For home improvement projects
TapMeasure uses Apple’s augmented-reality platform to let you quickly measure spaces and furnishings with your phone camera and a few taps. The iOS app can also create models of rooms that you can explore in 3-D.
Paint Tester shows you how your walls would look in a new hue. Just point your phone camera at the wall and choose a color. If you have a physical color sample, tape it up, and the app will expand the color to the rest of the wall.
Smart Tools is a $3 Android app packed with capabilities. It can measure lengths and angles and calculate distances and areas, and it also includes a flashlight, magnifier, compass, sound meter, and metal detector.
DIY on a Budget is an Android-only social networking app whose members share advice on tackling home projects. You can ask questions, read tips, and browse galleries of others’ work for inspiration.