to organize all that useful information. This is why apps like WorldCard Link are becoming increasingly popular, providing a quick and easy way to digitize business cards and share contact information.

WorldCard Link is an ingenious blend of technology both … Read more

Need to talk with a friend but don't want to waste precious time on Facebook? This nifty app can alert you when they sign on. Facebook Online Notifications works well overall, but you may find it to be a drain on your battery.

In our tests, it seemed like the app was only able to tell if someone was online if they had their chat on. While most Facebook users leave it on by default, you'll still have some who have it turned off, so you could miss some of your circle when they get on the site. … Read more

Shair is the newest in a long line of iOS tools designed to streamline transfer of files among your iOS devices and computers or laptops. Unlike some others, however, Shair is attractive and works more or less on autopilot. There are clients available on multiple devices to make it as easy as possible to install and move files between versions of the app.

The first time you open Shair, you'll be greeted with a screen explaining exactly what the app does as it automatically starts searching for compatible devices. All you need to do is be on the same … Read more

When completing a wood or other project from stock materials, predetermining the layout for cuts helps save costs. Planner for Mac may appeal to a very specialized group of people who need computer assistance in planning a project's cuts, but the price and limited functions may make it a less desirable option.

Available as a free trial version limited to 10 uses, the full program requires a $10 payment. Planner for Mac installs quickly and setup is smooth outside of a dialog box explaining the trial limitations. The program is not supported and lacks instructions. The specialized program means … Read more

Slow Food is a good name for this iPad app, which tasks players with moving various pieces of food into a grid that forms Christmas icons like Santa Claus, reindeer, Christmas trees, and stockings. The game's interface calls to mind the same kind of cut-out style that filled '80s and '90s TV Christmas specials, and while the concept is certainly appealing, the execution often leads to frustration as you attempt to figure out exactly what it is you are supposed to be doing.

The idea of the game is simple -- choose a Christmas icon (additional puzzles featuring animals … Read more

This physics game gives you all the fun of a bumpy ride without any skull fractures and will definitely quench your thirst for off-road driving. Hill Climb Racing becomes a little boring if you get stuck at the same level, but loads of customization and upgrade options will keep you coming back.

The game's Super Nintendo-style graphics makes it run incredibly smooth and won't tax your phone's processor. You will hear some goofy laughs whenever you flip your car and crush the redneck behind the wheel, which you'll do often. Though it's funny when you … Read more

FIFA 11 is another installment in the ever-popular FIFA simulation. The app is available from several locations, including iTunes, and installs easily. FIFA 11 has high resolution graphics, which means there's a large file to download, but that's the only drawback.

FIFA 11 lets you control the action with movements of your iPhone or iPad. Tilting the device controls the direction of the players, which works well on these small devices with no keyboard or mouse. You can set up games with ease, choosing from over 500 teams in 35 reproduction stadiums. The graphics are amazing, and just … Read more