Have you ever needed a bubble level to make sure you’re hanging a picture straight? There’s an app for that. But you don’t really need the app because now a simple Google search on your iPhone or Android will turn your smartphone into a leveler.
Just google bubble level and you’ll see it in the search results. (Right below an ad for an app bubble level, probably.)
Using your smartphone’s accelerometer, the Google bubble level tool works just like the one you have in your office toolbox — just more fun and, well, you’ve forgotten where the toolbox is. Here’s GIF showing how it works from Barry Schwartz, news editor of Search Engine Land.