You may have the latest and greatest iPhone XS Max, but what good is it without awesome iOS apps? Not much good at all. Even if you don't have Apple's new top-of-the-line device, a major reason for owning an iPhone is the wealth of apps available for the platform. The question is, which ones should you install? We've got you covered. The experts here at PCMag have tested a vast number of apps, sorting the good from the bad, to come up with this massive list of the 100 best iPhone apps.

Unlike other video creator software, the Japanese video editing Mac app isn’t restricted by a time line. All users need to do is to press record and edit the movie in real-time. Disk Doctor, the number one-selling program in the Mac App Store, is proof positive of that, and an excellent utility for cleaning up your hard drive to make things run smoothly again. 30 free macOS apps every Mac user should have. The app can convert video from just about any source into something your Mac, iPhone, or Apple TV can read, distilling complicated processes into.

If 100 apps are too many for your attention span, check out our much shorter and sweeter 12 must-have iPhone apps. There you'll find essential and well-known apps.

The apps included here will run just fine on the past few generations of iPhones, large or small. However, if you have an iPhone X or later, some apps let you do new, different things. The newer models include better cameras, Face ID, and more-powerful AR capabilities, which can make a difference for some apps. Inside the new phones' guts, the newer processors also make many activities feel much zippier.

Our favorite apps cover a range of activities, including photo editing, social networking, messaging, getting organized, and staying healthy. There's even one that helps you fill your gas tank cheaply. We've broken this list into 12 relevant categories, so you can browse just the app types that most interest you. Each app name is linked to its page on the App Store; if we have a review of the app, that's linked in the description text.

In the past, this list also featured the coolest video games the App Store had to offer. The iPhone gaming scene has become so robust that we decided it deserved its own separate, expanded list: Check out our feature covering the 50 Best iPhone Games. The selection is sure to be beefed up even further with the upcoming Apple Arcade streaming game service.

Be sure to revisit this page from time to time. Cool new apps arrive on the App Store all the time, so we update this list when we make new discoveries. Have you become enthralled with an app we failed to mention? We'd love to hear about it. Leave a comment and we might add your suggestion during our next update. We didn't forget Android users either; we have a separate roundup of the 100 best Android apps as well.

Best iPhone Communication Apps

Facebook Messenger

Free

Whatever your take on the social network of record, its messaging app is without equal. You don't need a phone number to use Facebook Messenger, you can use it on any device without the need for your phone to be present as it must with WhatsApp. It works on every platform, unlike iMessage. It also has many cool features, like audio calling and video chatting with AR masks, stickers, and even mobile payments. You can even play games through it with your contacts. Oh, and all of that's free.

Gmail

Free

Google's email app is a wonderful communication tool. Like our other Editors' Choice, Microsoft Outlook, it now lets you read mail accounts from Hotmail, Yahoo, and others via IMAP. It doesn't integrate your calendar the way Outlook for iPhone does, but Gmail does make your entire email database easier to deal with than the preinstalled Apple Mail app. It's smooth and fast, and even gives you five seconds to undo sending.

Kik

Free

Many messaging apps require you to give up your phone number to those who you chat with, but Kik only requires a username. And with a bot store already boasting more than 6,000 bots, Kik beat Facebook Messenger and Skype to the punch in the field of artificial conversationalists. Group chat, photo and video sharing, and gaming add to this youth-focused app's appeal.

Microsoft Outlook

Free

Microsoft Outlook's light and flexible mobile email app supports nearly every email account you might have, includes an integrated calendar, and provides a Focused inbox that shows you only important messages. Frequently updated, the app includes an ancillary Apple Watch app and supports 3D Touch. Unlike the rest of Office Mobile, the Outlook iPhone app is totally free.

Skype

Free
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Skype is one of the best free communication tools for the iPhone. The app lets you make video calls and supports rich texting with animated emojis. A good selection of bots gets you info you can use as well as entertainment. As with other versions of Skype, you can call or chat with other Skype users at no charge, or buy credit to call any other phone number, landline, or mobile.

Snapchat

Free

Sexting and security worries aside, the visual chat app Snapchat can be a lot of fun to use—if you can figure out its very nonstandard interface. Snapchat should not be used as a private and secure messaging app. Rather, it's a simple app that you can use to swap funny, ephemeral visuals with your friends. Messages sent through Snapchat disappear from the receiver's phone after a short time. Snap a picture, draw or write on top of it if you like, choose the amount of time the recipient can see it, and send away. Just bear in mind that all digital media is reproducible.

Spark Email

Free

Spark sports a slick interface and organizes your email into logical categories like Personal, Newsletters, and Notifications, though you can switch to a more standard full inbox view if you like. It handles multiple accounts, but doesn't combine categories for them as Outlook does. The app is very configurable, with customizable swipe actions It also lets you pin improtant stuff and snooze emails to deal with later.

Viber

Free

The ability to seamlessly transfer calls from mobile to desktop and vice versa was an early differentiator for Viber, which lets you exchange sticker-emblazoned texts as well as make calls and engage in video chats and calls to standard phones for free. And though it requires your phone number, it does encrypt communications.

Best iPhone Education & Reference Apps

ASL App

Free

The ASL App is a free iPhone and iPad app specifically made for learning the basics of American Sign Language, and it's a welcome introduction. It uses videos to teach you the alphabet, various useful words and phrases, and the required gestures. The free version covers the basics, and in-app purchases add advanced material in 99-cent packs. $9.99 gets you everything the app offers.

Bing

Free

People often forget that there's more than one way to find webpages, directions, videos, and photos on the Internet. There are actually plenty of good reasons to try out alternatives to market leader Google, and the Bing app for the iPhone shows several of them. Bing has a design that's gorgeous, clear, and simple to use. Feature-wise, Bing's app can keep up, and adds voice and camera input along with local info. What's more, the Bing app's home screen offers local guidance and news suggestions, rath

iPhone App Categories:

Best iPhone Communication Apps

Facebook Messenger

Gmail

Kik

Microsoft Outlook

Skype

Snapchat

Spark Email

Viber

Best iPhone Education & Reference Apps

ASL App

Bing

Cool Video App For Mac