Citizen lets you see if there are emergencies or crimes nearby.
Moment helps you track screen time. Apple has built-in tools, but a lot of people in the tech world use this app.
Mindbody lets you book and search workout classes on the go.
Duolingo helps you learn a new language.
next slide will load in 15 secondsSkip AdSkip AdGoogle Translate ensures you'll be able to communicate, even if you fall behind in your Duolingo lessons.
Libby lets you rent books from your local library.
Google Duo is a cross-platform video-chat app if your friends or family don't have Apple devices with FaceTime.
I Love Hue is a colorful, soothing puzzle game.
Co-Star supplies personal horoscopes, if you're into that kind of thing.
next slide will load in 15 secondsSkip AdSkip AdThere are many different podcast apps, including one that comes with the iPhone, but some staffers swear by Pocket Casts ...
... but others swear by Overcast, which is available only for the iPhone.
Comixology by Amazon lets you read comics on your smartphone.
Microsoft Outlook is an iPhone email app with some die-hard supporters.
Google Keep helps you put what's in your brain down in writing.
next slide will load in 15 secondsSkip AdSkip AdCitymapper offers high-quality subway and bus directions.
MyFitnessPal can help you count calories and offers a big community interested in food and nutrition.
Weather Underground is a great weather app that has actually helped one of our writers figure out how long she should wait under a tree when she was caught out in a rainstorm, thanks to its radar feature.
PlateJoy tailors recipes to your needs or preferences and helps you save money by smartly using pantry items and fresh foods.
MTB Project is the best app for finding your way around trails for hiking or biking.
next slide will load in 15 secondsSkip AdSkip Ad"Hearthstone" is a free game with a ton of depth to it. It's easy to play but tough to master, which will likely keep you coming back for more.
Alto's Adventure is a beautiful snowboarding game that's fun to play on the subway or bus.
Pocket City is the best city simulator ever made for phones. There are no microtransactions.
Trunk Club is a stylist that sends higher-quality clothes than other monthly clubs. Some of the clothes are a bit pricey for what they are, but others are surprisingly affordable.
Marco Polo is a fun video-chat app that's easier to use than Snapchat.
next slide will load in 15 secondsSkip AdSkip AdScanner Pro is a great scanner app for iPhones.
Holedown is a good casual brick-breaker game.
Shazam, now owned by Apple, can tell you who sings the song you're hearing.
Google Photos gives you unlimited cloud storage space for your photos.
It's free from the App Store.
Foursquare is great for finding restaurants.
Foursquare is free from the App Store.
next slide will load in 15 secondsSkip AdSkip AdCash App makes it easy to send money to other people's phones.
Cash App is free from iTunes.
Dark Sky is a cult-favorite weather app.
1Password can manage all your passwords, making it less likely you get hacked.
Pocket is a great way to bookmark articles to read later.
Pocket is free but a premium subscription costs $44.99 per year.
A previous version of this article was published in October.