Google Opinion Rewards is appropriately named. Google sends you surveys that ask you about places you've visited recently and you get Google Play Store credit for your participation. Polls don't come in very often, but you can increase your chances of receiving more, by enabling your location and answering surveys quickly and honestly when they do arrive. It's not going to earn you a ton of store credit, but it's enough to purchase an app or an album every so often. To add some perspective, one of our editors has earned about $64 since installing the app in late 2013.
For all our technical savvy and disruptive startups, physical package delivery is still the backbone of ecommerce. The Slice app automatically detects shipping details from your email and then tracks the packages for you. You can watch your precious commodities make their stately way to your doorstep, get alerts when they are delivered, and even receive warnings if they've been recalled or the price has dropped. In short, Slice is an online shopper's best friend.

Tracking your period isn't just about knowing the cycle, but also the other factors surrounding it. Eve by Glow lets you track physical and emotional states, which can lead to some important insights when you take the time to interpret your own data. Eve also boasts a vibrant community and a wealth of information about sexual health built right in. Droid App


Who needs Uber when so many cities offer world-class public transit? The Transit app shows mass transit options—including buses, ferries, and trains—and the estimated time of arrival in 87 cities in North American, Europe, and Australia. Here in New York, it even tells you how many bikes are parked at local Citi Bike stands. This app keeps you in the know no matter where your travels take you.
Combined with Google Drive, this is an excellent choice for collaboration, especially given how feature-rich the mobile and web apps are. Once you create a document, you can add people to it, so that they can collaborate. Once they accept the invitation, you can create a multitude of documents — similar to what you can do with Microsoft Office — and have your team collaborate in real time. Droid Apps
This calorie counter and exercise tracker aims to help you lose weight the old-fashioned way—expending more calories than you take in. With its smart design and an extensive library of foods, it makes quickly logging the calories you take in and what you burn while exercising a snap. A barcode scanner makes it even easier to log that post-workout snack. This fitness app also plays nice with other such apps, so your data won't be tied up in just one place. MyFitnessPal won't give you a whole workout regimen, but it can make you more aware of your habits. PCMag has a full review of MyFitnessPal for the iPhone. Droid App
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